NEC 78K0 Series User Manual page 395

The relationship between the register settings and pins is shown below.
Table 16-2. Relationship Between Register Settings and Pins (1/2)
(a) Serial interface CSI10
CSIE10 TRMD10 PM11
×
Note 1
0 ×
1 0 1
×
Note 1
1 1
1 1 1
1 0 1
×
Note 1
1 1
1 1 1
Notes 1. Can be set as port function.
2. To use P10/SCK10/T
3. To use the slave mode, set CKS102, CKS101, and CKS100 to 1, 1, 1.
Remark ×:
CSIE10:
TRMD10:
CKP10:
CKS102, CKS101, CKS100: Bits 2 to 0 of CSIC10
PM1×:
P1×:
CHAPTER 16 SERIAL INTERFACES CSI10 AND CSI11
P11 PM12 P12 PM10
× × × ×
Note 1 Note 1 Note 1 Note 1
× × ×
Note 1 Note 1
1
×
Note 1
0 0 1
×
0 0 1
× × ×
Note 1 Note 1
0
×
Note 1
0 0 0
×
0 0 0
D0 as port pins, clear CKP10 to 0.
X
don't care
Bit 7 of serial operation mode register 10 (CSIM10)
Bit 6 of CSIM10
Bit 4 of serial clock selection register 10 (CSIC10)
Port mode register
Port output latch
Preliminary User's Manual U17260EJ3V1UD
P10 CSI10
Operation
SI10/R
×
Note 1
Stop R
X
×
Slave
Note 3
reception
×
Slave R
X
Note 3
transmission
×
Slave
transmission/
Note 3
reception
1 Master reception
1 Master R
X
transmission
1 Master
transmission/
reception
Pin Function
D0/ SO10/P12 SCK10/
X
P11 T D0/P10
X
D0/P11 P12 T D0/
X
Note 2
P10
SI10 P12 SCK10
(input)
D0/P11 SO10 SCK10
(input)
SI10 SO10 SCK10
(input)
SI10 P12 SCK10
(output)
D0/P11 SO10 SCK10
(output)
SI10 SO10 SCK10
(output)
Note 3
Note 3
Note 3
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