PCM3793RHB BURR-BROWN [Burr-Brown Corporation], PCM3793RHB Datasheet - Page 30

• Manufacturer Part Number: PCM3793RHB
• Description: 16-Bit, Low-Power Stereo Audio CODEC With Microphone Bias, Headphone, and Digital Speaker Amplifier
• Manufacturer: BURR-BROWN [Burr-Brown Corporation]

PCM3793
PCM3794
SLES193A – AUGUST 2006 – REVISED SEPTEMBER 2006
30
Register Definitions
IDX[6:0]: 100 0000b (40h): Register 64
IDX[6:0]: 100 0001b (41h): Register 65
HMUL: Analog Mute Control for HPL (Line or Headphone L-Channel)
HMUR: Analog Mute Control for HPR (Line or Headphone R-Channel)
Default value: 1
HPOL/LOL and HPOR/LOR can be independently muted to zero level when HMUL and HMUR = 1. The HMUx
mute takes precedence over analog volume level settings.
HLV[5:0]: Analog Volume for HPL (Headphone L-Channel)
HRV[5:0]: Analog Volume for HPR (Headphone R-Channel)
Default value: 00 0000.
HPOL/LOL and HPOR/LOR can be independently controlled from 6 dB to –70 dB, with step size depending on
the gain level. Outputs may have zipper noise while changing levels. In the PCM3793/94, the noise can be
reduced when making the change by using zero-cross detection (register 85, ZCRS).
Register 64
Register 65
HMUL, HMUR = 0
HMUL, HMUR = 1
11 1111
11 1110
11 1101
11 1100
11 1011
11 1010
11 1001
11 1000
11 0111
11 0110
11 0101
11 0100
11 0011
11 0010
11 0001
11 0000
10 1111
10 1110
10 1101
10 1100
10 1011
10 1010
HLV[5:0],
HRV[5:0]
3D
3C
2D
2C
3F
3E
3B
3A
2F
2E
2B
2A
39
38
37
36
35
34
33
32
31
30
B15
0
0
0.5 dB
STEP
IDX6
IDX6
B14
IDX5
IDX5
GAIN LEVEL
B13
SETTING
– 4.5 dB
–0.5 dB
–1.5 dB
–2.5 dB
–3.5 dB
5.5 dB
4.5 dB
3.5 dB
2.5 dB
1.5 dB
0.5 dB
–1 dB
–2 dB
–3 dB
–4 dB
6 dB
5 dB
4 dB
3 dB
2 dB
1 dB
0 dB
Mute disabled
Mute enabled (default)
IDX4
IDX4
B12
Table 6. Headphone Gain Level Setting
IDX3
IDX3
B11
10 1001
10 1000
10 0111
10 0110
10 0101
10 0100
10 0011
10 0010
10 0001
10 0000
01 1111
01 1110
01 1101
01 1100
01 1011
01 1010
01 1001
01 1000
01 0111
01 0110
01 0101
01 0100
HLV[5:0],
HRV[5:0]
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IDX2
IDX2
B10
1E
1D
1C
1B
1A
29
28
27
26
25
24
23
22
21
20
1F
19
18
17
16
15
14
IDX1
IDX1
B9
0.5 dB
STEP
IDX0
IDX0
1 dB
B8
RSV
RSV
B7
GAIN LEVEL
SETTING
–10.5 dB
–5.5 dB
–6.5 dB
–7.5 dB
–8.5 dB
–9.5 dB
–10 dB
–11 dB
–12 dB
–13 dB
–14 dB
–15 dB
–16 dB
–17 dB
–18 dB
–19 dB
–20 dB
–5 dB
–6 dB
–7 dB
–8 dB
–9 dB
HMUR
HMUL
B6
HRV5
HLV5
B5
01 0011
01 0010
01 0001
01 0000
00 1111
00 1110
00 1101
00 1100
00 1011
00 1010
00 1001
00 1000
00 0111
00 0110
00 0101
00 0100
00 0011
00 0010
00 0001
00 0000
HLV[5:0],
HRV[5:0]
HRV4
HLV4
B4
0F
0E
0D
0C
0B
0A
HRV3
13
12
11
10
09
08
07
06
05
04
03
02
01
00
HLV3
B3
STEP
1 dB
2 dB
4 dB
HRV2
HLV2
B2
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HRV1
HLV1
GAIN LEVEL
B1
SETTING
–21 dB
–22 dB
–23 dB
–24 dB
–26 dB
–28 dB
–30 dB
–32 dB
–34 dB
–36 dB
–38 dB
–40 dB
–42 dB
–46 dB
–50 dB
–54 dB
–58 dB
–62 dB
–66 dB
–70 dB
HRV0
HLV0
B0