92hd98 Integrated Device Technology, 92hd98 Datasheet - Page 260

• 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 F93/793
verb F94/794
verb F95/795
Register Address
Register Address
Register Address
7.29.1.19. ATTEN Register
7.29.1.20. DC_COEF_SEL Register
7.29.1.21. BTL High-Pass Filter COEF_SEL Register
7:0
7:3
2:0
7:3
2:0
Bit
Bit
Bit
atten
Reserved
dc_coef_sel
Reserved
hp_coef_sel
Label
Label
Label
RW
RO
RW
RO
RW
Type
Type
Type
0x0
0
0x5
0
0x2
Default
Default
Default
260
RESERVED
RESERVED
Attenuation. Each bit represents 0.5dB of attenuation to be
applied to the channel. The range will be -125dB to 2dB as
follows:
0x00: +2dB
0x01: +1.5dB
0x02: +1.0dB
...
0x47: -33.5dB
0x48: -34.0dB
0x49: -34.5dB
...
0xFE: -125dB
0xFF: Hard Master Mute
0:dc_coef = 24’h100000;
//2^^-3 = 0.125
1:dc_coef = 24’h040000;
2:dc_coef = 24’h010000;
3:dc_coef = 24’h004000;
4:dc_coef = 24’h001000;
5:dc_coef = 24’h000400;
6:dc_coef = 24’h000100;
//2^^-15 = 0.000330517
7:dc_coef = 24’h000040;
//2^^-17
Select IIR coefficients for BTL amplifier high pass filter corner
frequency
000 = 100Hz
001 = 200Hz
010 = 300Hz
011 = 400Hz
100 = 500Hz
101 = 750Hz
110 = 1000Hz
111 = 2000Hz
Description
Description
Description
V 0.91 10/10
92HD98