HD6473228P10V Datasheet, PDF (177/301 Pages) Renesas Technology Corp – Regarding the change of names mentioned in the document, such as Hitachi Electric and Hitachi XX, to Renesas Technology Corp

9.1.2 Block Diagram
Module data bus
Internal
data bus
RDR
TDR
RxD
RSR
TSR
TxD
Parity
generate
Parity check
SCK
RSR:
RDR:
TSR:
TDR:
SMR:
SCR:
SSR:
BRR:
Receive Shift Register
Receive Data Register
Transmit Shift Register
Transmit Data Register
Serial Mode Register
Serial Control Register
Serial Status Register
Bit Rate Register
SSR
SCR
SMR
Communi-
cation
control
BRR
Baud rate
generator
Clock
Ø Internal
Ø/4 clock
Ø/16 sources
Ø/64
External clock source
TXI
RXI
ERI
Interrupt signals
Figure 9-1. Block Diagram of Serial Communication Interface
9.1.3 Input and Output Pins
Figure 9-1
Table 9-1 lists the input and output pins used by the SCI module.
Table 9-1. SCI Input/Output Pins
Name
Serial clock
Serial receive data
Serial transmit data
Abbreviation
Channel 0 Channel 1
SCK0
SCK1
RxD0
RxD1
TxD0
TxD1
I/O
Input/output
Input
Output
Function
Serial clock input and output.
Receive data input.
Transmit data output.
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