cx29503 Mindspeed Technologies, cx29503 Datasheet - Page 175

• Manufacturer Part Number: cx29503
• Description: Cx29503 Broadband Access Multiplexer Data Sheet
• Manufacturer: Mindspeed Technologies

CX29503 Data Sheet
0x45—Receive Alarm Signal Configuration (RALM)
Unused or reserved bits should be written to 0.
AUTO_AIS
DIS_LCV
FS_NFAS
YEL_INTEG
29503-DSH-002-B
AUTO_AIS
7
DIS_LCV
Automatically inserts an AIS toward the system when the line reports AIS or LOF in DS1
mode or OOF in E1 mode. This bit was added to the CX29503 DS1/E1 framer
implementation.
For the CX92503, this bit is not applicable and must be set to 1 to disable LCV indication and
counting.
Include FS/NFAS in FERR and FRED—Selects whether Fs bit errors (T1) or NFAS Bit 2
errors (E1) are counted as frame errors [FERR; addr: 050, 051]. Further selects whether LOF
alignment [FRED; addr: 049] includes Fs or NFAS bit errors as part of the detection criteria.
Enable Yellow Alarm Integration—When set, both the Receive Frame and Multiframe Yellow
alarms [RYEL and RMYEL; addr: 047] are integrated, as described in
selected framer mode). RYEL and RMYEL interrupt statuses [ISR7; addr: 004] are similarly
affected.
6
0 = FERR and FRED do not include FS/NFAS
1 = FERR and FRED include FS/NFAS
0 = normal RYEL and RMYEL status
1 = integrated RYEL and RMYEL status
Table 8-15. Receive Yellow Alarm Set and Clear Criteria <tableContinuation>(1 of 2)
NOTE:
Y0
Y0_INT
Y16
Y16_INT
YB2
YB2_INT
YJ
YJ_INT
Mode
FS_NFAS
5
Mindspeed Technologies™
The number of Fs bit locations checked also depends on the JYEL framer mode.
Set for 4 frames (500 µs) if 2 consecutive NFAS frames each contain TS0 bit 3 = 1.
Cleared for 4 frames if 2 consecutive NFAS frames each contain TS0 bit 3 = 0.
Set for 16 multiframes (24 ms) if every NFAS frame contains TS0 bit 3 = 1. Cleared
for 16 multiframes if 1 or more NFAS frames contain TS0 bit 3 = 0.
Set for 2 multiframes (4 ms) if frame 0 in 2 consecutive multiframes contains TS16
bit 6 = 1. Cleared for 2 multiframes if frame 0 in 2 consecutive multiframes
contains TS16 bit 6 = 0.
Set for 16 multiframes (24 ms) if every frame 0 contains TS16 bit 6 = 1. Cleared for
16 multiframes if at least 1 frame 0 contains TS16 bit 6 = 0.
Set for 1 frame (125 µs) if all 24 time slots contain bit 2 = 0. Cleared for 1 frame if
1 or more time slots contain bit 2 = 1.
Set for 192 frames (24 ms) if less than 15 time slots contain bit 2 = 0. Cleared for
192 frames if 15 or more time slots contain bit 2 = 1.
Set for 1 multiframe (1.5 ms) if frame 12 contains Fs bit = 1. Cleared for 1
multiframe if frame 12 contains Fs bit = 0.
Set for 16 multiframes (24 ms) if every frame 12 contains Fs bit = 1. Cleared for 16
multiframes (24 ms) if at least 1 frame 12 contains Fs bit = 0.
RESERVED
Preliminary Information
4
YEL_INTEG
3
Set and Clear Criteria
RLOF_INTEG
2
RESERVED
Table 8-15
1
Register Description
(per the
RESERVED
0
8
-
45