
ISD5008
Publication Release Date: Oct 31 2008
- 24 -
Revision 1.2
Detail of Configuration Register 0
Volume Control Power Bit
Bit 0
(VLPD)
0
= Power ON
1
= Power OFF
SPEAKER and AUX OUT
Control Bits
Bits 2,1
(OPA1, OPA0)
00 = Power down SPKR and AUX
01 = SPKR ON, HIGH GAIN, AUX Power down
10 = SPKR ON, LOW GAIN, AUX Power down
11 = SPKR Powered down, AUX ON
OUTPUT MUX Con trol Bits
Bits 4,3
(OPS1, OPS0)
00 = Source is VOL CONTROL (VOL)
01 = Source is ANA IN Input (ANA IN AMP)
10 = Source is LOW PASS FILTER (FILT0)
11 = Source is SUM2 SUMMING AMP (SUM2)
ANA OUT Power Bit
Bit 5
(AOPD)
0
= Power ON
1
= Power OFF
ANA OUT MUX Con trol Bits
Bits 8,7,6
(AOS2, AOS1,
AOS0)
000 = Source is MICROPHONE AMP (FTHRU)
001 = Source is INPUT MUX (INP)
010 = Source is VOLUME CONTROL (VOL)
011 = Source is LOW PASS FILTER (FILT0)
100 = Source is SUM1 SUMMING AMP (SUM1)
101 = Source is SUM2 SUMMING AMP (SUM2)
110 = Unused
111 = Unused
INPUT SOURCE MUX
Control Bit
Bit 9
(INS0)
0
= Source is Microphone AGC AMP (AGC)
1
= Source is AUX IN Input (AUX IN AMP)
AUX IN AMP Power Bit
Bit 10
(AXPD)
0
= Power ON
1
= Power OFF
AUX IN AMP Control Bits
Bits 12,11
(AXG1, AXG0)
00
= Input Gain = 1, OTLP input Level = 0.694
01
= Input Gain = 1.414, OTLP input Level = 0.491
10
= Input Gain = 2, OTLP input Level = 0.347
11
= Input Gain = 2.828, OTLP input Level = 0.245
ANA IN AMP Power Bit
Bit 13
(AIPD)
0
= Power ON
1
= Power OFF
ANA IN AMP Control Bits
Bits 15,14
(AIG1, AIG0)
00
= Input Gain = 0.625, OTLP input Level = 1.11
01
= Input Gain = 0.883, OTLP input Level = 0.7l85
10
= Input Gain = 1.250, OTLP input Level = 0.555
11
= Input Gain = 1.767, OTLP input Level = 0.393