340
Chapter 12
Serial Interface Function
Preliminary User’s Manual U14913EE1V0UM00
(12) Clocked serial interface initial transmission buffer registers L0, L1 (SOTBFL0, SOTBFL1)
The SOTBFLn register is an 8-bit buffer register that stores initial transmit data in the repeat transfer
mode.
(13) Selector
The selector selects the serial clock to be used.
(14) Serial clock control circuit
Controls the serial clock supply to the shift register. Also controls the clock output to the SCKn pin
when the internal clock is used.
(15) Serial clock counter
Counts the serial clock output or input during transmission/reception operation, and checks whether
8-bit data transmission/reception has been performed.
(16) Interrupt control circuit
Controls the interrupt request timing.
Figure 12-21: Block Diagram of Clocked Serial Interfaces
Remark:
n = 0, 1
Selector
Transmission control
SO selection
SO latch
Transmit
data buffer register
(SOTBn/SOTBLn)
Receive data buffer register
(SIRBn/SIRBLn)
Shift register
(SIOn/SIOLn)
Initial transmit
data buffer register
(SOTBFn/SOTBFLn)
Interrupt
control
circuit
Clock start/stop control
&
clock phase control
Serial clock control circuit
SCKn
INTCSIn
SOn
SIn
Control signal
Transmission data control
/2
6
/2
5
/2
4
/2
3
/2
2
BRG0
SCKn
BRG1
f
CPU
f
CPU
f
CPU
f
CPU
f
CPU
Summary of Contents for V850E/CA1 ATOMIC
Page 6: ...6 Preliminary User s Manual U14913EE1V0UM00 MEMO ...
Page 52: ...52 Preliminary User s Manual U14913EE1V0UM00 MEMO ...
Page 144: ...144 Preliminary User s Manual U14913EE1V0UM00 MEMO ...
Page 162: ...162 Preliminary User s Manual U14913EE1V0UM00 MEMO ...
Page 224: ...224 Preliminary User s Manual U14913EE1V0UM00 MEMO ...
Page 308: ...308 Preliminary User s Manual U14913EE1V0UM00 MEMO ...
Page 512: ...512 Preliminary User s Manual U14913EE1V0UM00 MEMO ...
Page 564: ...564 Preliminary User s Manual U14913EE1V0UM00 MEMO ...
Page 566: ...566 Preliminary User s Manual U14913EE1V0UM00 MEMO ...
Page 584: ...584 Preliminary User s Manual U14913EE1V0UM00 MEMO ...