TMC2084-HT SMSC, TMC2084-HT Datasheet
TMC2084-HT
Specifications of TMC2084-HT
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TMC2084-HT Summary of contents
Page 1
... The part of port is definable as strobe outputs and/or external trigger inputs − The anti-chatter circuit on the input port can be set in ON/OFF − The sampling frequency of the anti-chatter circuit can be set (19.1Hz/1.22KHz) SMSC TMC2084 TMC2084 Standalone Mode TM CircLink Feature Rich Transmit Trigger: − ...
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... TMC2084-HT for 48 pin, TQFP Lead-Free RoHS Compliant Package 80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123 Copyright © 2008 SMSC or its subsidiaries. All rights reserved. Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information sufficient for construction purposes is not necessarily given ...
Page 3
... Configuration Using Shared Pins............................................................................................................16 2.2.2 Configuration Through the Network ........................................................................................................21 2.2.3 Returning Configuration Data .................................................................................................................29 2.3 Types of Packets............................................................................................................................... 30 2.3.1 Packets TMC2084 Can Receive.............................................................................................................30 2.3.2 Packets TMC2084 Can Transmit............................................................................................................31 2.4 Command Packets ............................................................................................................................ 32 2.4.1 Format of COMMAND Packets...............................................................................................................32 2.5 OUTPUT PORTs............................................................................................................................... 34 2.5.1 Format of OUTPUT DATA Packets ........................................................................................................35 2.5.2 Configuring I/O Port Directions ...
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... Width of Reset Signal .............................................................................................................................70 4.2 Output Current from Shared Pins...................................................................................................... 72 4.3 Values of Pull-Up and Pull-Down Resisters...................................................................................... 73 List of Figures Figure 1 - TMC2084 Block Diagram..........................................................................................................................7 Figure 2 - TMC2084 Pin Configuration....................................................................................................................12 Figure 3 - Network Configuration Example 1: S Single Host and 15 Nodes............................................................15 Figure 4 - Network Configuration Example 2: Dual Hosts and 6 Nodes ..................................................................15 Figure 5 - Functional Diagram Of FLAG OUTPUT ...
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... About TMC2084 The TMC2084 is CircLink’s standalone mode controller acting as an intelligent remote I/O controller that uses the enhanced token passing protocol. TMC2084 I/O nodes are controlled by the Host node (TMC2074/72) via the network. Thus, TMC2084 enables a single-processor with multi-remote I/O controllers environment at reasonable cost ...
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... converter, or input pins for external trigger. TMC2084 also has additional functions including the function to notify the host of its status, the states of its Output Ports and settings, the function to send packets with timestamp, and the function to synchronize the on-chip timer to the host ...
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... X2 X1 VDD VSS SMSC TMC2084 Enhanced Token Passing Protocol Microsequencer Receive Data S-P Buffer Transmit Data P-S MUX NID[3:0] PSSL nCMIBYP Figure 1 - TMC2084 Block Diagram Page 7 DATASHEET Command Register NST Time Stamp Configuration Register Flags Status Clear Signal PA[7:0] PB[7:0] General ...
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... PC1 - 7 IT/O42/OD4 General Purpose I/O port C bit bi-directional port. The direction of port and the type of output are configured using the same way as PC0. Page 8 DATASHEET TM Standalone Mode CircLink Controller Datasheet DETAILED DESCRIPTION SMSC TMC2084 ...
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... ID Configuration Bit 2) 33 Port D bit 3 (Node ID Configuration Bit 3) 34 Port D bit 4 FLAG OUTPUT bit0 (Page Size Selection) SMSC TMC2084 BUFFER PIN NAME TYPE BY FUNCTION General Purpose I/O Group D PD0 IT/O42 The bit 0 of Port D. A bi-directional port. The port direction can be specified using the shared pin PGS1. PGS1 = L specifies input ...
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... Transceiver Interface TXEN O42 Transmit enable output (active high) TXD O42 Transmit data output. (nCMIBYP) (IT) Specifies bypassing of CMI encoder/ decoder. For detailed information, see the section on Configuration Using Shared Pins. Page 10 DATASHEET TM Standalone Mode CircLink Controller Datasheet DETAILED DESCRIPTION SMSC TMC2084 ...
