am79q02 ETC-unknow, am79q02 Datasheet - Page 52

• Manufacturer Part Number: am79q02
• Description: Quad Subscriber Line Audio-processing Circuit Qslac Devices
• Manufacturer: ETC-unknow

43, 44. Write/Read B2 Filter Coefficients (IIR)
45, 46. Write/Read Debounce Time Register**
52
(96/97h)
R/W = 0: Write
R/W = 1: Read
(C8/C9h)
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 (
See note under Commands 31 and 32.
Enable E1
E1 Polarity
Debounce for Switchhook
RSVD
Enable Chopper
* Power Up and Hardware Reset (
** This command applies to all channels and does not depend on the state of the Channel
Enable Register.
Command
I/O Data Byte 1
I/O Data Byte 2
Command
I/O Data
EE1 = 0*
EE1 = 1
E1P = 0*
E1P = 1
There is no E1 output unless CMODE = 1.
DSH = 0–15
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.
Reserved for future use. Always write as 0, but 0 is not guaranteed when read.
ECH = 0*
ECH = 1
Am79Q02/021/031 Data Sheet
E1 multiplexing turned off
E1 multiplexing turned on
E1 is a high-going pulse
E1 is a low-going pulse
Debounce period in ms
Chopper output (CHCLK) turned off
Chopper output (CHCLK) turned on
C411
C211
EE1
D
D
RST
1
1
7
7
RST
) Values = AC01 (Hex) (B
) Value = 20h.
E1P
D
D
0
1
6
6
DSH3
m411
m211
D
D
0
0
5
5
DSH2
D
D
1
0
4
4
11
DSH1
C311
C111
= 0.97656)
D
D
0
1
3
3
DSH0
D
D
1
0
2
2
MPI Command
MPI Command
RSVD
m311
m111
D
D
1
0
1
1
ECH
R/W
R/W
D
D
0
0