cx29503 Mindspeed Technologies, cx29503 Datasheet - Page 188

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

Register Description
Table 8-24. T1 Transmit Framer Modes (T1/E1N = 1)
0x71—Transmitter Configuration (TCR1)
Reserved bits should be written to 0.
TNRZ
TABORT
0x72—Transmit Frame Format (TFRM)
TFRM controls the insertion of overhead bits generated by transmit frame and alarm formatters.
Unused bits should be written to 0.
INS_MYEL
INS_YEL
8-58
TFRAME
(set to 1)
0000
1100
0100
0101
0001
1101
TNRZ
—
7
7
FT Only
SF
SF + JYEL
ESF + No CRC
ESF + Mimic CRC
ESF + Force CRC
(set to 1)
For the CX92503, this bit is not applicable and must be set to 1 to disable encoding.
For the CX92503, this bit is not applicable and must be set to 1 to disable the offline framer
from responding to disabled reframe requests (TLOF).
Insert Multiframe Yellow Alarm—Applicable to E1 modes only. Enables the alarm formatter
to output the Y16 Multiframe Yellow Alarm. Once enabled, TMYEL and AUTO_MYEL
[addr: 075] control the alarm output state. This bit must be set to 0 in T1 modes.
The alarm formatter outputs yellow alarms YB2 or YJ during T1 modes, or Y0 during E1
modes. In ESF framed T1 mode, the YF Yellow Alarm is transmitted by programming the DL1
data link controller and by transmitting the appropriate Bit-Oriented Protocol (BOP) code
message. Once enabled, TYEL and AUTO_YEL [addr: 075] control the yellow alarm output
state. In E1 MFAS mode, this bit must be set to 1.
TABORT
Framer Mode
—
6
6
0 = do not insert multiframe yellow alarm
1 = insert multiframe yellow alarm
0 = do not insert yellow alarm
1 = insert yellow alarm
RESERVED
INS_MYEL
5
5
Mindspeed Technologies™
Yes
Yes
Fs
—
—
—
1s
RESERVED
INS_YEL
Preliminary Information
4
4
F-bit Overhead Insertion
FPS
Yes
Yes
Yes
—
—
—
RESERVED
INS_MF
3
3
CRC6
Yes
Yes
—
—
—
1s
RESERVED
INS_FE
2
2
Yes
Yes
Yes
—
—
—
Ft
RESERVED
INS_CRC
1
1
YEL
YB2
YB2
YB2
YB2
YB2
YJ
Yellow Alarms
CX29503 Data Sheet
29503-DSH-002-B
RESERVED
INS_FBIT
MYEL
0
0
—
—
—
YF
YF
YF