HD6433308 HITACHI [Hitachi Semiconductor], HD6433308 Datasheet - Page 193

• Manufacturer Part Number: HD6433308
• Description: Hitachi Single-Chip MicroComputer
• Manufacturer: HITACHI [Hitachi Semiconductor]

9.1.2 Block Diagram
9.1.3 Input and Output Pins
Table 9-1 lists the input and output pins used by the SCI module.
Table 9-1. SCI Input/Output Pins
Name
Asynchronous serial clock
Asynchronous receive data
Asynchronous transmit data
Synchronous serial clock
Synchronous receive data
Synchronous transmit data
ARxD/
CRxD
ATxD/
CTxD
ASCK/
CSCK
RSR:
RDR:
TSR:
TDR:
SMR:
SCR:
SSR:
BRR:
Figure 9-1. Block Diagram of Serial Communication Interface
Receive Shift Register (8 bits)
Receive Data Register (8 bits)
Transmit Shift Register (8 bits)
Transmit Data Register (8 bits)
Serial Mode Register (8 bits)
Serial Control Register (8 bits)
Serial Status Register (8 bits)
Bit Rate Register (8 bits)
RSR
RDR
Abbreviation
ASCK
ARxD
ATxD
CSCK
CRxD
CTxD
Parity check
Parity
generate
TDR
TSR
Module data bus
180
Communi-
cation
control
I/O
Input/output
Input
Output
Input/output
Input
Output
SSR
SCR
SMR
Clock
Baud rate
generator
BRR
Function
Serial clock input and output.
Receive data input.
Transmit data output.
Serial clock input and output.
Receive data input.
Transmit data output.
External clock source
Interrupt signals
TXI
RXI
ERI
Ø
Ø/4
Ø/16
Ø/64
Internal
data bus
Internal
clock