IDT82P2281_09 Datasheet, PDF (154/371 Pages) Integrated Device Technology – Single T1/E1/J1 Long Haul / Short Haul Transceiver

IDT82P2281
SINGLE T1/E1/J1 LONG HAUL / SHORT HAUL TRANSCEIVER
T1/J1 RBIF Frame Pulse (048H)
Bit No.
7
6
5
Bit Name
Type
Reserved
Default
4
FSINV
R/W
0
3
2
Reserved
1
CMFS
R/W
0
0
ALTFIS
R/W
0
FSINV:
= 0: The receive framing pulse RSFS is active high.
= 1: The receive framing pulse RSFS is active low.
CMFS, ALTIFS:
In Receive Clock Master mode, these bits select what the pulse on RSFS indicates. The ALTIFS bit is only valid in SF format.
Format
SF
ESF, T1DM,
SLC-96
CMFS
0
0
1
1
0
1
ALTIFS
RSFSn Indication
0 The RSFS pulses during each F-bit.
1 The RSFS pulses during every second F-bit.
0 The RSFS pulses during the first F-bit of every SF frame.
1 The RSFS pulses during the first F-bit of every second SF frame.
X The RSFS pulses during each F-bit.
X The RSFS pulses during the first F-bit of every ESF/T1 DM/SLC-96 frame.
Programming Information
154
August 20, 2009