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Bit Rate Register (BRR_1)
This 8-bit register is used to adjust the bit rate. The SCI has independent baud rate generators
for the individual channels, allowing different bit rates to be set for each. See the hardware
manual for details on setting values, execution rate relationships, etc.
Table 2 shows the function allocations for the task example.
Table 2
Function Allocations
Function
Classification
TXD1
Pin
RXD1
Pin
SMR_1
SCI1
SCR_1
SCI1
SSR_1
SCI1
SDCR_1
SCI1
BRR_1
SCI1
TSR_1
SCI1
TDR_1
SCI1
RSR_1
SCI1
RDR_1
SCI1
REJ06B0357-0100O/Rev.1.00
Asynchronous Serial Data Transmission/Reception
Function Allocation
Channel 1 transmit data output pin
Channel 1 transmit data input pin
Sets communication format to asynchronous mode
Enables transmit operation
Status flag showing SCI1 operation status
Specifies LSB-first
Sets communication bit rate
Register for transmitting serial data
Register for storing transmit data
Register for receiving serial data
Register for storing receive data
March 2004
SH7145F
Page 5 of 17
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