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... Input, TTL Level IT_PU Input, TTL Level with pull-up ICS Input, CMOS Level with Schmitt Trigger O42 Output OD4 Open-drain Output Oscillator Output SMSC TMC2084 BUFFER PIN NAME TYPE BY FUNCTION RXIN IT Receive data input. Test Pin nTMODE IT_PU Test mode. nSMODE This pin must be tied to Vdd ...
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... Pinout PD6 37 PD7 38 nTM nSM nRESET 41 Vdd TXEN 46 TXD 47 RXI Figure 2 - TMC2084 Pin Configuration Revision 0.2 (10-23-08) TM C2084 Page 12 DATASHEET TM Standalone Mode CircLink Controller Datasheet PC3 22 PC2 21 PC1 20 PC0 19 PB7 18 PB6 17 PB5 16 PB4 15 PB3 14 PB2 13 Vdd SMSC TMC2084 ...
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... CPU, which controls all communications to or from it. The device that can be used for the host node should be a TMC2072/74 that is configured to operate in Peripheral mode; the TMC2084 is dedicated for the use as an I/O node only (Standalone mode). The I/O nodes do not require the CPU and they are controlled indirectly via the network by the CPU through the host node ...
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... Transmission Rate Transmission Rate defines a common rate for all nodes. The transmission rate for TMC2072/74 is configured using either an internal register or an external pin; for TMC2084 configured by the value that is equal to one eighth of the input clock. TRANSMISSION ...
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... ID=1 TMC20070A/73 Transceiver Termination R Transceiver I/O -1 TMC20080 Group controlled by Host 1 *1 Because a token is still passed to node 6 even if nodes are off. Figure 4 - Network Configuration Example 2: Dual Hosts and 6 Nodes SMSC TMC2084 Transceiver Transceiver MAXID=15 MAXID=15 MAXID=15 ID=2 ID=3 ID=4 I C2084 ...
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... A common page size must be configured for all nodes including host nodes. The data size that TMC2084 can send to or receive from the host in all modes is only the 8 bytes that are taken from the page; 64 bytes or 128 bytes of data can be transmitted only between host nodes. ...
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... During these high-impedance periods, each input to port D is defined by the external pull-up (High) or pull-down (Low) resister. When port D is configured as FLAG OUTPUT, it starts driving right after the deassertion of the reset signal. SMSC TMC2084 O.D / Push-pull PD3 - 0 PC7 - 0 ...
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... Thus, a buffer is added to provide a delay time for the control signal of an external tri- state buffer. Revision 0.2 (10-23-08) PD7-0 Clock nRESET Inside of LSI Page 18 DATASHEET TM Standalone Mode CircLink Controller Datasheet Configuration by shared pins L H Output port Reset signal SMSC TMC2084 ...
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... TM Standalone Mode CircLink Controller Datasheet Only port D remains in Hi-Z while nRESET = L Register Reset generator Inside of LSI SMSC TMC2084 Configuration by shared pins L H PD7-0 Delay >5ns nRESET Reset signal Page 19 DATASHEET Configuration for initial data of Output Port L H Logic Gate Output port Output of logic gate: • ...
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... Thus, the buffer is added to provide a delay time for the control signal of the external tri-state buffer. Only port D remains in Hi-Z while . nRESET = L Register Reset generator Inside of LSI Revision 0.2 (10-23-08) Configuration by shared pins L H PD7-0 Delay >5ns nRESET Reset signal Page 20 DATASHEET TM Standalone Mode CircLink Controller Datasheet Input data SMSC TMC2084 ...
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... DATA2 3Ah/7Ah D LY DATA3 3Bh/7Bh NSTCOM ACHTFR DATA4 3Ch/7Ch D Q DATA5 3Dh/7Dh NSTPRE2 - 0 NST-L 3Eh/7Eh NST-H 3Fh/7Fh *Addresses in 64-byte mode/Addresses in 128-byte mode Note: SMSC TMC2084 Bit 5 Bit 4 Bit 3 Host node ID I/O node ID or 00h (broadcasted) * C.P = 38h/78h 0 BSTSEN PBOD PAOD D ACHTBY ...
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... Configures port D pins (PD7 - 0) as push-pull output (totem pole). 1: Configures port D pins (PD7 - 1) as open-drain outputs (default). Revision 0.2 (10-23-08) Bit 6 Bit 5 Bit 4 Bit 3 PCOD PBOD PAOD BSTSEN Page 22 DATASHEET TM Standalone Mode CircLink Datasheet Bit 2 Bit 1 Bit 0 CMIERR EMGYMD BRE D MD SMSC TMC2084 Controller ...
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... Asserts OUTPUT PORT strobe signal after initializing OUTPUT PORT and after receiving the OUTPUT DATA packet (default). 1: Asserts only after receiving the OUTPUT DATA packet. Initializing OUTPUT PORT means Initialization by both the INITIALIZE OUTPUT PORT command and the Note: assertion of MYRECON in emergency mode (EMGYMD = 1). SMSC TMC2084 Bit 6 Bit 5 Bit 4 Bit 3 ACHTBY ...
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... By the external trigger (with NST latch the external trigger (without NST latch Reserved (unused) 1 Reserved (unused) 0 Reserved (unused) 1 Reserved (unused) 0 Reserved (unused) 1 Reserved (unused) Receiving own token 0 Receiving the COMMAND packet 1 Page 24 DATASHEET TM Standalone Mode CircLink Controller Datasheet Bit 2 Bit 1 Bit 0 TXTRG3 - 0 SMSC TMC2084 ...
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... A single transmit trigger is generated each time the START TRANSMIT command is received regardless NOTE: of the configuration for the transmit trigger. Additionally, a single transmit trigger is generated at the time the INITIALIZE OUTPUT PORT command is received after receiving the START TRANSMIT command. SMSC TMC2084 Trigger input is inhibited during transmission process Completion of transmission ...
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... Revision 0.2 (10-23-08) FO3 (PD7) FO2 (PD6 nPOSTR nTXDONE 1 1 nRCNERR nNSTCOUT (Fixed to High Page 26 DATASHEET TM Standalone Mode CircLink Controller Datasheet FO1 (PD5) FO0 (PD4) nNSTCOUT nTXDONE NSTUNLOC nTKN2ME NSTUNLOC nNSTCOUT nTKN2ME NSTUNLOC NSTUNLOC nNSTCOUT nTKN2ME NSTUNLOC (Fixed to High) (Fixed to High) SMSC TMC2084 ...
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... MHz, and half when the input clock is 10 MHz. Configures the output mode of NST carry (NST carry is outputted via nNSTCOUT) NSTCOMD 0: Active low pulse output with the pulse Level Width resolution selected by the bits NSTPRE2 – Clock output with the duty ratio 50% (default) SMSC TMC2084 Bit 6 Bit 5 Bit 4 Bit 3 0 ...
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... Bit 5 Bit 4 Bit 3 0 (Maximum period = 104.9 ms) (Maximum period = 209.7 ms) (Maximum period = 419.4 ms) (Maximum period = 838.9 ms) (Maximum period = 1.68 s) (Maximum period = 3.35 s) (Maximum period = 6.71 s) (Maximum period = 13.42 s) Page 28 DATASHEET TM Standalone Mode CircLink Controller Datasheet Bit 2 Bit 1 Bit 0 CMID3 - 0 SMSC TMC2084 ...
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... NST-H 3Fh/7Fh * Addresses in 64-byte mode/Addresses in 128-byte mode *2 “000” or “PGS2-0” is selected using the RETURN SETTING command. PGS2-0 sets status of the I/O ports direction for the configuration using shared pins. SMSC TMC2084 Bit 6 Bit 5 Bit 4 Bit I/O node 00h (always broadcasted) C ...
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... Packets TMC2084 Can Receive TMC2084 can receive the three types of packets from the host node: the Initial Setting, Command and OUTPUT DATA packets. The packet is identified using the packet ID code included in the first data byte (DATA0 and any packet that has undefined code is discarded. ...
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... Packets TMC2084 Can Transmit TMC2084 can send two types of packets: the Return Setting and INPUT DATA packets. It sends the RETURN SETTING packet during the period from the deassertion of reset signal to receiving the START TRANSMIT command. After receiving the START TRANSMIT command it sends INPUT DATA packets. ...
