IDT82P2288 Datasheet, PDF (217/384 Pages) Integrated Device Technology – Octal T1/E1/J1 Long Haul Short Haul Transceiver

IDT82P2288
OCTAL T1/E1/J1 LONG HAUL / SHORT HAUL TRANSCEIVER
T1/J1 TPLC / RPLC / PRGD Test Configuration (0C7H, 1C7H, 2C7H, 3C7H, 4C7H, 5C7H, 6C7H, 7C7H)
Bit No.
7
Bit Name
Type
Default
6
5
Reserved
4
3
2
1
PRBSMODE1 PRBSMODE0 PRBSDIR
R/W
R/W
R/W
0
0
0
0
TESTEN
R/W
0
PRBSMODE[1:0]:
These two bits select one mode to extract/replace the data for the PRBS Generator/Detector.
= 00: The unframed mode is selected. All 24 channels are extracted/replaced and the per-channel configuration in the TEST bit (b6, T1/J1-ID-
41~58H) is ignored.
= 01: The 8-bit-based mode is selected. The received data will only be extracted/replaced on the channel configured by the TEST bit (b6, T1/J1-
ID-41~58H).
= 10: The 7-bit-based mode is selected. The received data will only be extracted/replaced on the 7 MSB of the channel configured by the TEST
bit (b6, T1/J1-ID-41~58H).
= 11: Reserved.
PRBSDIR:
= 0: The pattern in the PRBS Generator/Detector is generated in the transmit path and is detected in the receive path.
= 1: The pattern in the PRBS Generator/Detector is generated in the receive path and is detected in the transmit path.
TESTEN:
A transition from ‘0’ to ‘1’ on this bit initiates the PRBS Generator/Detector.
Programming Information
206
March 22, 2004