DS21552L+ Maxim Integrated Products, DS21552L+ Datasheet - Page 75

• Manufacturer Part Number: DS21552L+
• Description: IC TXRX T1 1-CHIP 5V 100-LQFP
• Manufacturer: Maxim Integrated Products

Specifications of DS21552L+

• Function: Single-Chip Transceiver
• Interface: E1, HDLC, J1, T1
• Number Of Circuits: 1
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 75mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Includes: DSX-1 and CSU Line Build-Out Generator, HDLC Controller, In-Band Loop Code Generator and Detector
• Product: Framer
• Number Of Transceivers: 1
• Data Rate: 64 Kbps
• Supply Voltage (max): 3.465 V
• Supply Voltage (min): 3.135 V
• Supply Current (max): 75 mA (Typ)
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Ic Interface Type: Parallel, Serial
• Supply Voltage Range: 4.75V To 5.25V
• Operating Temperature Range: 0°C To +70°C
• Digital Ic Case Style: LQFP
• No. Of Pins: 100
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

RHFR: RECEIVE HDLC FIFO (Address=05 Hex)
THIR: TRANSMIT HDLC INFORMATION (Address=06 Hex)
NOTE:
The TUDR bit is latched and will be cleared when read.
TBOC: TRANSMIT BOC REGISTER (Address=07 Hex)
SYMBOL
SYMBOL
SYMBOL
RHFR7
TEMPTY
(MSB)
(MSB)
(MSB)
SBOC
RHFR7
RHFR6
RHFR5
RHFR4
RHFR3
RHFR2
RHFR1
RHFR0
TFULL
TUDR
HBEN
SBOC
–
–
–
–
–
–
RHFR6
HBEN
POSITION
POSITION
POSITION
TBOC.7
TBOC.6
RHFR.7
RHFR.6
RHFR.5
RHFR.4
RHFR.3
RHFR.2
RHFR.1
RHFR.0
–
THIR.7
THIR.6
THIR.5
THIR.4
THIR.3
THIR.2
THIR.1
THIR.0
RHFR5
BOC5
NAME AND DESCRIPTION
HDLC Data Bit 7. MSB of a HDLC packet data byte.
HDLC Data Bit 6.
HDLC Data Bit 5.
HDLC Data Bit 4.
HDLC Data Bit 3.
HDLC Data Bit 2.
HDLC Data Bit 1.
HDLC Data Bit 0. LSB of a HDLC packet data byte.
NAME AND DESCRIPTION
Not Assigned. Could be any value when read.
Not Assigned. Could be any value when read.
Not Assigned. Could be any value when read.
Not Assigned. Could be any value when read.
Not Assigned. Could be any value when read.
Transmit FIFO Empty. A real–time bit that is set high when the FIFO is empty.
Transmit FIFO Full. A real–time bit that is set high when the FIFO is full.
Transmit FIFO Under-run. Set when the transmit FIFO empties out without the
TEOM control bit being set. An abort is automatically sent.
NAME AND DESCRIPTION
Send BOC. Rising edge triggered. Must be transitioned from a 0 to a 1 transmit the
BOC code placed in the BOC0 to BOC5 bits instead of data from the HDLC controller.
Transmit HDLC & BOC Controller Enable.
–
RHFR4
BOC4
–
75 of 137
RHFR3
BOC3
–
TEMPTY
RHFR2
BOC2
RHFR1
TFULL
BOC1
RHFR0
TUDR
(LSB)
(LSB)
(LSB)
BOC0