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... Revision 0.2 (10-23-08) Bit 6 Bit 5 Bit 4 Bit host node ID of I/O node or 00h (broadcasted) C.P = 38h/78h 0 0 00h CMD7 - 0 00h CMD7 - 0 (repeat the same data twice) 00h NST7 - 0 NST15 - 8 Page 32 DATASHEET TM Standalone Mode CircLink Controller Datasheet Bit 2 Bit 1 Bit SMSC TMC2084 ...
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... If the transmit trigger is configured for the external trigger and: NOTE: If the external trigger input (either nPISTR1 low when TMC2084 comes out of reset, then both the input data and the NST are returned with zeroes set as their values. If the external trigger input is High, it returns the data taken from the INPUT PORTs and NST at the time the INITIAL SETTING packet is received ...
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... Dropping from the network causes high-impedance state for them (depending on the EMGYMD configured). Initializing OUTPUT PORTs to high-impedance is also possible using a command. In addition, the output port is initialized (high-impedance state) by the hardware reset and the software reset command. Revision 0.2 (10-23-08) Page 34 DATASHEET TM Standalone Mode CircLink Controller Datasheet SMSC TMC2084 ...
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... Clears NSTUNLOC flag MRCV 1: Clears MRCV flag TKNRETF 1: Clears TKNRETF flag RCPUM 1: Clears RCPUM flag POR 1: Clears POR flag MYRECON 1: Clears MYRECON flag OPICDONE 1: Clears OPICDONE flag SMSC TMC2084 Bit 6 Bit 5 Bit 4 Bit host node ID of I/O node or 00h (broadcasted) C.P = 38h/78h OPICDON ...
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... The delay time depends on the input clock MHz clock. The figure below shows timing relationships between the OUTPUT PORT and the output strobe flag, nPOSTR. Revision 0.2 (10-23-08) Page 36 DATASHEET TM Standalone Mode CircLink Controller Datasheet SMSC TMC2084 ...
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... Once the START TRANSMIT command is received, the transmission of the INPUT DATA packet commences depending on the transmit trigger mode configured through network using bits TXTRG3 - 0. For detailed information, see sections Through Network and 2.4 SMSC TMC2084 • MYRECON asserted (EMGYMD= (700 ns / 2.3 μs @ 2.5 Mbps) • ...
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... Addresses in 64-byte mode/Addresses in 128-byte mode Revision 0.2 (10-23-08) Bit 6 Bit 5 Bit 4 Bit I/O node 00h (always broadcasted) C.P = 38h/78h OPICDON NSTUNL MRCV TKNRETF RCPUM OC PA7 - 0 PB7 - 0 PC7 - 0 PD7 - 0 NST7 - 0 NST15 - 8 Page 38 DATASHEET TM Standalone Mode CircLink Controller Datasheet Bit 2 Bit 1 Bit 0 * PGS2 - 0 MYRECO POR N SMSC TMC2084 ...
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... For detail information on each status bit, see the section 2.8 Status Bits. NST15 - 0 (Time stamp) TMC2084 sends the INPUT DATA packet with time information (NST value) attached. When the transmit trigger is configured as the external trigger mode that uses NST latch, the NST value taken at the time the input data is latched is transmitted ...
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... Standalone Mode CircLink Datasheet FO3 (PD7) 3 FO2-0 (PD6 - 4) When PGS2=1, driving starts within 2 clock cycles after de-assertion of reset. FO1 (PD5) FO0 (PD4) nNSTCOUT nTXDONE NSTUNLOC nTKN2ME NSTUNLOC nNSTCOUT nTKN2ME NSTUNLOC NSTUNLOC nNSTCOUT nTKN2ME NSTUNLOC (Fixed to High) (Fixed to High) SMSC TMC2084 Controller ...
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... The output flags that indicates network error (active low). nRCNERR This is asserted in the event of dropping from network (MYRECON asserted), expiring idle timer or token retry and it is reset upon receiving own token. SMSC TMC2084 POSTRDLY= (11 to 14) POSTRDLY= (43 to 46) Tx: Input clock period ...
