BT8376EPF datasheet(85/323 Pages) CONEXANT

Part #	BT8376EPF

Description	single chip transceivers for T1/E1 and Integrated Service Digital Network (ISDN) primary rate interfaces

PDF	323 Pages

Scroll/Zoom	100%

Manufacturer	CONEXANT [Synaptics Incorporated.]

Direct Link	https://www.synaptics.com/

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85 / 323 page

Bt8370/8375/8376

2.0 Circuit Description

Fully Integrated T1/E1 Framer and Line Interface

2.8 Transmitter

N8370DSE

Conexant

2-57

The Transmit Data Link Controller can be programmed according to the CPU

bandwidth of your system. For systems with 1 CPU dedicated to 1 Bt8370, the

data link status can be polled, and the 64-byte transmit FIFO can be used like a

single byte transmit buffer. For systems where a single CPU controls multiple

Bt8370s, the data link can be interrupt-driven and the entire 64-byte transmit

FIFO can be used to store entire messages. See Figures 2-30 and 2-31 for a

high-level description of polling and interrupt-driven Transmit Data Link

Controller software.

Figure 2-30. Polled Transmit Data Link Processing

NOTE(S):

Selected N based on the data rate of link.

Transmit Message

Write Block/Byte to FIFO

Yes

Read FIFO Status

Write End of Message Register

Yes

Return

Wait N Milliseconds

End of

Message

FIFO Empty

Message

Block 1

Block 2

Block 3

0x00

0x20

0x40

or Near

Empty

BT8376EPF Datasheet(PDF) 85 Page - Synaptics Incorporated.