92hd98 Integrated Device Technology, 92hd98 Datasheet - Page 257

• Manufacturer Part Number: 92hd98
• Description: Datasheet
• Manufacturer: Integrated Device Technology

92HD98
SINGLE CHIP PC AUDIO SYSTEM, CODEC+MONO SPEAKER AMPLIFIER+CAPLESS HP+LDO
IDT CONFIDENTIAL
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
verb F86/786
verb F87/787
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Register Address
Register Address
Register Address
7.29.1.11. PWM1Register
7.29.1.12. PWM0 Register
7.29.1.13. LMTCTRL Register
Control operation of the volume Limiter (Compressor).
7
6:2
1
0
7:6
5
4
3
2
1
0
7:4
3
2:1
0
Bit
Bit
Bit
dithpos
PhaseOffset
Reserved
dither_range
dithclr
clk320mode
roundup
bfclr
fourthorder
add3_sel
Btl_test_mode
–
zerocross
stepsize
limiter_en
Label
Label
Label
RW
RO
RW
RW
RW
RW
R
RW
RW
RW
RW
RO
RW
RW
RW
Type Default
Type Default
Type Default
0
0
0
0
01
1
1
0
0
0
0
0
0
0
0
257
RESERVED
Dither position, where dither inserted after NS
0,1,2 = dither bits 2:0
4 = dither bits 3:1
5 = dither bits 4:1
...
19 = dither bits 19:17
1= dither -1 to +1, 0 = dither -3 to +3
1 = disable dither
PWM ch1 offset from ch0 at 8x sample rate by:
00 = 0 degrees
01 = 90 degrees
10 = 180 degrees
11 = NA
1 = PCA clock 320 mode
0 = PCA clock 294 mode
1= roundup, 0 = truncate for quantizer
1 = disable binomial filter
1 = fourth order binomial filter, 0 = 3rd order binomial filter
1 = 24-bit Noise Shaper output (pre-quantizer), 0 = 8/9/10-bit
quantizer output
1 = power stage test mode
Reserved for future use.
1 = only change limiter gain value on zero cross.
Gain stepsize when incrementing or decrementing:
0 - 0.75 dB, 1 - 1.5 dB, 2 - 3.0 dB, 3 - 6.0 dB
1 = enable limiter (compressor)
Description
Description
Description
V 0.91 10/10
92HD98