TLC320AD55CDW datasheet(25/41 Pages) TI1

Il numero della parte	TLC320AD55CDW

Spiegazioni elettronici	Sigma-Delta Analog Interface Circuit

PDF	41 Pages

Scroll/Zoom	100%

Produttore elettronici	TI1 [Texas Instruments]

Homepage	http://www.ti.com

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25 / 41 page

3–7

3.5

Phone Mode Control

This function is provided for applications that need hardware control and monitor of external events. By

allowing the device to drive two FLAG terminals (set through the control 2 register), the host digital signal

processor (DSP) is capable of system control through the same serial port connection to the device. Along

with this control is the capability for monitoring the value of the ALT DATA terminal during a secondary

communication cycle. One application for this function is in monitoring ring detect or offhook detect from a

phone answering system. The two FLAG terminals allow response to these incoming control signals. Figure

3– 8 shows the timing associated with this operating mode.

DOUT

(Secondary

Write)

Primary

Secondary

Primary

Secondary

Primary

ALT DATA

DIN

Set FLAG 0 = FLAG 1 = 0

FLAG 0,

FLAG 1

DOUT

(Secondary

Read)

ALT DATA

Data

8 SCLKs

1 SCLK MAX

Set FLAG 0 = FLAG 1 = 1

Figure 3– 8. Phone Mode Timing

TLC320AD55CDW Scheda tecnica(PDF) 25 Page - Texas Instruments