Fujitsu FR81S ユーザーズマニュアル
CHAPTER 40: MULTI-FUNCTION SERIAL INTERFACE
6. Operation of CSIO
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : MULTI-FUNCTION SERIAL INTERFACE
FUJITSU SEMICONDUCTOR CONFIDENTIAL
203
Normal Transfer (II) Timing Chart (Serial Chip Select Pin Used)
Figure 6-11 Normal Transfer (I) Timing Chart (Serial Chip Select Pin Used)
D1
D0
●Transmission
operation
operation
SCK
SOUT
TDRE
TDR_RW
TXE
SCS*A
●Reception
operation
operation
SIN
Sampling
RDRF
RDR RD
RXE
D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7
TBI
D1
D0
D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7
1
st
byte
2
nd
byte
*B
*C
2
TBYTE
*A: SCS output when SCR:MS=0
*B:
”H” when SCR:MS=0
SCS input when SCR:MS=1
Undefined when SCR:MS=1
2
1
0
Transmissions
counter*D
counter*D
*C: "H” when MS=0
*D:
Internal counter to be count
D7 when MS=1
transmission bytes
Load
MB91520 Series
MN705-00010-1v0-E
1516