Tcr1, 4 in, Trai) – Rainbow Electronics DS26519 User Manual
Page 228
DS26519 16-Port T1/E1/J1 Transceiver
228 of 310
Register Name:
TCR1 (T1 Mode)
Register Description:
Transmit Control Register 1
Register Address:
181h + (200h x (n - 1)) + (2000h x [(n - 1) / 8]): where n = 1 to 16
Bit
# 7 6 5 4 3 2 1 0
Name TJC TFPT TCPT
TSSE
GB7S
TB8ZS
TAIS TRAI
Default
0 0 0 0 0 0 0 0
Note: See
for E1 Mode.
Bit 7: Transmit Japanese CRC-6 Enable (TJC)
0 = Use ANSI/AT&T:ITU-T CRC-6 calculation (normal operation).
1 = Use Japanese standard JT–G704 CRC-6 calculation.
Bit 6: Transmit F-Bit Pass Through (TFPT)
0 = F bits sourced internally.
1 = F bits sampled at TSERn (
.7 TFDLS must be programmed to 0).
Bit 5: Transmit CRC Pass Through (TCPT)
0 = Source CRC-6 bits internally.
1 = CRC-6 bits sampled at TSERn during F-bit time.
Bit 4: Transmit Software Signaling Enable (TSSE). This function is enabled by TB7ZS (
0 = Do not source signaling data from the
–16 registers regardless of the
–4 registers. The
–4 registers still define which channels are to have B7 stuffing performed.
1 = Source signaling data as enabled by the
–4 registers.
Bit 3: Global Bit 7 Stuffing (GB7S). This function is enabled by TB7ZS (
.0).
–4 registers to determine which channels containing all zeros are to be bit 7 stuffed.
1 = Force bit 7 stuffing in all zero byte channels of that port, regardless of how the
–4 registers are
programmed.
Bit 2: Transmit B8ZS Enable (TB8ZS)
0 = B8ZS disabled.
1 = B8ZS enabled.
Bit 1: Transmit Alarm Indication Signal (TAIS)
0 = Transmit data normally.
1 = Transmit an unframed all-ones code at TTIPn and TRINGn.
Bit 0: Transmit Remote Alarm Indication (TRAI)
0 = Do not transmit remote alarm.
1 = Transmit remote alarm.