Datasheet

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PCM1774
SLAS551 – JULY 2007
Register 74
B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
Register 74 0 IDX6 IDX5 IDX4 IDX3 IDX2 IDX1 IDX0 RSV RSV RSV RSV HPS1 HPS0 RSV PCOM
IDX[6:0]: 100 1010b (4Ah): Register 74
HPS[1:0]: Line or Headphone Output Configuration
Default value: 00
HPOL/LOL and HPOR/LOR can be configured selected as follows.
HPS[1:0] Line or Headphone Output Configuration
0 0 Stereo output (default)
0 1 Single monaural output
1 0 Differential monaural output
1 1 Reserved
PCOM: Power Up/Down Control for V
COM
Default value: 0
This bit is used to control power up/down for V
COM
.
PCOM = 0 Power down (default)
PCOM = 1 Power up
Register 75
B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
Register 75 0 IDX6 IDX5 IDX4 IDX3 IDX2 IDX1 IDX0 RSV RSV RSV RSV SDHR SDHL RSV RSV
IDX[6:0]: 100 1011b (4Bh): Register 75
SDHR: Short Protection Status for HPR (R-Channel Headphone)
SDHL: Short Protection Status for HPL (L-Channel Headphone)
Default value: 0
Short-circuit protection can be disabled if this function is not needed in an application.
SDHR, SDSL = 0 Enabled (default)
SDHR, SDHL = 1 Disabled
Register 77
B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
Register 77 0 IDX6 IDX5 IDX4 IDX3 IDX2 IDX1 IDX0 RSV RSV RSV RSV STHR STHL RSV RSV
IDX[6:0]: 100 1101b (4Dh): Register 77
STHR: Short Protection Status for HPR (R-Channel Headphone)
STHL: Short Protection Status for HPL (L-Channel Headphone)
These bits can be used to read short protection status through the I
2
C interface.
STHR, STHL = 0 Detect short circuit
STHR, STHL = 1 Not detect short circuit
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