IDT82P2288_08 Datasheet, PDF (239/362 Pages) Integrated Device Technology – Octal T1/E1/J1 Long Haul / Short Haul Transceiver

IDT82P2288
OCTAL T1/E1/J1 LONG HAUL / SHORT HAUL TRANSCEIVER
E1 Reference Clock Output Select (007H)
Bit No.
Bit Name
Type
Default
7
6
Reserved
5
RO22
R/W
0
4
RO21
R/W
0
3
RO20
R/W
0
2
RO12
R/W
0
1
RO11
R/W
0
0
RO10
R/W
0
RO2[2:0]:
When no LOS is detected, the REFB_OUT pin outputs a recovered clock from the Clock and Data Recovery function block of one of the eight links.
The link is selected by these bits:
RO2[2:0]
000
001
010
011
Selected Link
Link 1
Link 2
Link 3
Link 4
RO2[2:0]
100
101
110
111
Selected Link
Link 5
Link 6
Link 7
Link 8
When LOS is detected, the REFB_OUT pin outputs MCLK or high level, as selected by the REFH_LOS bit (b0, E1-03EH,...). (This feature is avail-
able in ZB revision only).
RO1[2:0]:
When no LOS is detected, the REFA_OUT pin outputs a recovered clock from the Clock and Data Recovery function block of one of the eight links.
The link is selected by these bits:
RO2[2:0]
000
001
010
011
Selected Link
Link 1
Link 2
Link 3
Link 4
RO2[2:0]
100
101
110
111
Selected Link
Link 5
Link 6
Link 7
Link 8
When LOS is detected, the REFA_OUT pin outputs MCLK or high level, as selected by the REFH_LOS bit (b0, E1-03EH,...). (This feature is avail-
able in ZB revision only).
Programming Information
239
March 04, 2009