DS2155 datasheet(185/262 Pages) DALLAS

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DS2156

185 of 262

U_TCR2

UTOPIA Transmit Control Register 2

57h

Bit #

Name

—

FDC1

FDC0

TCES

—

TPLIM

—

Default

Bits 0, 2, 6, 7/Unassigned, must be set to 0 for proper operation

Bit 1/Transmit Physical-Layer Interface Mode (TPLIM)

0 = clock + data + frame-pulse indication combination

1 = gapped clock + data combination

Bit 3/Transmit Clear E1 Selection (TCES). When this bit is set = 0, TS16 and TS0 are automatically gapped out.

This is only meaningful when U_TCR2.1 is set = 0. E1TCR1.7 must be set = 1 if TCES = 1.

0 = TS16 and TS0 gapped out

1 = TS16 and TS0 not gapped out

Bits 4, 5/Transmit FIFO Depth Configuration Bits (FDC1, FDC0)

FDC1

FDC0

Cell Depth

Reserved

U_RCFR

UTOPIA Receive Configuration Register

60h

Bit #

Name

—

RUPM

RPC

Default

Bit 0/Receive Port Configuration (RPC)

0 = T1 mode

1 = E1 mode

Bit 1/Receive UTOPIA Polling Mode (RUPM)

0 = multiplexed with 1CLAV mode

1 = direct status

Bits 2 to 7/Unassigned, should be set to 0 for proper operation

DS2155 Datasheet(PDF) 185 Page - Dallas Semiconductor

DS2155 Datasheet(HTML) 185 Page - Dallas Semiconductor

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