T8531 Agere Systems, Inc., T8531 Datasheet - Page 38

• Manufacturer Part Number: T8531
• Description: T8502 and T8503 Dual PCM Codecs with Filters
• Manufacturer: Agere Systems, Inc.

Codec Chip Set
Software Interface
Table 30. Bit Map for T8532 Channel Control Register 2 at 0x1518—0x151F and 0x1558—0x155F
Notes:
SUSEQ = 0: normal operation.
SUSEQ = 1: start-up calibration sequence.
Table 31. T8532 Control Register 2: Receive Gain
Table 32. T8531 Control Register Map
Note: A board control word controls a function that is common to all 16 channels of a given chip set.
38
RXGAIN2
Not used
15—8
Bit 2
Address Range
0
0
0
0
1
1
1
1
0x1FFE
0x1FFC
0x1FFA
0x1FF8
0x1FF6
RXGAIN1
SUSEQ
Bit 1
7
(continued)
0
0
1
1
0
0
1
1
Bit Number and Function
Not used
Board control word 1
Board control word 2
Board control word 3
Board control word 4
Board control word 5
RXGAIN0
Register Contents
6—3
Bit 0
0
1
0
1
0
1
0
1
2
Termination Impedance Is On
Write by Microprocessor Interface
–12.04 dB receive gain
–12.04 dB receive gain
–3.01 dB receive gain
–6.02 dB receive gain
–9.03 dB receive gain
6.02 dB receive gain
3.01 dB receive gain
0.0 dB receive gain
Mode TLP Levels,
Receive gain
1
Y
Y
Y
Y
Y
Lucent Technologies Inc.
0
November 2000