AM79Q02JC datasheet(52/68 Pages) ETC1

52 / 68 page

Am79Q02/021/031 Data Sheet

43, 44. Write/Read B2 Filter Coefficients (IIR)

MPI Command

(96/97h)

R/W = 0: Write

R/W = 1: Read

This function is described in Write/Read B1 Filter Coefficients (FIR) on page 49.

Power Up and Hardware Reset (RST) Values = AC01 (Hex) (B11 = 0.97656)

See note under Commands 31 and 32.

45, 46. Write/Read Debounce Time Register**

MPI Command

(C8/C9h)

R/W = 0: Write

R/W = 1: Read

Enable E1

EE1 = 0*

E1 multiplexing turned off

EE1 = 1

E1 multiplexing turned on

E1 Polarity

E1P = 0*

E1 is a high-going pulse

E1P = 1

E1 is a low-going pulse

There is no E1 output unless CMODE = 1.

Debounce for Switchhook

DSH = 0–15

Debounce period in ms

DSH contains the debouncing time (in ms) of the CD1 data (usually switchhook)

entering the Real Time Data register described earlier. The input data must remain

stable for the debouncing time in order to change the appropriate real time bit.

RSVD

Reserved for future use. Always write as 0, but 0 is not guaranteed when read.

Enable Chopper

ECH = 0*

Chopper output (CHCLK) turned off

ECH = 1

Chopper output (CHCLK) turned on

* Power Up and Hardware Reset (RST) Value = 20h.

** This command applies to all channels and does not depend on the state of the Channel

Enable Register.

Command

R/W

I/O Data Byte 1

C411

m411

C311

m311

I/O Data Byte 2

C211

m211

C111

m111

Command

R/W

I/O Data

EE1

E1P

DSH3

DSH2

DSH1

DSH0

RSVD

ECH

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