DS21554LB+ Maxim Integrated Products, DS21554LB+ Datasheet - Page 37

• Manufacturer Part Number: DS21554LB+
• Description: IC TXRX E1 5V 100-LQFP
• Manufacturer: Maxim Integrated Products

Specifications of DS21554LB+

• 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: Remote and AIS Alarm Detector / Generator
• Product: Framer
• Number Of Transceivers: 1
• Data Rate: 1.544 Mbps
• Supply Voltage (max): 5.25 V
• Supply Voltage (min): 4.75 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

CCR2: COMMON CONTROL REGISTER 2 (Address = 1A Hex)
SYMBOL
LOTCMC
(MSB)
ECUS
VCRFS
RSERC
ECUS
AAIS
ARA
RFE
RFF
VCRFS
POSITION
CCR2.7
CCR2.6
CCR2.5
CCR2.4
CCR2.3
CCR2.2
CCR2.1
CCR2.0
AAIS
Error Counter Update Select. See Section
0 = update error counters once a second
1 = update error counters every 62.5ms (500 frames)
VCR Function Select. See Section
0 = count BiPolar Violations (BPVs)
1 = count Code Violations (CVs)
Automatic Transmit AIS Generation.
0 = disabled
1 = enabled
Automatic Remote Alarm Generation.
0 = disabled
1 = enabled
RSER Control.
0 = allow RSER to output data as received under all conditions
1 = force RSER to one under loss of frame alignment conditions
Loss of Transmit Clock Mux Control. Determines whether the
transmit-side formatter should switch to the ever-present RCLKO if the
TCLK should fail to transition (see
0 = do not switch to RCLKO if TCLK stops
1 = switch to RCLKO if TCLK stops
Receive Force Freeze. Freezes receive-side signaling at RSIG (and TS16
in RSER if CCR3.3 = 1); will override Receive Freeze Enable (RFE).
See Section
0 = do not force a freeze event
1 = force a freeze event
Receive Freeze Enable. See Section
0 = no freezing of receive signaling data will occur
1 = allow freezing of receive signaling data at RSIG (and TS16 in RSER
if CCR3.3 = 1).
9
ARA
for details.
37 of 124
NAME AND DESCRIPTION
RSERC
Figure
7.1
LOTCMC
9
for details.
for details.
2-1).
7
for details.
RFF
(LSB)
RFE