am79c02 Advanced Micro Devices, am79c02 Datasheet - Page 33
am79c02
Manufacturer Part Number
am79c02
Description
Dual Subscriber Line Audio Processing Circuit Dslac Devices
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C02.pdf
(48 pages)
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21. Write Operating Conditions
22. Read Operating Conditions
23. Read Revision Code Number
(70h)
(71h)
(73h)
Cut off Transmit Path
Cut off Receive Path
High-Pass Filter
Receive Path Gain
Analog Loopback
TSA Loopback
RSVD = Reserved. Always write as 0, but 0 is not guaranteed when read.
* Power up default value.
Note:
This command returns an 8-bit number describing the revision number of the DSLAC device. It
can be read on either channel.
Command
Input Data
Command
Output Data
Command
Output Data
The B Filter still is connected across the PCM highway during Receive Cut off. Accompany
Receive Cut off with a B Filter disable command.
CTP = 0*
CTP = 1
CRP = 0*
CRP = 1
HPF = 0*
HPF = 1
RG = 0*
RG = 1
ALB = 0*
ALB = 1
TLB = 0*
TLB = 1
SLAC Products
Transmit path connected
Transmit path cut off (see note)
Receive path connected
Receive path cut off
High-pass filter enabled
High-pass filter disabled
6 dB loss not inserted
6 dB loss inserted
Analog loopback disabled
Analog loopback enabled
TSA loopback disabled
TSA loopback enabled
CTP
CTP
D
D
D
0
0
0
#
7
7
7
CRP
CRP
D
D
D
1
1
1
#
6
6
6
HPF
HPF
D
D
D
1
1
1
#
5
5
5
RG
RG
D
D
D
1
1
1
#
4
4
4
ALB
ALB
D
D
D
0
0
0
#
3
3
3
TLB
TLB
D
D
D
0
0
0
#
2
2
2
RSVD
RSVD
D
D
D
0
0
1
#
1
1
1
RSVD
RSVD
D
D
D
0
1
1
#
0
0
0
33