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... Status Bits TMC2084 has multiple status bits that indicate its various states and transmits them as a part of the INPUT DATA packet. Setting anyone of these statuses bits to "1" causes it to keep its value until it is cleared. Any status bit is cleared when the OUTPUT DATA packet in which its corresponding status bit is set to "1" is received ...
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... Although this flag has the same meaning as the NSTUNLOC bit of the FLAG OUTPUT, it acts differently: This status bit: Once It is set to ”1,” it remains in the ”1” state until it is cleared. FLAG OUTPUT: The Lock/Unlock sate is reflected to the output pin immediately. SMSC TMC2084 Page 43 DATASHEET Revision 0.2 (10-23-08) ...
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... Token retry was performed token retry was performed When a token did not arrive at the destination (own ID + 1), TMC2084 transmit it to the same destination one more time. This may happen when the next node does not exist or some reason like noise prevents token to arrive at the destination (own ID + 1). When non- consecutive node ID numbers are used, this always happen at the neighboring node of unused ID number ...
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... NST Time Stamps TMC2084 can handle packets with an attached time stamp. The time stamp is known as NST (Network Standard Time). Every node in the network has its own clock that is synchronized to the NST of the clock master node (CM node). Only one clock master node is allowed to exist in a network. ...
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... MUX Selects output digits Clock Pulse generator 4 NSTC3 - 0 NSTCOMD Selects output type Page 46 DATASHEET TM Standalone Mode CircLink Controller Datasheet 105 ms 210 ms 409 ms 839 ms 1,680 ms 3,360 ms 6,710 ms 13,420 ms Time stamp for transmit packet 2 to1 MUX 1 nNSTCOUT 0 SMSC TMC2084 ...
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... The carry output starts driving with High level when the devise comes out of reset. The condition for the pin to start driving the carry output depends on the configuration of bits CMID3 – shown in the table below: Bits CMID3 - 0 Own other node SMSC TMC2084 Output period of Carry Output Bits ...
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... CMI Coding TMC2084 supports CMI coding and RZ coding as the coding scheme for media interface. Features of CMI Coding: Low DC component This makes external circuitry to prevent the pulse transformer from magnetic saturation unnecessary when it is used for isolation in RS485, since in CMI coding the same bit is never repeated more than two consecutive times ...
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... Page ( I/O-2 30 03h 00h 38h 00 Page ( I/O 00h 38h 00 Page ( I/O DID 38h Page ( Host 20 30 SMSC TMC2084 DATA0 DATA1 DATA2 DATA0 DATA1 DATA2 DATA0 DATA1 DATA2 DATA0 DATA1 DATA2 DATA0 DATA1 DATA2 Page 49 DATASHEET DATA3 DATA4 DATA5 NST-L NST-H DATA3 ...
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... DATA0 DATA1 DATA2 DATA0 DATA1 DATA2 DATA0 DATA1 DATA2 DATA0 DATA1 DATA2 Page 50 DATASHEET TM Standalone Mode CircLink Controller Datasheet DATA3 DATA4 DATA5 NST-L NST-H DATA3 DATA4 DATA5 NST-L NST-H DATA3 DATA4 DATA5 NST-L NST-H DATA3 DATA4 DATA5 NST-L NST-H SMSC TMC2084 ...
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... Power ON packet packet I/O contents sent Figure 9 - Initialization Procedure Page 51 DATASHEET TMC2084 (I/O side) Release reset Joins network automatically after reading pins then waits for receiving Receives INITIAL SETTING packet and loads initial configuration data then waits for receiving Receives RETURN SETTING ...
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... Re-joins network then waits Receives INITIAL SETTING Completion of initial configuration Page 52 DATASHEET TM Standalone Mode CircLink Controller Datasheet TMC2084 (I/O Side) Receives SOFTWARE RESET command packet then: section via network back to default setting for receiving packet and loads initial configuration data then ...
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... Low Level Input Voltage V IL1 (TTL Level) High Level Input Voltage V IH2 (CMOS Level) Low Level Input Voltage V IL2 (CMOS Level) SMSC TMC2084 Symbol Rating Vdd –0.3 to +5.0 Vin –0.3 to Vdd +0.3 Vin –0.3 to +7.0 Vout –0.3 to Vdd +0.3 Iin ±10 ...
