BT8376EPF datasheet(252/323 Pages) CONEXANT

252 / 323 page

Bt8370/8375/8376

3.17 System Bus Registers

Fully Integrated T1/E1 Framer and Line Interface

3-134

Conexant

N8370DSE

RLOCAL

Enable Local Signaling Output—Determines whether the RSIGO output signaling and

RPCMO inserted signaling [INSERT; addr 0E0-0FF] are supplied from the RSIGn output

buffer or processor-supplied local signaling from RSIGA–RSIGD.

0 = RSIGn buffer signaling

1 = RSIGA-RSIGD local signaling

RSIGA–RSIGD

Local Receive Signaling—When RLOCAL is active, these four bits are inserted into RSIGO

instead of the buffered signaling from RSIGn. If both RLOCAL and INSERT are active, they

are also inserted into RPCMO during system bus signaling frames.

0 = output signaling bit equals 0

1 = output signaling bit equals 1

1A0–1BF—Receive Signaling Buffer (RSIGn; n = 0 to 31)

The Receive Signaling Buffer (RSIGn) contains all ABCD signaling inputs from all channels, regardless of

whether signaling is active [SIG_STK; addr 180–19F]. RSIGn is not updated during signaling freeze

conditions, or when the receive framer is configured in a non-signaling mode. Normal signaling buffer

operation transfers ABCD input to ABCD output, coincident with the D-bit update (in T1 mode), or coincident

with the receipt of the respective channel's ABCD signaling during TS16 (in E1 mode). When DEBOUNCE is

active, output signaling for active channels is updated coincident with the sampling of each input signaling bit.

This may cause the buffered output value to transition in the middle of the received multiframe.

RSIGn[7]

Output Signaling A Bit

RSIGn[6]

Output Signaling B Bit

RSIGn[5]

Output Signaling C Bit

RSIGn[4]

Output Signaling D Bit

RSIG0 (E1) RSIG16 (E1 Mode)

RSIGn[3]

Input Signaling A Bit

MAS.1

X.1

RSIGn[2]

Input Signaling B Bit

MAS.2

MYEL

RSIGn[1]

Input Signaling C Bit

MAS.3

X.3

RSIGn[0]

Input Signaling D Bit

MAS.4

X.4

RSIGn[7]

RSIGn[6]

RSIGn[5]

RSIGn[4]

RSIGn[3]

RSIGn[2]

RSIGn[1]

RSIGn[0]

BT8376EPF Datasheet(PDF) 252 Page - Synaptics Incorporated.

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