92hd98 Integrated Device Technology, 92hd98 Datasheet - Page 20

• 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.
ADC0.CnvrtID.Channel = 0
ADC1.CnvrtID.Channel = 2
ADC0.CnvrtID.Channel = 2
ADC1.CnvrtID.Channel = 0
BITCLK
SDI
ADC[1:0] Cnvtr
The stream will not be generated unless all entries for the targeted converters are set identically, and
the total number of assigned converter channels matches the value in the NmbrChan field. These
are listed the “Multi-Converter Stream Critical Entries.” table.
An example of a 4 Channel Steam with ADC0 supplying channels 0&1 and ADC1 supplying chan-
nels 2 & 3 is shown below. A 4 Channel stream can be created by assigning the same non-zero
stream id “Strm= N” to both ADC0 and ADC1. The sample rates must be set the same and the num-
ber of channels must be set to 4 channels “NmbrChan = 0011”.
The following figure describes the bus waveform for a 24-bit, 48KHz capture stream with ID set to 1.
0
STREAM ID
0
ADC1 CnvtrID
ADC0 CnvtrID
Stream ID
Stream ID
0
1
[15]
[14]
STREAM TAG
0
Bit Number
Length
Length
Data
Data
0
DATA LENGTH
Figure 2. Multi-channel timing diagram
1
Table 7. Example channel mapping
Left Channel
Left Channel
Figure 1. Multi-channel capture
1
ADC0
ADC1
0
StrmType
FrmtSmplRate
0
Sub Field Name
(NID = 0x08)
[3:0]
(NID = 0x07)
[3:0]
ADC0
Table 8: Mult-channel
L23
Right Channel
Right Channel
LEFT
ADC0
ADC1
20
ADC0
L0
ADC0
ADC0
R23
RIGHT
Left Channel
Left Channel
DATA BLOCK
ADC1
ADC0
ADC0
R0
Stream Type (TYPE):
0: PCM
1: Non-PCM (not supported)
Sample Base Rate
0= 48kHz
1=44.1KHz
Ch = 2
Ch=0
ADC1
L23
LEFT
Right Channel
Right Channel
ADC1
L0
ADC1
ADC1
ADC0
ADC1
R23
RIGHT
Description
ADC1
R0
V 0.91 10/10
92HD98