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... Vss ICS I = -1mA Vdd-0.5 OH O42 I = -2mA 0.8 X Vdd 1mA OL O42/OD4 I = 4mA OL (absolute O42 value) O42/OD4 f = 20MHz 40MHz X1 Page 54 DATASHEET TM Standalone Mode CircLink Controller Datasheet Min Typ Max Unit μA –10 10 –10 10 μA –200 10 μA – Vss + 0 SMSC TMC2084 ...
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... Figure 11 - Input Signal Measurement Points Buffer type 0.8 X Vdd , V IHA ICS : VI = 0.8 X Vdd , V IHA 2.2V 0.8V (excluding both nRESET and X1) IHA ILA SMSC TMC2084 = 0.2 X Vdd (X1) ILA = 0.2 X Vdd (nRESET) ILA Page 55 DATASHEET V IHA V ILA 2.2V 1.4V 0.8V Revision 0.2 (10-23-08) ...
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... Data ‘0’ t12 t11 t10 Data ‘0’ MAX Unit Comments ns Note 1 ns Note 1 ns Note 1 ns Note 1 ns Note 1 ns Note 1 ns Note 1 9Tdr / 8 ns Note 1 9Tdr / 8 ns Note 1 5Tdr / 8 ns Note 1 5Tdr / 8 ns Note 1 9Tdr / 8 ns Note SMSC TMC2084 ...
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... PC7-0, PD7-0 nPISTR1, nPISTR2 Symbol Parameter Setup Time Of Data t1 (Referenced to rising edge of nPISTR1 or nPISTR2) Hold Time Of Data t2 (Referenced to rising edge of nPISTR1 or nPISTR2) t3 Active Period Of nPISTR1 or nPISTR2 t4 Inactive Period Of nPISTR1 or nPISTR2 SMSC TMC2084 MIN TYP 7Tdr / 7Tdr / 4 3Trd / 3Tdr / 4 Tdr / 2 Tdr / 2 Tdr ...
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... Note 1: Tx represents the clock period that is applied to X1. ( @20 MHz) Note 2: This applies to the stable crystal oscillator after the power supply voltage exceeds Vdd (min). Note 3: Vdd (min) = 3.0 V for TMC2084. This specifies the read timing of shared pins. Note 4: Revision 0.2 (10-23-08) t2 ...
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... TM Standalone Mode CircLink Controller Datasheet 3.5 Package Outline SMSC TMC2084 ccc R1 0.25mm Page 59 DATASHEET www M Revision 0.2 (10-23-08) ...
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... DATASHEET TM Standalone Mode CircLink Controller Datasheet MIN TYP MAX - - 1.6 0.05 - 0.15 1.35 - 1.45 8.8 - 9.2 6.9 - 7.1 8.8 - 9.2 6.9 - 7.1 0.09 - 0.2 0.45 0.6 0.75 - 1.0 - 0.5 Basic 0° - 7° 0.17 0.22 0.27 -0.04 - 0.04 0. 0. 0.08 48 SMSC TMC2084 ...
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... TM Standalone Mode CircLink Controller Datasheet 3.6 Device Marking The character style may be slightly different from that of actual devices. NOTE eekl y_Code- Lot _Code1 48 1 SMSC TMC2084 25 TM C2084 Lot _Code2 e2 12 Page 61 DATASHEET 24 13 Revision 0.2 (10-23-08) ...
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... Revision 0.2 (10-23-08) Internal clock Inside of LSI Reference Values (For fundamental tone MHz Symbol R out Rout Cout MHz C out Symbol Rout Cout Page 62 DATASHEET TM Standalone Mode CircLink Controller Datasheet Reference Value Rfb 51 Kohm 51 Ohm Cin Reference Value Rfb 51 Kohm 51 Ohm Cin SMSC TMC2084 ...
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... Standalone Mode CircLink Controller Datasheet 3.8 Basic Device Connections Power supply voltage for offset resistors must be unified at all nodes in a network. n CMIB YP H RS-485 transceiver Lin Lin e_ R Rcv RE + SMSC TMC2084 PD7 PD6 PD5 PD4 PD3 PD2 PD1 PD0 X2 ( TXE TXD P C1 ...
