AM79Q02 Datasheet, PDF (46/68 Pages) List of Unclassifed Manufacturers – Quad Subscriber Line Audio-Processing Circuit (QSLAC) Devices

26, 27. Write/Read Interrupt Mask Register
(6C/6Dh)
R/W = 0: Write
R/W = 1: Read
MPI Command
Command
I/O Data
D₇
0
MCDB4
D₆
1
MCDA4
D₅
1
MCDB3
D₄
0
MCDA3
D₃
1
MCDB2
D₂
1
MCDA2
D₁
0
MCDB1
D₀
R/W
MCDA1
Mask CD Interrupt
MCDxy = 0
CDxy bit is NOT MASKED
MCDxy = 1*
CDxy bit is MASKED
x
Bit number (A or B)
y
Channel number (1 through 4)
Masked: A change does not cause the Interrupt Pin to go Low.
This command does not depend on the state of the Channel Enable Register.
* Power Up and Hardware Reset (RST) Value = FFh.
28, 29. Write/Read Operating Conditions
MPI Command
(70/71h)
R/W = 0: Write
R/W = 1: Read
Command
I/O Data
D₇
D₆
D₅
D₄
D₃
D₂
D₁
D₀
0
1
1
1
0
0
0
R/W
CTP
CRP HPF
RG
ATI
ILB
FDL TON
Cutoff Transmit Path
CTP = 0*
CTP = 1
Transmit path connected
Transmit path cut off
Cutoff Receive Path
CRP = 0*
CRP = 1
Receive path connected
Receive path cutoff (see note)
High Pass Filter
HPF = 0*
HPF = 1
Transmit Highpass filter enabled
Transmit Highpass filter disabled
Lower Receive Gain
RG = 0*
RG = 1
6 dB loss not inserted
6 dB loss inserted
Arm Transmit Interrupt
ATI = 0*
ATI = 1
Transmit Interrupt not Armed
Transmit Interrupt Armed
Interface Loopback
ILB = 0*
ILB = 1
TSA loopback disabled
TSA loopback enabled
Full Digital Loopback
FDL = 0*
FDL = 1
Full digital loopback disabled
Full digital loopback enabled
1 kHz Receive Tone
TON = 0*
TON = 1
1 kHz receive tone off
1 kHz receive tone on
* Power Up and Hardware Reset (RST) Value = 00h.
The B Filter is disabled during receive cutoff.
46
Am79Q02/021/031 Data Sheet