NEC V850ES/SA2 UPD703201 Manual page 334

(2) Clocked serial interface clock selection register n (CSICn)
The CSICn register is an 8-bit register that controls the transmit operation of CSIn.
This register can be read or written in 8-bit units.
Caution The CSICn register can only be overwritten after CSIEn is cleared to 0 in the CSIMn register.
After reset: 00H
CSICn 0
CKPn
0
0
1
1
CKSn2
0
0
0
0
1
1
1
1
Notes 1. CSIC4: V850ES/SA3 only
2. m = 2 when n = 0
m = 3 when n = 1
m = 4 when n = 2
m = 5 when n = 3
m = 5 when n = 4 (V850ES/SA3 only)
334
CHAPTER 12 SERIAL INTERFACE FUNCTION
R/W Address: CSIC0: FFFFFD01H, CSIC1: FFFFFD11H, CSIC2: FFFFFD21H
CSIC3: FFFFFD31H, CSIC4
0 0 CKPn
DAPn Specification of data transmission/reception timing for SCKn
0
SCKn (I/O)
SOn (output)
SIn capture
1
SCKn (I/O)
SOn (output)
SIn capture
0
SCKn (I/O)
SOn (output)
SIn capture
1
SCKn (I/O)
SOn (output)
SIn capture
CKSn1 CKSn0 Input clock
0 0
f /2
XX
0 1
f /4
XX
1 0
f /8
XX
1 1
f /16
XX
0 0
f /32
XX
0 1
f /64
XX
1 0
TOm output
1 1
External clock (SCKn)
Preliminary User's Manual U15905EJ1V0UD
Note 1
: FFFFFD41H
DAPn CKSn2 CKSn1
D7 D6 D5 D4 D3 D2
D7 D6 D5 D4 D3 D2 D1
D7 D6 D5 D4 D3 D2
D7 D6 D5 D4 D3 D2 D1
Mode
Master mode
Master mode
Master mode
Master mode
Master mode
Master mode
Note 2
Master mode
Slave mode
CKSn0
D1 D0
D0
D1 D0
D0