92HD91 Datasheet, PDF (22/298 Pages) Integrated Device Technology – SINGLE CHIP PC AUDIO SYSTEM

92HD91
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
ADC1 CnvtrID
ADC0 CnvtrID
(NID = 0x08)
[3:0]
(NID = 0x07)
[3:0]
Ch = 2
Ch=0
Table 7. Example channel mapping
Figure 1. Multi-channel capture
ADC0.CnvrtID.Channel = 0
ADC1.CnvrtID.Channel = 2
Stream ID
Data
Length
ADC0.CnvrtID.Channel = 2
ADC1.CnvrtID.Channel = 0
Stream ID
Data
Length
ADC0
Left Channel
ADC1
Left Channel
ADC0
Right Channel
ADC1
Right Channel
ADC1
Left Channel
ADC0
Left Channel
ADC1
Right Channel
ADC0
Right Channel
BITCLK
SDI
The following figure describes the bus waveform for a 24-bit, 48KHz capture stream with ID set to 1.
Figure 2. Multi-channel timing diagram
0
0
0
1
0
0
1
1
0
0
ADC0
L23
ADC0 ADC0
L0
R23
ADC0 ADC1
R0
L23
ADC1 ADC1
L0
R23
ADC1
R0
STREAM ID
DATA LENGTH
STREAM TAG
LEFT
RIGHT
LEFT
RIGHT
ADC0
ADC1
DATA BLOCK
ADC[1:0] Cnvtr
Bit Number
[15]
[14]
[13:11]
Sub Field Name
Description
StrmType
FrmtSmplRate
SmplRateMultp
Stream Type (TYPE):
0: PCM
1: Non-PCM (not supported)
Sample Base Rate
0= 48kHz
1=44.1KHz
Sample Base Rate Multiple
000=48kHz/44.1kHz or less
001= x2
010= x3 (not supported)
011= x4 192kHz only, 176.4 not supported
100-111= Reserved
Table 8: Mult-channel
IDT™ CONFIDENTIAL
22
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
V 1.2 1/12
92HD91