Detailed Description continued
Serial Communication
The user can control the operation of the SM3 module through the SPI port. Timing diagrams are shown below. When
SPI_ENABLE is high, SPI_OUT is in a Tri-state mode.
Serial Interface Timing, Read Access
Figure 4
SPI_Enable
t
CS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SPI_Clk
t
RWs
t
RWh
A0
LSB
t
CH
A2
A3
t
CL
A4
A5
A6
0
MSB
SPI_In
SPI_Out
A1
t
DRDY
D0
LSB
D1
D2
D3
D4
D5
D6
D7
MSB
Serial Interface Timing, Write Access
Figure 5
SPI_Enable
t
CS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SPI_Clk
t
CH
A2
A3
t
CL
A4
A5
A6
1
MSB
t
RWs
t
RWh
A0
LSB
SPI_In
A1
D0
LSB
D1
D2
D3
D4
D5
D6
D7
MSB
Data Sheet #:
TM052
Page 8
of
36
Rev:
03
Date:
11/07/08
© Copyright 2008 The Connor-Winfield Corp. All Rights Reserved
Specifications subject to change without notice
CONNOR-WINFIELD [ CONNOR-WINFIELD CORPORATION ]
