AD1985 Analog Devices, AD1985 Datasheet - Page 29

• Manufacturer Part Number: AD1985
• Description: AC'97 2.3 Soundmax Codec W/jack Sensing
• Manufacturer: Analog Devices

AC ‘97 2.3 AMAP Compliant Default SPDIF Slot Assignments
Codec ID
00
00
00
01
01
10
10
11
PCM Front DAC Rate Register (Index 0x2C)
Reg Num Name
0x2C
This read/write sample rate control register contains 16-bit unsigned values, representing the rate of operation in Hz.
SR[15:0]
PCM Surround DAC Rate Register (Index 0x2E)
Reg Num NAME
0x2E
This read/write sample rate control register contains 16-bit unsigned values, representing the rate of operation in Hz.
This register sets the sample rate for the SURROUND DAC. This register’s reset default is to be locked to the PCM Front DAC sample rate
register (0x2C). To unlock this register, bit SSRU in Register 0x76 must be asserted.
SRS[15:0]
PCM LFE (and Center) DAC Rate Register (Index 0x30)
Reg
Num
0x30
This read/write sample rate control register contains 16-bit unsigned values, representing the rate of operation in Hz.
This register sets the sample rate for the LFE DAC and Center DAC. This register’s reset default is to be locked to the PCM Front DAC
sample rate register (0x2C). To unlock this register, bit SSRU in Register 0x76 must be asserted.
SRCL[15:0]
NAME
PCM LFE/C DAC
Rate
PCM Front DAC Rate
PCM Surr DAC Rate
Function
2-ch Primary w/SPDIF
4-ch Primary w/SPDIF
6-ch Primary w/SPDIF
+2-ch Secondary w/SPDIF
+4-ch Secondary w/SPDIF
+2-ch Secondary w/SPDIF
+4-ch Secondary w/SPDIF
+2-ch Secondary w/SPDIF
Sample Rate. The sampling frequency range is from 7 kHz (0x1B58) to 48 kHz (0xBB80) in 1 Hz increments. The codec may
not function correctly if frequencies are written outside this range. If 0 is written to ASCVRA (Reg 0x2A), then the sample
rate is reset to 48 kHz.
Sample Rate. The sampling frequency range is from 7 kHz (0x1B58) to 48 kHz (0xBB80) in 1 Hz increments. The codec
may not function correctly if frequencies are written outside this range. If 0 is written to ASCVRA (Reg 0x2A), then the
sample rate is reset to 48 kHz.
Sample Rate. The sampling frequency range is from 7 kHz (0x1B58) to 48 kHz (0xBB80) in 1 Hz increments. The codec
may not function correctly if frequencies are written outside this range. If 0 is written to ASCVRA (Reg 0x2A), then the
sample rate is reset to 48 kHz.
D15
SRCL15 SRCL14 SRCL13 SRCL12 SRCL11 SRCL10 SRCL9 SRCL8 SRCL7 SRCL6 SRCL5 SRCL4 SRCL3 SRCL2 SRCL1 SRCL0 0xBB80
D14
D15
SRF15 SRF14 SRF13 SRF12 SRF11 SRF10 SRF9 SRF8 SRF7 SRF6 SRF5 SRF4 SRF3 SRF2 SRF1 SRF0 0xBB80
D15
SRS15 SRS14 SRS13 SRS12 SRS11 SRS10 SRS9 SRS8 SRS7 SRS6 SRS5 SRS4 SRS3 SRS2 SRS1 SRS0 0xBB80
D13
D14
SPSA = 00
3 and 4
3 and 4
3 and 4
3 and 4
3 and 4
3 and 4
3 and 4
3 and 4
D14
D12
D13
D13
D11
SPSA = 01
7 and 8 [default]
7 and 8
7 and 8
7 and 8
7 and 8
7 and 8
7 and 8
7 and 8
D12
D12
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D11
D10
D11
D10
D10
D9
SPSA = 10
6 and 9
6 and 9 (default)
6 and 9 (default)
6 and 9
6 and 9 (default)
6 and 9
6 and 9
6 and 9
D8
D9
D9
D8
D8
D7
D7
D7
D6
D6
D6
SPSA = 11
10 and 11
10 and 11
10 and 11 (default)
10 and 11 (default)
10 and 11 (default)
10 and 11 (default)
D5
D5
D5
D4
D4
D4
D3
D3
D3
D2
D2
D2
D1
D1
D1
D0
AD1985
D0
D0
Default
Default
Default