IDT82P2284 Integrated Device Technology, Inc., IDT82P2284 Datasheet - Page 163

• Manufacturer Part Number: IDT82P2284
• Description: 4 Channel T1/J1/E1 Transceiver
• Manufacturer: Integrated Device Technology, Inc.

IDT82P2284
T1/J1 FRMR Mode 0 (04DH, 14DH, 24DH, 34DH)
UNFM:
REFCRCE:
logic 1.
REFEN:
REFR bit.
REFR:
Programming Information
Bit Name
Default
Bit No.
Type
= 0: The data stream is received in framed mode and is processed by the Frame Processor.
= 1: The data stream is received in unframed mode and the Frame Processor is bypassed.
In ESF format:
= 0: Disable from re-searching for synchronization when the Excessive CRC-6 Error occurs.
= 1: Search for synchronization again when the Excessive CRC-6 Error occurs. This function can only be implemented only if the REFEN bit is
= 0: “Locked in frame”. Once the previous frame synchronization is acquired, no errors can lead to reframe except for manually setting by the
= 1: Search for synchronization again when it is out of synchronization.
A transition from logic 0 to logic 1 forces to re-search for a new SF, ESF, T1 DM frame.
7
6
Reserved
5
4
152
QUAD T1/E1/J1 LONG HAUL / SHORT HAUL TRANSCEIVER
UNFM
R/W
3
0
REFCRCE
R/W
2
1
REFEN
R/W
1
1
March 22, 2004
REFR
R/W
0
0