Features: • Add/drop two 1.544 Mbit/s signals from an STS-1, an STS-3/AU-3, or an STM-1 VC-4
• Independent add and drop bus timing modes
• Selectable AMI or B8ZS positive/negative rail or NRZ T1 interface. Performance counter provided for illegal coding violations
• Digital desynchronizer reduces systemic jitter in the presence of multiple pointer movements. A register is also provided to control the internal FIFO leak rate
• Drop buses are monitored for parity, loss of clock, and H4 multiframe errors
• Performance counters are provided for VT/TU pointer movements, BIP-2 errors and Far End Block Errors (FEBEs)
• VT/TUs are monitored for Loss Of Pointer, New Data Flags (NDFs), AIS, Remote Defect Indication (RDI), and size errors (S-bits)
• V5 byte Signal Label Mismatch and Unequipped detection
• Loopback, generate BIP-2 errors, and send RDI capability
• Intel microprocessor interface
• 120-pin plastic quad flat package
Application• STS-1/STS-3/STM-1 to 1.544 Mbit/s add/drop mux/demux
• Unidirectional or bidirectional ring applications
• STS-1/STS-3/STM-1 termination terminal mode multiplexer
• STS-1/STS-3/STM-1 test equipmentPinout
Specifications
| Parameter |
Symbol |
Min * |
Max * |
Unit |
| Supply voltage |
VDD |
-0.5 |
+6.0 |
V |
| DC input voltage |
VIN |
-0.5 |
VDD + 0.5 |
V |
| Ambient operating temperature |
TA |
-40 |
85 |
oC |
| Operating junction temperature |
TJ |
|
150 |
oC |
| Storage temperature range |
TS |
-55 |
150 |
oC |
*Note: Operating conditions exceeding those listed in Absolute Maximum Ratings may cause permanent failure. xposure to absolute maximum ratings for extended periods may impair device reliability.
DescriptionThe ADMA-T1P device is designed for add/drop multiplexer, terminal multiplexer, and dual and single unidirectional ring applications. Two T1 1.544 Mbit/s signals are mapped to and from asynchronous 1.5 Virtual Tributaries (VT1.5s) or Tributary Unit - 11s (TU- 11s). The ADMA-T1P interfaces to a multiple-segment, byte-parallel SONET/SDH-formatted bus at the 19.44 Mbit/s byte rate for STM-1/STS-3 operation or at the 6.48 Mbit/s byte rate for STS-1 operation. The T1 1.544 Mbit/s signals can be either AMI/B8ZS positive/negative rail- or NRZ-formatted signals. The ADMA-T1P provides performance counters, alarm detection, and the ability to generate errors and Alarm Indication Signals (AIS). T1 port loopback capability is also provided. The dual timing mode Plus feature increases the I/O signal pin count by 7 from the ADMA-T1 device level so that the ADMA-T1P has a 120-pin package.
The ADMA-T1P bus interface is used to connect to other TranSwitch devices such as the STM-1/STS-3/ STS-3c Overhead Terminator (SOT-3), TXC-03003, to form an STS-3/STM-1 add/drop or terminal system.
TXC-04011 Data Sheet
