MB86437 Datasheet, PDF (10/35 Pages) Fujitsu Component Limited. – 3 V Single Power Supply Audio Interface Unit (AIU)

MB86437
(4) Electronic volume controls
There are ten different electronic volume controls, EV0 through EV9, with the following specifications. Electronic
volume control settings are made by the SRD, SRC and STB signals, and setting values are reset by the XPRST
signal.
Table 1 Relation of Volume Control Data bit Values to Gain
Address 00001 00010 00011 01001 10100 10101 10011 00110 10011 10101
Data
EV0 EV1 EV2 EV3 EV4 EV5 EV6 EV7 EV8 EV9
Code
D4 D3 D2 D1
Inverte
d
Non-
Inverte
d
Inverte
d
Inverte
d
Non-
Inverte
d
Non-
Inverte
d
Non-
Inverte
d
Non-
Inverte
d
Non-
Inverte
d
Non-
Inverte
d
Unit
D0
D4 to D4 to D2 to D4 to D2 to D2 to D2 to D4 to
D1
D1
D0
D1
D0
D1
D0
D3
D4
D4
0 0 0 0 0 0 –7
–7 –15
8 –30 –11 –14
–9
0
1 00001
–10
–25 –12 –12
–9
0
2 0 0 0 1 0 –6
–6
–5
9 –20 –13 –10
–9
0
3 00011
0
–15 –14
–8
–9
0
4 0 0 1 0 0 –5
–5
5
10 –10 –15
–6
–9
0
5 00101
10
–5 –16
–4
–9
0
6 0 0 1 1 0 –4
–4
15
11
0 –17
–2
–9
0
7 00111
15
0 –18
0
–9
0
8 0 1 0 0 0 –3
–3
12
–6
9 01001
–6
10 0 1 0 1 0 –2
–2
13
–6
11 0 1 0 1 1
–6
12 0 1 1 0 0 –1
–1
14
–6
13 0 1 1 0 1
–6
14 0 1 1 1 0
0
0
15
–6
15 0 1 1 1 1
–6
16 1 0 0 0 0
1
1
16
–11 –14
–3
10
17 1 0 0 0 1
–12 –12
–3
10
18 1 0 0 1 0
2
2
17
–13 –10
–3
10
19 1 0 0 1 1
–14
–8
–3
10
20 1 0 1 0 0
3
3
18
–15
–6
–3
10
21 1 0 1 0 1
–16
–4
–3
10
22 1 0 1 1 0
4
4
19
–17
–2
–3
10
23 1 0 1 1 1
–18
0
–3
10
24 1 1 0 0 0
5
5
20
0
25 1 1 0 0 1
0
26 1 1 0 1 0
6
6
21
0
27 1 1 0 1 1
0
28 1 1 1 0 0
7
7
22
0
29 1 1 1 0 1
0
30 1 1 1 1 0
8
8
23
0
31 1 1 1 1 1
0
0
0
0
0
0
0
0
0
6 ^dB
6
6
6
6
6
6
6
Notes: • Each setting value is determined in relation to the initial setting value.
• Returns to initial value at reset (
parts)
• The "Inverted" and "Non-Inverted" columns indicate the I/O phase.
• Settings with no gain figure listed are undefined.
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