92HD99B Datasheet, PDF (42/225 Pages) Integrated Device Technology – SINGLE CHIP PC AUDIO SYSTEM

92HD99
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
3.4. Capless Headphone Supply Characteristics
Parameter
Min
Typ
LDO idle current
1
Capless Headphone Amp idle current
2
Charge Pump idle current
4
Charge Pump shutdown time
1
Charge Pump start-up time
10
Frequency
384
C1/C2 cap value
2.2
Table 19. Capless Headphone Supply
Max
Unit
2
mA
3
mA
6
mA
mS
mS
KHz
uF
3.5. AC Timing Specs
3.5.1. HD Audio Bus Timing
Parameter
BCLK Frequency
BCLK Period
BCLK High Phase
BCLK Low Phase
BCLK jitter
SDI delay
SDO setup
SDO hold
Definition
Symbol
Average BCLK frequency
Period of BCLK including jitter
Tcyc
High phase of BCLK
T_high
Low phase of BCLK
T_low
BCLK jitter
Time after rising edge of BCLK that
SDI becomes valid
T_tco
Setup for SDO at both rising and
falling edges of BCLK
T_su
Hold for SDO at both rising and
falling edges of BCLK
T_h
Table 20. HD Audio Bus Timing
Figure 14. HD Audio Bus Timing
Min
23.9976
41.163
17.5
17.5
3
5
5
Typ
24.0
41.67
150
Max
24.0024
42.171
24.16
24.16
500
11
Units
Mhz
ns
ns
ns
ps
ns
ns
ns
IDT CONFIDENTIAL
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92HD99