ST75951 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'ST75951' PDF : 21 Pages View PDF
ST75951
FUNCTIONAL DESCRIPTION (continued)
Figure 23
1/2 Sampling Period
Sampling Period
FS
D15
DI
DATA WORD INPUT
1
@regN (read only)
1/2 Sampling Period
Sampling Period
FS
D15
DATA WORD INPUT
1
@reg2 (read only)
D0
HC0
HC1
DATA WORD OUTPUT
10
REGISTER 2 VALUE
DATA WORD OUTPUT
10
REGISTER N VALUE
01
11.2 - Read Operation (Register n) (D15 = 1)
This is a two sampling frequency period duration
operation, where a first 16 bit word sent from the
host on DIN, contains the read qualifier and the
address register (register n).
Contemporaly ST75951 ouptuts on DOUT the regis-
ter 2 (GPIO) while the address field is decoded.
Then a second read operation with the default
address (register 2) is sent to the device. At that
Figure 25
time ST75951 outputs on DOUT the register n
value (see Figure 23, 24 and 25).
Figure 24
16 Bits Control Word Format
R/W ad2 ad1 ad0 d11...............d0
D15
D0
SCLK
Sampling Period, (128, 192, 256, 320 or 384)
1/2 Sampling Period
FS
(Only if Control Mode Selected)
D15
D1 D0
D15
DIN
DATA WORD INPUT (15 BITS)
0
HC1 = 0
HC0 = 0
DOUT
DIN
D15
D0
DATA WORD OUPUT (16 BITS)
D15
D1 D0
DATA WORD INPUT (15 BITS)
1
D15
D15
D0
D15
CONTROL WORD (16 BITS)
D15
DOUT
D0
DATA WORD OUPUT (16 BITS)
D15
D0
D15
REGISTER VALUE (16 BITS)
D15
D0
D15
DIN
DATA WORD INPUT (16 BITS)
HC1 = 0
HC0 = 1
D15
D0
D15
DOUT
DATA WORD OUPUT (16 BITS)
HC1 = 1
HC0 = X
D15
DIN
D15
DOUT
D0
DATA WORD INPUT (16 BITS)
D0
DATA WORD OUPUT (16 BITS)
D15
D0
D15
CONTROL WORD (16 BITS)
D15
D0
D15
REGISTER VALUE (16 BITS)
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