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参数资料
| 型号： | PCM3794RHBTG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 通信及网络 |
| 英文描述： | SPECIALTY TELECOM CIRCUIT, PQCC32 |
| 封装： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件页数： | 25/67页 |
| 文件大小： | 1417K |
| 代理商： | PCM3794RHBTG4 |
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SLES193C – AUGUST 2006 – REVISED FEBRUARY 2007
B15
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
Register 66
0
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
RSV
SMUL
SLV5
SLV4
SLV3
SLV2
SLV1
SLV0
Register 67
0
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
RSV
SMUR
SRV5
SRV4
SRV3
SRV2
SRV1
SRV0
IDX[6:0]: 100 0010b (42h): Register 66
IDX[6:0]: 100 0011b (43h): Register 67
SMUL: Digital Soft Mute Control for SPL (Speaker Output, L-Channel)
SMUR: Digital Soft Mute Control for SPR (Speaker Output R-Channel)
Default value: 1
SPOLP/SPOLN and SPORP/SPORN can be independently muted to the zero level when HMUL and HMUR = 1.
The SMUx mute takes precedence over analog volume level settings.
SMUL, SMUR = 0
Mute disabled
SMUL, SMUR = 1
Mute enabled (default)
SLV[5:0]: Gain Setting for SPL (Speaker Output L-Channel)
SRV[5:0]: Gain Setting for SPR (Speaker Output R-Channel)
Default value: 00 0000.
SPOLP/SPOLN and SPORP/SPORN 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, the noise
can be reduced when making the change by using zero-cross detection (register 85, ZCRS).
Table 8. Speaker Gain Level Setting
SLV[5:0],
GAIN LEVEL
SLV[5:0],
GAIN LEVEL
SLV[5:0],
GAIN LEVEL
STEP
SRV[5:0]
SETTING
SRV[5:0]
SETTING
SRV[5:0]
SETTING
11 1111
3F
6 dB
10 1001
29
–5 dB
01 0011
13
–21 dB
11 1110
3E
5.5 dB
10 1000
28
–5.5 dB
01 0010
12
–22 dB
1 dB
11 1101
3D
5 dB
10 0111
27
–6 dB
01 0001
11
–23 dB
11 1100
3C
4.5 dB
10 0110
26
–6.5 dB
01 0000
10
–24 dB
11 1011
3B
4 dB
10 0101
25
–7 dB
00 1111
0F
–26 dB
11 1010
3A
3.5 dB
10 0100
24
–7.5 dB
00 1110
0E
–28 dB
11 1001
39
3 dB
10 0011
23
0.5 dB
–8 dB
00 1101
0D
–30 dB
11 1000
38
2.5 dB
10 0010
22
–8.5 dB
00 1100
0C
–32 dB
11 0111
37
2 dB
10 0001
21
–9 dB
00 1011
0B
2 dB
–34 dB
11 0110
36
1.5 dB
10 0000
20
–9.5 dB
00 1010
0A
–36 dB
11 0101
35
1 dB
01 1111
1F
–10 dB
00 1001
09
–38 dB
0.5 dB
11 0100
34
0.5 dB
01 1110
1E
–10.5 dB
00 1000
08
–40 dB
11 0011
33
0 dB
01 1101
1D
–11 dB
00 0111
07
–42 dB
11 0010
32
–0.5 dB
01 1100
1C
–12 dB
00 0110
06
–46 dB
11 0001
31
–1 dB
01 1011
1B
–13 dB
00 0101
05
–50 dB
11 0000
30
–1.5 dB
01 1010
1A
–14 dB
00 0100
04
–54 dB
10 1111
2F
–2 dB
01 1001
19
–15 dB
00 0011
03
4 dB
–58 dB
10 1110
2E
–2.5 dB
01 1000
18
1 dB
–16 dB
00 0010
02
–62 dB
10 1101
2D
–3 dB
01 0111
17
–17 dB
00 0001
01
–66 dB
10 1100
2C
–3.5 dB
01 0110
16
–18 dB
00 0000
00
–70 dB
10 1011
2B
–4 dB
01 0101
15
–19 dB
10 1010
2A
– 4.5 dB
01 0100
14
–20 dB
31
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