71M6541F-DB Maxim Integrated Products, 71M6541F-DB Datasheet - Page 58
71M6541F-DB
Manufacturer Part Number
71M6541F-DB
Description
Power Management Modules & Development Tools 71M6541 Eval Kit
Manufacturer
Maxim Integrated Products
Datasheet
1.71M6541F-DB.pdf
(165 pages)
Specifications of 71M6541F-DB
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 58 of 165
- Download datasheet (3Mb)
the same threshold as the RX pin, but can also be used to sense the input from an external photo detector
Bit Banged Optical UART (Third UART)
As shown in
in a bit banged configuration. When control bit OPT_BB (I/O RAM 0x2022[0]) is set, the optical port is
Refer to the 71M6xxx Data Sheet for information on reading the VCC sensor in the 71M6x01 devices.
2.5.7 UART and Optical Interface
The 71M6541D/F and 71M6542F provide two asynchronous interfaces, UART0 and UART1. Both can be
used to connect to AMR modules, user interfaces, etc., and also support a mechanism for programming the
on-chip flash memory.
Referring to
designed to directly drive an external LED for transmitting data on an optical link. The pin OPT_RX has
used as the receiver for the optical link. OPT_TX and OPT_RX are connected to a dedicated UART port
(UART1).
The OPT_TX and OPT_RX pins can be inverted with configuration bits OPT_TXINV (I/O RAM 0x2456[0])
and OPT_RXINV (I/O RAM 0x2457[1]), respectively. Additionally, the OPT_TX output may be modulated at
38 kHz. Modulation is available in MSN and BRN modes (see
0x2456[1]) enables modulation. The duty cycle is controlled by OPT_FDC[1:0] (I/O RAM 0x2457[5:4]) ,
which can select 50%, 25%, 12.5%, and 6.25% duty cycle. A 6.25% duty cycle means that OPT_TX is
low for 6.25% of the period.
When not needed for UART1, OPT_TX can alternatively be configured as SEGDIO51. Configuration is
via the OPT_TXE[1:0] (I/O RAM 0x2456[3:2]) field and LCD_MAP[51] (I/O RAM 0x2405[0]). The
OPT_TXE[1:0] field allows the MPU to select VPULSE, WPULSE, SEGDIO51 or the output of the pulse
modulator to be sourced onto the OPT_TX pin. Likewise, the OPT_RX pin can alternately be configured
as SEGDIO55, and its control is OPT_RXDIS (I/O RAM 0x2457[2]) and LCD_MAP[55] (I/O RAM 0x2405[4]).
driven by DIO5 and the SEGDIO5 pin is driven by UART1_TX. This configuration is typically used when
the two dedicated UARTs must be connected to high speed clients and a slower optical UART is
permissible.
58
from
OPT_TX UART
A
B
Figure
Figure
OPT_TXMOD = 0
OPT_TXINV
19, UART1 includes an interface to implement an IR/optical port. The pin OPT_TX is
19, the 71M654x can also be configured to drive the optical UART with a DIO signal
© 2008–2011 Teridian Semiconductor Corporation
OPT_TXMOD
OPT_FDC
Figure 18: Optical Interface
A
EN
MOD
2
DUTY
VARPULSE
B
WPULSE
A
DIO2
Table
B
OPT_FDC = 2 (25%)
OPT_TXMOD = 1,
OPT_TXE[1:0]
67). The OPT_TXMOD bit (I/O RAM
0
3
2
1
1/38kHz
Internal
OPT_TX
V3P3
v1.1
Related parts for 71M6541F-DB
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
MAX7528KCWPMaxim Integrated Products [CMOS Dual 8-Bit Buffered Multiplying DACs]
Manufacturer:
Maxim Integrated Products
Datasheet:
Part Number:
Description:
Single +5V, fully integrated, 1.25Gbps laser diode driver.
Manufacturer:
Maxim Integrated Products
Datasheet:
Part Number:
Description:
Single +5V, fully integrated, 155Mbps laser diode driver.
Manufacturer:
Maxim Integrated Products
Datasheet:
Part Number:
Description:
VRD11/VRD10, K8 Rev F 2/3/4-Phase PWM Controllers with Integrated Dual MOSFET Drivers
Manufacturer:
Maxim Integrated Products
Datasheet:
Part Number:
Description:
Highly Integrated Level 2 SMBus Battery Chargers
Manufacturer:
Maxim Integrated Products
Datasheet:
Part Number:
Description:
Current Monitor and Accumulator with Integrated Sense Resistor; ; Temperature Range: -40°C to +85°C
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
TSSOP 14/A°/RS-485 Transceivers with Integrated 100O/120O Termination Resis
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
TSSOP 14/A°/RS-485 Transceivers with Integrated 100O/120O Termination Resis
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
QFN 16/A°/AC-DC and DC-DC Peak-Current-Mode Converters with Integrated Step
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
TDFN/A/65V, 1A, 600KHZ, SYNCHRONOUS STEP-DOWN REGULATOR WITH INTEGRATED SWI
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
Integrated Temperature Controller f
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
SOT23-6/I°/45MHz to 650MHz, Integrated IF VCOs with Differential Output
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
SOT23-6/I°/45MHz to 650MHz, Integrated IF VCOs with Differential Output
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
EVALUATION KIT/2.4GHZ TO 2.5GHZ 802.11G/B RF TRANSCEIVER WITH INTEGRATED PA
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
QFN/E/DUAL PCIE/SATA HIGH SPEED SWITCH WITH INTEGRATED BIAS RESISTOR
Manufacturer:
Maxim Integrated Products
Datasheet: