DS26401 datasheet(219/309 Pages) DALLAS

219 / 309 page

DS26401 Octal T1/E1/J1 Framer

219

11.5 E1 Transmit Control Registers

TCR1

Transmit Control Register 1

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

Bit #

Name

TFPT

T16S

TG802

TSiS

TSA1

THDB3

TAIS

TCRC4

Default

Bit 0 / Transmit CRC4 Enable (TCRC4)

0 = CRC4 disabled

1 = CRC4 enabled

Bit 1 / Transmit AIS (TAIS)

0 = transmit data normally

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

Bit 2 / Transmit HDB3 Enable (THDB3)

0 = HDB3 disabled

1 = HDB3 enabled

Bit 3 / Transmit Signaling All Ones (TSA1)

0 = normal operation

1 = force time slot 16 in every frame to all ones

Bit 4 / Transmit International Bit Select (TSiS)

0 = sample Si bits at TSER pin

1 = source Si bits from TAF and TNAF registers (in this mode, TCR1.7 must be set to 0)

Bit 5 / Transmit G.802 Enable (TG802)

0 = do not force TCHBLK high during bit 1 of time slot 26

1 = force TCHBLK high during bit 1 of time slot 26

Bit 6 / Transmit Time Slot 16 Data Select (T16S)

0 = time slot 16 determined by the SSIEx and THSCS registers

1 = source time slot 16 from TS1 to TS16 registers

Bit 7 / Transmit Time Slot 0 Pass Through (TFPT)

0 = FAS bits/Sa bits/Remote Alarm sourced internally from the TAF and TNAF registers

1 = FAS bits/Sa bits/Remote Alarm sourced from TSER

DS26401 Datasheet(PDF) 219 Page - Dallas Semiconductor