Rev. 1.00, 05/04, page 236 of 544
ExRxD
*
/RxD
ExTxD
*
/TxD
ExSCK
*
/SCK
Clock
φ
φ
/4
φ
/16
φ
/64
TEI
TXI
RXI
ERI
SCMR
SSR
SCR
SMR
Transmission/
reception control
Baud rate
generator
BRR
Module data bus
RDR
TSR
RSR
Parity generation
Parity check
[Legend]
RSR:
Receive shift register
RDR:
Receive data register
TSR:
Transmit shift register
TDR: Transmit
data
register
SMR:
Serial mode register
TDR
Bus interface
Internal data bus
External clock
SCR:
Serial control register
SSR:
Serial status register
SCMR: Smart card mode register
BRR:
Bit rate register
Note:
*
The program development tool (emulator) does not support this function.
Figure 12.1 Block Diagram of SCI
12.2 Input/Output
Pins
Table 12.1 shows the input/output pins for each SCI channel.
Table 12.1 Pin Configuration
Channel Symbol
*
1
Input/Output
Function
SCK1/
ExSCK1
*
2
Input/Output Channel
1 clock input/output
RxD1/
ExRxD1
*
2
Input
Channel 1 receive data input
1
TxD1/
ExTxD1
*
2
Output
Channel 1 transmit data output
Notes:
1. Pin names SCK, RxD, and TxD are used in the text for all channels, omitting the
channel designation.
2. The program development tool (emulator) does not support this function.
Содержание H8S/2111B
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