Datasheet

DS26521 Single T1/E1/J1 Transceiver
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Register Name:
TCR4 (T1 Mode Only)
Register Description:
Transmit Control Register 4
Register Address:
186h
Bit # 7 6 5 4 3 2 1 0
Name — — — — TRAIM TAISM TC1 TC0
Default 0 0 0 0 0 0 0 0
Bits 3: Transmit RAI Mode (TRAIM). Determines the pattern sent when TRAI (
TCR1.0) is activated in ESF frame
mode only.
0 = transmit normal RAI upon activation with
TCR1.0
1 = transmit RAI-CI (T1.403) upon activation with
TCR1.0
Bits 2: Transmit AIS Mode (TAISM). Determines the pattern sent when TAIS (
TCR1.1) is activated.
0 = transmit normal AIS (unframed all ones) upon activation with
TCR1.1
1 = transmit AIS-CI (T1.403) upon activation with
TCR1.1
Bits 1 and 0: Transmit Code Length Definition Bits (TC[1:0]).
TC1 TC0
LENGTH SELECTED
(BITS)
0 0 5
0 1 6 : 3
1 0 7
1 1 16 : 8 : 4 : 2 : 1
Register Name:
THFC
Register Description:
Transmit HDLC FIFO Control Register
Register Address:
187h
Bit # 7 6 5 4 3 2 1 0
Name — — — — — — TFLWM1 TFLWM2
Default 0 0 0 0 0 0 0 0
Bits 1 and 0: Transmit HDLC FIFO Low Watermark Select (TFLWM[1:2]).
TFLWM1 TFLWM2
TRANSMIT FIFO WATERMARK
(BYTES)
0 0 4
0 1 16
1 0 32
1 1 48