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HD6417751 Datasheet, PDF (676/1105 Pages) Renesas Technology Corp – SuperH RISC engine
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16.1.3 Pin Configuration
Table 16.1 shows the SCIF pin configuration.
Table 16.1 SCIF Pins
Pin Name
Abbreviation
I/O
Function
Serial clock pin
MD0/SCK2
I/O
Clock input/output
Receive data pin
MD2/RxD2
Input
Receive data input
Transmit data pin
MD1/TxD2
Output Transmit data output
Modem control pin MD7/%$
I/O
Transmission enabled
Modem control pin MD8/#%$
I/O
Transmission request
Note:
These pins function as the MD0, MD1, MD2, MD7, and MD8 mode input pins after a power-
on reset. These pins are made to function as serial pins by performing SCIF operation
settings with the TE, RE, CKE1, and CKE0 bits in SCSCR2 and the MCE bit in SCFCR2.
Break state transmission and detection can be set in the SCIF’s SCSPTR2 register.
16.1.4 Register Configuration
The SCIF has the internal registers shown in table 16.2. These registers are used to specify the
data format and bit rate, and to perform transmitter/receiver control.
Table 16.2 SCIF Registers
Name
Abbrevia-
tion
R/W
Initial
Value
P4
Address
Area 7
Address
Access
Size
Serial mode register
SCSMR2 R/W H'0000 H'FFE80000 H'IFE80000 16
Bit rate register
SCBRR2 R/W H'FF
H'FFE80004 H'IFE80004 8
Serial control register
SCSCR2 R/W H'0000 H'FFE80008 H'IFE80008 16
Transmit FIFO data register SCFTDR2 W
Undefined H'FFE8000C H'IFE8000C 8
Serial status register
SCFSR2 R/(W)*1 H'0060 H'FFE80010 H'IFE80010 16
Receive FIFO data register SCFRDR2 R
Undefined H'FFE80014 H'IFE80014 8
FIFO control register
SCFCR2 R/W H'0000 H'FFE80018 H'IFE80018 16
FIFO data count register
Serial port register
Line status register
SCFDR2 R
H'0000
SCSPTR2 R/W H'0000*2
SCLSR2 R/(W)*3 H'0000
H'FFE8001C H'IFE8001C 16
H'FFE80020 H'IFE80020 16
H'FFE80024 H'IFE80024 16
Notes: *1 Only 0 can be written, to clear flags. Bits 15 to 8, 3, and 2 are read-only, and cannot be
modified.
*2 The value of bits 6, 4, 2, and 0 is undefined.
*3 Only 0 can be written, to clear flags. Bits 15 to 1 are read-only, and cannot be modified.
Rev. 3.0, 04/02, page 636 of 1064
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