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... PC0/nPISTR1 PD3-0, PC7-1 PB7-0, _PA7-0 nPOSTR Revision 0.2 (10-23-08) Integrator Type A/D CLK STC (Start of conversion EOC (Completion of conversion) DATA10 - 0 D/A DI15 - 0 A-OUT STRB Page 64 DATASHEET TM Standalone Mode CircLink Controller Datasheet Analog input Analog output SMSC TMC2084 ...
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... Using SLT4 Plus RS485 Pulse Transformer SLT-4 from Nagano JRC Line – Line – Cct: Optional SMSC TMC2084 Power supply monitor IC with WDT (MB3794 from Fujitsu) Cw CK1 Cp CK2 INH RESET Power supply monitor IC with WDT (TPS3823 from TI ...
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... Considerations for Shared Pins When Port D is Configured as INPUT PORT PD7 PD6 PD5 PD4 PD3 PD2 PD1 PD0 Revision 0.2 (10-23-08) PGS2 PGS1 PGS0 PSSL 74HC244/541, etc NID3 NID2 NID1 NID0 nRESET Page 66 DATASHEET TM Standalone Mode CircLink Controller Datasheet SMSC TMC2084 ...
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... Either a pull- pull-down resister is required externally connected to each pin of both unused ports A and B as described above. H PA7, PB7 PA6, PB6 PA5, PB5 PA4, PB4 PA3, PB3 PA2, PB2 PA1, PB1 PA0, PB0 H SMSC TMC2084 PAD7 put Buf f er PB7-0 I nput buf ← A pull-up or pull- down resister is ...
Page 68
... PC7 PC6 PC5 PC4 Be sure to connect to input PC3 port. PC2 PC1 PC0 ← A pull pull – down resister is always required for a group of 4 pins L if and only if they are input port. H Page 68 DATASHEET TM Standalone Mode CircLink Controller Datasheet SMSC TMC2084 ...
Page 69
... High) to the first OUTPUT DATA packet received. To avoid this, either a pull- pull-down resister should be added externally to each pin of the OUTPUT PORT to ensure the inactive sate of the corresponding pin during the high-impedance state the low level causes inactive state (LED turns off), an external pull-down resister is required. Output port SMSC TMC2084 PGS2 PGS1 PGS0 PSSL ...
Page 70
... Oscillator Startup Time at Power-up (Tstart) The oscillator startup time (Tstart) is required for the crystal oscillator to stabilize. The startup time is required for TMC2084 regardless of whether a crystal oscillator or an external clock is used. After the oscillator startup time, the input clock to X1 pin becomes normal (after approximately 20 ms). ...
Page 71
... The length of stabilization time (Tphz and Tplz) depends on the resister value connected. Therefore, the duration of reset signal must be longer than Tphz + Tplz + setup time (30 ns). nRESET PD7-0, TXD SMSC TMC2084 Vdd(max): 3.6V Vdd(min): 3.0V Oscillator startup time (Tstart) > ...
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... Revision 0.2 (10-23-08) . 126 μ × 126μA × 10 kΩ R2 Vdd=3.3V R1 Hi-Z state LED R2 Vf= LED < Page 72 DATASHEET TM Standalone Mode CircLink Controller Datasheet = 4 mA (Max). However, this pin should OL ) flows in R1 and R2 from 1.3V and this exceeds the SMSC TMC2084 ...
Page 73
... As a guideline kΩ resister can typically be used; If shorter transition time from the active state to the high-impedance state is needed, use 4.7 kΩ. SMSC TMC2084 Page 73 DATASHEET Revision 0.2 (10-23-08) ...
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... Bus Type: MUX/Non-MUX none 8 bit 8/16 OUT : 16 OUT : 32/24/16 Pins Shared Pins and a Packet 7 kinds No No 2.44 kHz 1.22 kHz/19.1 Hz SMSC TMC2084 TM Controller Datasheet TMC2084 3.3V +/-0.3V 5V tolerant I +70C TQFP-48 pin 0.5mm Pitch 5 Mbps none CMI / RZ code Shared Pins none ...