參數(shù)資料
型號(hào): STA450A
廠商: 意法半導(dǎo)體
英文描述: XMRADIO SDARS SERVICE LAYER & SOURCE DECODER
中文描述: XMRADIO衛(wèi)星數(shù)字收音機(jī)服務(wù)層
文件頁(yè)數(shù): 11/66頁(yè)
文件大?。?/td> 439K
代理商: STA450A
11/66
STA450A
Figure 6. PCM Output Formats
1.4 Master Interface I2C
The I2C master interface is used by the STA450A to communicate with the external Conditional Access Pro-
cessor (CAP) with the following protocol:
a) Write sequences
16 sclk cycles
16 sclk cycles
LRCLK
PCM_OUT[2:0]
PCM_OUT[2:0]
PCM_ORD = 0, PCM_PREC is 16 bits mode
M
S
L
S
M
S
M
S
M
S
L
S
L
S
L
S
LRCLK
PCM_OUT[2:0]
PCM_OUT[2:0]
PCM_OUT[2:0]
PCM_OUT[2:0]
PCM_ORD = 1, PCM_PREC is 16 bits mode
32 sclk cycles
32 sclk cycles
M
S
L
S
M
S
L
S
18, 20 or 24 bits
18, 20 or 24 bits
18, 20 or 24 bits
18, 20 or 24 bits
18, 20 or 24 bits
18, 20 or 24 bits
0
0
18, 20 or 24 bits
18, 20 or 24 bits
M
S
L
S
0
L
S
M
S
0
0
M
S
0
0
M
S
0
L
S
L
S
PCM_FORMAT = 1
PCM_DIFF = 1
PCM_FORMAT = 0
PCM_DIFF = 1
PCM_FORMAT = 0
PCM_DIFF = 0
PCM_FORMAT = 1
PCM_DIFF = 0
L
S
M
S
M
S
L
S
MSB
MSB
START
SLAVE ADDRESS
SUB-ADDRESS @
W
SA
SA
DATA TO @ SA STOP
SUB-ADDRESS + SINGLE WRITE
SUB-ADDRESS INITIALIZATION
W : R/W BIT = WRITE
SA : SLAVE ACKNOWLEDGE
@ : SUB-ADDRESS VALUE
START
SLAVE ADDRESS
SUB-ADDRESS @
W
SA
SA
DATA TO @ SA
SUB-ADDRESS + MULTIPLE WRITE
DATA TO @+1
SA
DATA TO @+2 SA
STOP
START
SLAVE ADDRESS
SUB-ADDRESS @
W
SA
SA
STOP
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