BT8376EPF datasheet(150/323 Pages) CONEXANT

150 / 323 page

3.0 Registers

Bt8370/8375/8376

3.6 Primary Control and Status Registers

Fully Integrated T1/E1 Framer and Line Interface

3-32

Conexant

N8370DSE

018—Programmable Input/Output (PIO)

ONESEC_IO

Bidirectional ONESEC Input/Output mode—Selects input or output mode for ONESEC signal

pin, and controls the internal timer interval used for 1-second status latching [LATCH; addr

046]. When ONESEC is an output, the JAT reference clock [JCLK; addr 002] develops the

1-second timer interval output, with an arbitrarily defined initial starting location. When

ONESEC is an input, the timer/latch interval is aligned to the rising edge of ONESEC input.

The system can apply ONESEC input to define any length timer/latch interval up to but not

greater than 1-second.

0 = ONESEC input

1 = ONESEC output

RDL_IO

Enable Receive Data Link—Selects which signals are present on bi-modal RNEGO/RDLCKO

and RPOSO/RDLO pins. When active, receive data link pins RDLCKO and RDLO are

enabled [see also DL3EN; addr 015]; otherwise, dual-rail RLIU data is output on RNEGO and

RPOSO pins.

0 = RNEGO and RPOSO

1 = RDLCKO and RDLO

TDL_IO

Enable Transmit Data Link—Selects which signals are present on bi-modal TNEGI/TDLCKO

and TPOSI/TDLI pins. When active, transmit data link pins TDLCKO and TDLI are enabled

[see also DL3EN; addr 015]; otherwise, TLIU data is supplied by the dual-rail TNEGI and

TPOSI inputs.

0 = TNEGI and TPOSI signals

1 = TDLCKO and TDLI signals

NOTE:

TDL_IO must be programmed to 1 to enable data output from the transmit frame

formatter.

INDY_IO

Enable Time Slot Indicators—Selects which signals are present on bi-modal TNEGO/RINDO

and TPOSO/TINDO pins. When active, system bus time slot indicators RINDO and TINDO

are enabled (see also [SBCn; addr 0E0–0FF]); otherwise, dual-rail TLIU data is output on

TNEGO and TPOSO pins.

0 = TNEGO and TPOSO

1 = RINDO and TINDO

ONESEC_IO

RDL_IO

TDL_IO

INDY_IO

RFSYNC_IO

RMSYNC_IO

TFSYNC_IO

TMSYNC_IO

BT8376EPF Datasheet(PDF) 150 Page - Synaptics Incorporated.

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