DS26401 datasheet(110/309 Pages) DALLAS

110 / 309 page

DS26401 Octal T1/E1/J1 Framer

110

9.5 T1 Transmit Control Registers

TCR1

Transmit Control Register 1

181h + (200h x n) : where n = 0 to 7, for Ports 1 to 8

Bit #

Name

TJC

TFPT

TCPT

TSSE

GB7S

TB8ZS

TAIS

TRAI

Default

Bit 0 / Transmit Remote Alarm Indication (TRAI)

0 = do not transmit remote alarm

1 = transmit remote alarm

Bit 1 / Transmit Alarm Indication Signal (TAIS)

0 = transmit data normally

1 = transmit an unframed all-ones code at TPOS and TNEG

Bit 2 / Transmit B8ZS Enable (TB8ZS)

0 = B8ZS disabled

1 = B8ZS enabled

Bit 3 / Global Bit 7 Stuffing (GB7S)

0 = allow the SSIEx registers to determine which channels containing all zeros are to be bit 7 stuffed

1 = force bit 7 stuffing in all-zero byte channels regardless of how the SSIEx registers are programmed

Bit 4 / Transmit-Software Signaling Enable (TSSE)

0 = do not source signaling data from the TSx registers regardless of the SSIEx registers. The SSIEx

registers still define which channels are to have B7 stuffing performed.

1 = source signaling data as enabled by the SSIEx registers.

Bit 5 / Transmit CRC Pass-Through (TCPT)

0 = source CRC6 bits internally

1 = CRC6 bits sampled at TSER during F-bit time

Bit 6 / Transmit F-Bit Pass-Through (TFPT)

0 = F bits sourced internally

1 = F bits sampled at TSER

Bit 7 / Transmit Japanese CRC6 Enable (TJC)

0 = use ANSI/AT&T/ITU CRC6 calculation (normal operation)

1 = use Japanese standard JT–G704 CRC6 calculation

DS26401 Datasheet(PDF) 110 Page - Dallas Semiconductor

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