Renesas 4514 Network Card User Manual


 
APPLICATION
2.4 Serial I/O
2-43
4513/4514 Group User’s Manual
Fig. 2.4.4 Serial I/O transfer timing
S
IN
S
OUT
Slave
S
CK
SST instruction
S
OUT
S
IN
S
0
S
7
’S
1
S
2
S
3
S
4
S
5
S
6
S
7
SST instruction
Control signal
S
0
S
7
S
1
S
3
S
4
S
5
S
6
S
7
M
0
M
7
M
1
M
2
M
3
M
4
M
5
M
6
M
7
M
0
M
7
’M
1
M
2
M
3
M
4
M
5
M
6
M
7
S
2
Master
M
0
–M
7
: the contents of master serial I/O register
S
0
–S
7
: the contents of slave serial I/O register
Rising of S
CK
: serial input
Falling of S
CK
: serial output
M
0
’–M
7
’: previous MSB contents of master and slave