CHAPTER 15 SERIAL INTERFACES CSI10 AND CSI11
User’s Manual U16899EJ2V0UD
332
Cautions 1. When the Ring-OSC clock is selected as the clock supplied to the CPU, the clock of the Ring-
OSC oscillator is divided and supplied as the serial clock. At this time, the operation of serial
interface CSI10 is not guaranteed.
2. Do not write to CSIC10 while CSIE10 = 1 (operation enabled).
3. Clear CKP10 to 0 to use P10/SCK10/TxD0, P11/SI10/RxD0, and P12/SO10 as general-purpose
port pins.
4. The phase type of the data clock is type 1 after reset.
Remarks 1. Figures in parentheses are for operation with fx = 10 MHz
2. f
X
: High-speed system clock oscillation frequency
Figure 15-6. Format of Serial Clock Selection Register 11 (CSIC11)
Address: FF89H After reset: 00H R/W
Symbol
7 6 5 4 3 2 1 0
CSIC11 0
0
0 CKP11
DAP11
CKS112
CKS111
CKS110
CKP11
DAP11
Specification of data transmission/reception timing
Type
0
0
D7
D6
D5
D4
D3
D2
D1
D0
SCK11
SO11
SI11 input timing
1
0
1
D7
D6
D5
D4
D3
D2
D1
D0
SCK11
SO11
SI11 input timing
2
1
0
D7
D6
D5
D4
D3
D2
D1
D0
SCK11
SO11
SI11 input timing
3
1
1
D7
D6
D5
D4
D3
D2
D1
D0
SCK11
SO11
SI11 input timing
4
CKS112
CKS111
CKS110
CSI11 serial clock selection
Note
Mode
0 0 0
f
X
/2 (5 MHz)
Master mode
0 0 1
f
X
/2
2
(2.5 MHz)
Master mode
0 1 0
f
X
/2
3
(1.25 MHz)
Master mode
0 1 1
f
X
/2
4
(625 kHz)
Master mode
1 0 0
f
X
/2
5
(312.5 kHz)
Master mode
1 0 1
f
X
/2
6
(156.25 kHz)
Master mode
1 1 0
f
X
/2
7
(78.13 kHz)
Master mode
1
1
1
External clock input to SCK11
Slave mode
Содержание MuPD78F0132H
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