TMS320C54CST datasheet(71/171 Pages) TI

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Functional Overview

November 2001 − Revised September 2003

SPRS187B

Hybrid

and DC

Termination

Ring Detect

Off Hook

Isolation

Interface

Telephone

Line

Line-Side Chip

External

Internal

BFSR

BFSX

BCLKX

BCLKR

BDX

BDR

BFSRX

BCLKRX

BDX

BDR

Integrated

DAA Interface

DAA

Master

Clock

CPU

Clock

DAARESET

RESET

C1A

Figure 3−24. Functional Block Diagram

3.19.1

DAA Control Registers

This subsection describes the DAA control registers accessible through the McBSP and the functions of the

individual bits in the registers (a later subsection describes how these registers are accessed through the

McBSP). Table 3−26 shows each of the control registers, along with its address, and all of the active bits within

the register. The Table 3−27 through Table 3−45 describe the function of each of the control register bits in

detail. Note that the description of each of the register bits function is included here for reference, however,

these functions are more meaningful when described within the context of their use in DAA operation, which

is described in the later subsections. It is recommended, therefore, that this section be considered for

familiarity, and used for reference after referring to the remaining subsections of the DAA documentation.

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