SGTL5000XNAA3 Datasheet, PDF (82/84 Pages) Freescale Semiconductor, Inc – Low Power Stereo Codec with Headphone Amp

SGTL5000
DATASHEET
BITS
11:0
FIELD
RATE
RW RESET
DEFINITION
RW 0x28
AVC Attack Rate
This is the rate at which the AVC will apply attenuation to the
signal to bring it to the threshold level. AVC Attack Rate is
programmable. To use a custom rate, use the formula below
to convert from dB/S to hex value:
Hex Value = (1 - (10^(-(Rate_dBs/( 20*SYS_FS)))) * 2^19
where, SYS_FS is the system sample rate configured in
CHIP_CLK_CTRL register.
Example values:
0x28 = 32dB/s
0x10 = 8dB/s
0x05 = 4dB/s
0x03 = 2dB/s
7.0.0.43. DAP_AVC_DECAY
0x012A
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BITS
15:12
11:0
FIELD
RSVD
RATE
RW RESET
DEFINITION
RO 0x0 Reserved
RW 0x50
AVC Decay Rate
This is the rate at which the AVC releases the attenuation
previously applied to the signal during attack. AVC Decay
Rate is programmable. To use a custom rate, use the formula
below to convert from dB/S to hex value:
Hex Value = (1 - (10^(-(Rate_dBs/( 20*SYS_FS)))) * 2^23
where, SYS_FS is the system sample rate configured in
CHIP_CLK_CTRL register.
Example values:
0x284 = 32dB/s
0xA0 = 8dB/s
0x50 = 4dB/s
0x28 = 2dB/s
7.0.0.44. DAP_COEF_WR_B1_MSB
0x012C
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BITS
15:0
FIELD
MSB
RW RESET
DEFINITION
RW 0x0
Most significant 16-bits of the 20-bit filter coefficient that needs
to be written
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SGTL5000 EA2 DS-0-3