Rev.6.00 Oct.28.2004 page 467
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REJ09B0138-0600H
14.1.2
Block Diagram
Figure 14-1 shows a block diagram of the SCI.
Bus interface
TDR
RSR
RDR
Module data bus
TSR
SCMR
SSR
SCR
Transmission/
reception control
BRR
Baud rate
generator
Internal
data bus
RxD
TxD
SCK
Parity generation
Parity check
Clock
External clock
ø
ø/4
ø/16
ø/64
TXI
TEI
RXI
ERI
SMR
Legend:
SCMR:
RSR:
RDR:
TSR:
TDR:
SMR:
SCR:
SSR:
BRR:
Smart Card mode register
Receive shift register
Receive data register
Transmit shift register
Transmit data register
Serial mode register
Serial control register
Serial status register
Bit rate register
Figure 14-1 Block Diagram of SCI
14.1.3
Pin Configuration
Table 14-1 shows the serial pins for each SCI channel.
Table 14-1 SCI Pins
Channel
Pin Name
Symbol
I/O
Function
0
Serial clock pin 0
SCK0
I/O
SCI0 clock input/output
Receive data pin 0
RxD0
Input
SCI0 receive data input
Transmit data pin 0
TxD0
Output
SCI0 transmit data output
1
Serial clock pin 1
SCK1
I/O
SCI1 clock input/output
Receive data pin 1
RxD1
Input
SCI1 receive data input
Transmit data pin 1
TxD1
Output
SCI1 transmit data output
2
Serial clock pin 2
SCK2
I/O
SCI2 clock input/output
Receive data pin 2
RxD2
Input
SCI2 receive data input
Transmit data pin 2
TxD2
Output
SCI2 transmit data output
Содержание ZTAT H8S/2357F
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