SH7706 Datasheet, PDF (415/749 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family/SH7700 Series

Section 14 Serial Communication Interface (SCI)
14.2 Input/Output Pin
The SCI has the serial pins summarized in table 14.1.
Table 14.1 SCI Pins
Pin Name
Abbreviation I/O
Function
Serial clock pin
SCK0
I/O
Clock I/O
Receive data pin
RxD0
Input
Receive data input
Transmit data pin
TxD0
Output
Transmit data output
Note: They are made to function as serial pins by performing SCI operation settings with the TE,
RE, CKEI, and CKEO bits in SCSCR and the C/A bit in SCSMR. Break state transmission
and detection can be performed by means of the SCI's SCPDR.
14.3 Register Description
The SCI has the registers listed below. These registers select the communication mode
(asynchronous or clock synchronous), specify the data format and bit rate, and control the
transmitter and receiver sections.
SCI has the registers listed below. Refer to section 23, List of Registers, for more details of the
addresses and access sizes.
• Serial mode register (SCSMR)
• Bit rate register (SCBRR)
• Serial control register (SCSCR)
• Transmit data register (SCTDR)
• Serial status register (SCSSR)
• Receive data register (SCRDR)
• SC port control register (SCPCR)
• SC port data register (SCPDR)
Rev. 5.00 May 29, 2006 page 367 of 698
REJ09B0146-0500