Datasheet

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USER-PROGRAMMABLE MODE CONTROLS
Register Map
PCM1774
SLAS551 – JULY 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 64 40h Volume for HPA (L-ch) RSV HMUL HLV5 HLV4 HLV3 HLV2 HLV1 HLV0
Register 65 41h Volume for HPA (R-ch) RSV HMUR HRV5 HRV4 HRV3 HRV2 HRV1 HRV0
Register 68 44h DAC digital attenuation and soft mute (L-ch) RSV PMUL ATL5 ATL4 ATL3 ATL2 ATL1 ATL0
Register 69 45h DAC digital attenuation and soft mute (R-ch) RSV PMUR ATR5 ATR4 ATR3 ATR2 ATR1 ATR0
Register 70 46h DAC over sampling, de-emphasis, audio interface, DGC DEM1 DEM0 PFM1 PFM0 SPX1 SPX0 RSV OVER
Register 72 48h Analog mixer power up/down RSV RSV RSV RSV RSV RSV PMXR PMXL
Register 73 49h DAC and HPA power up/down PBIS PDAR PDAL RSV PHPR PHPL RSV RSV
Register 74 4Ah Analog output configuration select RSV RSV RSV RSV HPS1 HPS0 RSV PCOM
Register 75 4Bh HPA insertion detection, short protection RSV RSV RSV RSV SDHR SDHL RSV RSV
Register 77 4Dh Shut down status read back RSV RSV RSV RSV STHR STHL RSV RSV
Register 82 52h PG1, 2, 5, 6, power up/down RSV RSV PAIR PAIL RSV RSV RSV RSV
Register 84 54h Master mode RSV RSV RSV RSV RSV MSTR RSV BIT0
Register 85 55h System reset, sampling rate control, data swap SRST LRPC NPR5 NPR4 NPR3 NPR2 NPR1 NPR0
Register 86 56h BCK configuration, sampling rate control, zero-cross MBST MSR2 MSR1 MSR0 RSV RSV RSV ZCRS
Register 87 57h Analog input select (MUX1, 2, 3, 4) RSV RSV AIR1 AIR0 RSV RSV AIL1 AIL0
Register 88 58h Analog mixing switch (SW1, 2, 3, 4, 5, 6) RSV MXR2 MXR1 MXR0 RSV MXL2 MXL1 MXL0
Register 89 59h Analog to analog path (PG5, 6) gain RSV GMR2 GMR1 GMR0 RSV GML2 GML1 GML0
Register 90 5Ah Microphone boost RSV RSV RSV RSV RSV RSV G20R G20L
Register 92 5Ch Bass boost gain level LPAE RSV RSV LGA4 LGA3 LGA2 LGA1 LGA0
Register 93 5Dh Middle boost gain level RSV RSV RSV MGA4 MGA3 MGA2 MGA1 MGA0
Register 94 5Eh Treble boost gain level 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 digital monaural mixing RSV RSV RSV RSV RSV RSV RSV MXEN
Register 124 7Ch PG1/PG2 additional Gain RSV RSV RSV RSV RSV RSV G12R G12L
Register 125 7Dh Power up/down time control RSV PTM1 PTM0 RES4 RES3 RES2 RES1 RES0
HPA: Headphone amplifier DAC: D/A converter
PGx: Analog input buffer
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