92hd81 Integrated Device Technology, 92hd81 Datasheet - Page 45

• Manufacturer Part Number: 92hd81
• Description: Single Chip Pc Audio System
• Manufacturer: Integrated Device Technology

SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
92HD81
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
11.One stereo DAC and corresponding pin widgets enabled (playback mode)
12.Mixer enabled
13.Idle measurement D3 set for minimum clicks/pops (biases and min. amps. on)
14.Can be set to 0.5 or 0.8 AVdd.
3.3.
BCLK Frequency
BCLK Period
BCLK High Phase
BCLK Low Phase
BCLK jitter
SDI delay
SDO setup
SDO hold
AC Timing Specs
3.3.1.
Parameter
HD Audio Bus Timing
Setup for SDO at both rising and
Hold for SDO at both rising and
Time after rising edge of BCLK
Period of BCLK including jitter
Average BCLK frequency
that SDI becomes valid
falling edges of BCLK
falling edges of BCLK
Figure 9. HD Audio Bus Timing
High phase of BCLK
Low phase of BCLK
BCLK jitter
Definition
Table 15. HD Audio Bus Timing
45
Symbol
T_high
T_low
T_tco
T_su
Tcyc
T_h
92HD81
23.997
41.163
17.5
17.5
Min
6
3
5
5
41.67
24.0
Typ
150
24.002
42.171
24.16
24.16
Max
500
11
4
PC AUDIO
V 0.97 01/09
Units
Mhz
ns
ns
ns
ns
ns
ns
ps