DS21455 Maxim Integrated Products, DS21455 Datasheet - Page 12

• Manufacturer Part Number: DS21455
• Description: Network Controller & Processor ICs Quad E1-T1-J1 Single -Chip Transceiver (S
• Manufacturer: Maxim Integrated Products

Specifications of DS21455

• Product: Framer
• Number Of Transceivers: 4
• Data Rate: 64 Kbps
• Supply Voltage (max): 3.465 V
• Supply Voltage (min): 3.135 V
• Supply Current (max): 328 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Package / Case: BGA

2.4 Jitter Attenuator
2.5 Framer/Formatter
32-bit or 128-bit crystal-less jitter attenuator
Requires only a 2.048MHz master clock for both E1 and T1 operation with the option to use
1.544MHz for T1 operation
Can be placed in either the receive or transmit path or disabled
Limit trip indication
Fully independent transmit and receive functionality
Full receive- and transmit-path transparency
T1 framing formats include D4, ESF, J1-D4, J1-ESF and SLC-96
Japanese J1 support for CRC6 and yellow alarm
E1 framing formats include FAS, CAS, and CRC-4
Detailed alarm- and status-reporting with optional interrupt support
Large path- and line-error counters for:
− T1 – BPV, CV, CRC6, and framing bit errors
− E1 – BPV, CV, CRC-4, E-bit, and frame alignment errors
− Timed or manual update modes
User-defined Idle Code Generation on a per-channel basis in both transmit and receive paths
Digital milliwatt code generation on the receive path
ANSI T1.403-1998 support
G.965 V5.2 link detect
RAI-CI detection and generation
AIS-CI detection and generation
Ability to monitor one DS0 channel in both the transmit and receive paths
In-band repeating-pattern generators and detectors
− Three independent generators and detectors
− Patterns from 1 bit to 8 bits or 16 bits in length
RCL, RLOS, RRA, and RAIS alarms interrupt on change of state
Flexible signaling support
− Software- or hardware-based
− Interrupt generated on change of signaling data
− Receive-signaling freeze on loss of sync, carrier loss, or frame slip
Hardware pins to indicate carrier loss and signaling freeze
Automatic RAI generation to ETS 300 011 specifications
Expanded access to Sa and Si bits
Option to extend carrier-loss criteria to a 1ms period as per ETS 300 233
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