HD64F2145 Datasheet, PDF (381/829 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

15.2 Input/Output Pins
Table 15.1 shows the input/output pins for each SCI channel.
Table 15.1 Pin Configuration
Channel Symbol*
Input/Output Function
0
SCK0
Input/Output Channel 0 clock input/output
RxD0
Input
Channel 0 receive data input
TxD0
Output
Channel 0 transmit data output
1
SCK1
Input/Output Channel 1 clock input/output
RxD1
Input
Channel 1 receive data input
TxD1
Output
Channel 1 transmit data output
2
SCK2
Input/Output Channel 2 clock input/output
RxD2/IrRxD Input
Channel 2 receive data input (normal/IrDA)
TxD2/IrTxD Output
Channel 2 transmit data output (normal/IrDA)
Note:* Pin names SCK, RxD, and TxD are used in the text for all channels, omitting the channel
designation.
15.3 Register Descriptions
The SCI has the following registers for each channel.
• Receive shift register (RSR)
• Receive data register (RDR)
• Transmit data register (TDR)
• Transmit shift register (TSR)
• Serial mode register (SMR)
• Serial control register (SCR)
• Serial status register (SSR)
• Serial interface mode register (SCMR)
• Bit rate register (BRR)
• Keyboard comparator control register (KBCOMP)
Rev. 2.0, 08/02, page 341 of 788