DS21552L+ Maxim Integrated Products, DS21552L+ Datasheet - Page 46

• 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

SR1: STATUS REGISTER 1 (Address=20 Hex)
(MSB)
SYMBOL
LUP
RSLIP
LOTC
RYEL
LRCL
RLOS
LDN
RBL
LUP
LDN
POSITION
SR1.7
SR1.6
SR1.5
SR1.4
SR1.3
SR1.2
SR1.1
SR1.0
LOTC
NAME AND DESCRIPTION
Loop Up Code Detected. Set when the loop up code as defined in the RUPCD register
is being received. See Section 16.5 for details.
Loop Down Code Detected. Set when the loop down code as defined in the RDNCD
register is being received. See Section 16.5 for details.
Loss of Transmit Clock. Set when the TCLK pin has not transitioned for one channel
time (or 5.2 ms). Will force the RLOS/LOTC pin high if enabled via CCR1.6. Also will
force transmit side formatter to switch to RCLK if so enabled via TCR1.7.
Receive Elastic Store Slip Occurrence. Set when the receive elastic store has either
repeated or deleted a frame.
Receive Blue Alarm. Set when an unframed all one’s code is received at RPOSI and
RNEGI.
Receive Yellow Alarm. Set when a yellow alarm is received at RPOSI and RNEGI.
Line Interface Receive Carrier Loss. Set when a red alarm is received at RTIP and
RRING.
Receive Loss of Sync. Set when the device is not synchronized to the receive T1
stream.
RSLIP
RBL
46 of 137
RYEL
LRCL
(LSB)
RLOS