BT8376EPF datasheet(237/323 Pages) CONEXANT

237 / 323 page

Bt8370/8375/8376

Fully Integrated T1/E1 Framer and Line Interface

3.17 System Bus Registers

N8370DSE

Conexant

3-119

0D5—TSB Sync Bit Offset (TSYNC_BIT)

OFFSET[2:0]

TSB Sync Bit Offset—Selects which TSB bit number coincides with TFSYNC and TMSYNC

sync pulses. Sync pulses are programmed to align to 1 bit in relation to TPCMI, TSIGI, and

TINDO time slots. If the sync pulses are desired to coincide with location of T1 F-bit or time

slot zero bit 1, OFFSET is programmed to equal 0. Sync bit offset is added to time slot offset

[TSYNC_TS; addr 0D6] to form a 10-bit OFFSET value that applies to TFSYNC and

TMSYNC location. Both TFSYNC and TMSYNC offsets are expressed as TSB.OFFSET,

allowing the system to generate or accept sync pulses at any bit location within the TSB frame.

0D6—TSB Sync Time Slot Offset (TSYNC_TS)

OFFSET[9:3]

TSB Sync Time Slot Offset—Selects which TSB time slot number coincides with TFSYNC

and TMSYNC sync pulses, in the range of time slots 0–127. If the sync pulses coincide with

location of T1 F-bit or TS0, OFFSET is programmed to equal 0.

—————

OFFSET[2]

OFFSET[1]

OFFSET[0]

OFFSET[2:0]

TSYNC Location

000

Bit 1 or F-bit

001

Bit 2

110

Bit 7

111

Bit 8

—

OFFSET[9]

OFFSET[8]

OFFSET[7]

OFFSET[6]

OFFSET[5]

OFFSET[4]

OFFSET[3]

2048, 1544, and 1536 kbps SBI Mode

OFFSET[9:3]

TSYNC Time Slot

0000000

0 or F-bit

0000001

0011110

0011111

BT8376EPF Datasheet(PDF) 237 Page - Synaptics Incorporated.

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