Datasheet

CONTROL REGISTER DEFINITIONS (SOFTWARE MODE ONLY)
PCM1690
www.ti.com .............................................................................................................................................. SBAS448A – OCTOBER 2008 – REVISED JANUARY 2009
The PCM1690 has many user-programmable functions that are accessed via control registers, and are
programmed through the SPI or I
2
C serial control port. Table 15 shows the available mode control functions
along with reset default conditions and associated register address. Table 16 lists the register map.
Table 15. User-Programmable Mode Control Functions
FUNCTION RESET DEFAULT REGISTER LABEL
Mode control register reset Normal operation 64 MRST
System reset Normal operation 64 SRST
Analog mute function control Mute disabled 64 AMUTE[3:0]
Sampling mode selection Auto 64 SRDA[1:0]
Power-save mode selection Power save 65 PSMDA
Audio interface format selection I
2
S 65 FMTDA[3:0]
Operation control Normal operation 66 OPEDA[3:0]
Digital filter roll-off control Sharp roll-off 66 FLT[3:0]
Output phase selection Normal 67 REVDA[8:1]
Soft mute control Mute disabled 68 MUTDA[8:1]
Zero flag Not detected 69 ZERO[8:1]
Digital attenuation mode 0 dB to – 63 dB, 0.5 dB step 70 DAMS
Digital de-emphasis function control Disabled 70 DEMP[1:0]
ZERO1: DIN1, left-channel
Zero flag function selection 70 AZRO[1:0]
ZERO2: DIN1, right-channel
Zero flag polarity selection High for detection 70 ZREV
Digital attenuation level setting 0 dB, no attenuation 71 – 79 ATDAx[7:0]
Table 16. Register Map
ADR[6:0] DATA[7:0]
DEC HEX B7 B6 B5 B4 B3 B2 B1 B0
64 40 MRST SRST AMUTE3 AMUTE2 AMUTE1 AMUTE0 SRDA1 SRDA0
65 41 PSMDA RSV
(1)
RSV
(1)
RSV
(1)
FMTDA3 FMTDA2 FMTDA1 FMTDA0
66 42 OPEDA3 OPEDA2 OPEDA1 OPEDA0 FLT3 FLT2 FLT1 FLT0
67 43 REVDA8 REVDA7 REVDA6 REVDA5 REVDA4 REVDA3 REVDA2 REVDA1
68 44 MUTDA8 MUTDA7 MUTDA6 MUTDA5 MUTDA4 MUTDA3 MUTDA2 MUTDA1
69 45 ZERO8 ZERO7 ZERO6 ZERO5 ZERO4 ZERO3 ZERO2 ZERO1
70 46 DAMS RSV
(1)
DEMP1 DEMP0 RSV
(1)
AZRO1 AZRO0 ZREV
71 47 RSV
(1)
RSV
(1)
RSV
(1)
RSV
(1)
RSV
(1)
RSV
(1)
RSV
(1)
RSV
(1)
72 48 ATDA17 ATDA16 ATDA15 ATDA14 ATDA13 ATDA12 ATDA11 ATDA10
73 49 ATDA27 ATDA26 ATDA25 ATDA24 ATDA23 ATDA22 ATDA21 ATDA20
74 4A ATDA37 ATDA36 ATDA35 ATDA34 ATDA33 ATDA32 ATDA31 ATDA30
75 4B ATDA47 ATDA46 ATDA45 ATDA44 ATDA43 ATDA42 ATDA41 ATDA40
76 4C ATDA57 ATDA56 ATDA55 ATDA54 ATDA53 ATDA52 ATDA51 ATDA50
77 4D ATDA67 ATDA66 ATDA65 ATDA64 ATDA63 ATDA62 ATDA61 ATDA60
78 4E ATDA77 ATDA76 ATDA75 ATDA74 ATDA73 ATDA72 ATDA71 ATDA70
79 4F ATDA87 ATDA86 ATDA85 ATDA84 ATDA83 ATDA82 ATDA81 ATDA80
(1) RSV must be set to ' 0 ' .
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