Datasheet
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USER-PROGRAMMABLE MODE CONTROLS
Register Map
PCM1870
SLAS544A – MAY 2007 – REVISED SEPTEMBER 2007
The mode control register map is shown in Table 6 . Each register includes an index (or address) indicated by the
IDX[6:0] bits.
Table 6. Mode Control Register Map
IDX [6:0]
REGISTER DESCRIPTION B7 B6 B5 B4 B3 B2 B1 B0
(B14 – B8)
Register 73 49h Analog bias power up/down PBIS RSV RSV RSV RSV RSV RSV RSV
Register 74 4Ah V
COM
power up/down RSV RSV RSV RSV RSV RSV RSV PCOM
Register 79 4Fh Volume for ADC input (L-ch) RSV RSV ALV5 ALV4 ALV3 ALV2 ALV1 ALV0
Register 80 50h Volume for ADC input (R-ch) RSV RSV ARV5 ARV4 ARV3 ARV2 ARV1 ARV0
Register 81 51h ADC high pass-filter, soft mute, audio interface HPF1 HPF0 RMUL RMUR RSV DSMC RFM1 RFM0
Register 82 52h ADC, MCB, PG1, 2, 5, 6, D2S power up/down RSV RSV PAIR PAIL PADS PMCB PADR PADL
Register 83 53h Auto level control for recording RALC RSV RRTC RATC RCP1 RCP0 RLV1 RLV0
Register 84 54h Master mode RSV RSV RSV RSV RSV MSTR RSV BIT0
Register 85 55h System reset, sampling rate control SRST RSV NPR5 NPR4 NPR3 NPR2 NPR1 NPR0
Register 86 56h BCK config, master mode, zero cross MBST MSR2 MSR1 MSR0 RSV RSV RSV ZCRS
Register 87 57h Analog input select (MUX1, 2, 3, 4) AD2S RSV AIR1 AIR0 RSV RSV AIL1 AIL0
Register 90 5Ah V
COM
power up/down, ramp up/down time, boost RSV RSV RSV RSV RSV RSV G20R G20L
Register 92 5Ch Bass boost gain level (200 Hz) LPAE RSV RSV LGA4 LGA3 LGA2 LGA1 LGA0
Register 93 5Dh Middle boost gain level (1 kHz) RSV RSV RSV MGA4 MGA3 MGA2 MGA1 MGA0
Register 94 5Eh Treble boost gain level (5 kHz) RSV RSV RSV HGA4 HGA3 HGA2 HGA1 HGA0
Register 95 5Fh Sound effect source select, 3D sound RSV 3DEN RSV 3FL0 3DP3 3DP2 3DP1 3DP0
Register 96 60h 2-stage notch filter, digital monaural mixing NEN2 NEN1 NUP2 NUP1 RSV RSV RSV MXEN
Register 97 61h 1st-stage notch filter lower coefficient (a1) F107 F106 F105 F104 F103 F102 F101 F100
Register 98 62h 1st-stage notch filter upper coefficient (a1) F115 F114 F113 F112 F111 F110 F109 F108
Register 99 63h 1st-stage notch filter lower coefficient (a2) F207 F206 F205 F204 F203 F202 F201 F200
Register 100 64h 1st-stage notch filter upper coefficient (a2) F215 F214 F213 F212 F211 F210 F209 F208
Register 101 65h 2nd-stage notch filter lower coefficient (a1) S107 S106 S105 S104 S103 S102 S101 S100
Register 102 66h 2nd-stage notch filter upper coefficient (a1) S115 S114 S113 S112 S111 S110 S109 S108
Register 103 67h 2nd-stage notch filter lower coefficient (a2) S207 S206 S205 S204 S203 S202 S201 S200
Register 104 68h 2nd-stage notch filter upper coefficient (a2) S215 S214 S213 S212 S211 S210 S209 S208
Register 124 7Ch Mic boost RSV RSV RSV RSV RSV RSV G12R G12L
ADC: A/D converter MCB: Microphone bias
PGx: Analog input buffer D2S: Differential to single-ended amplifier
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