Renesas H8S/2100 Series, Hardware Manual

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Section 15 Serial Communication Interface (SCI)
Rev. 1.00 Apr. 28, 2008 Page 406 of 994
REJ09B0452-0100
15.3 Register Descriptions
The SCI has the following registers for each channel. Some bits in the serial mode register (SMR),
serial status register (SSR), and serial control register (SCR) have different functions in different
modes

normal serial communication interface mode and smart card interface mode; therefore,
the bits are described separately for each mode in the corresponding register sections.
Table 15.2 Register Configuration
Channel Register Name Abbreviation R/W
Initial
Value Address Data Bus
Width
Serial mode register_1 SMR_1 R/W H'00 H'FF88 8
Bit rate register_1 BRR_1 R/W H'FF H'FF89 8
Serial control register_1 SCR_1 R/W H'00 H'FF8A 8
Transmit data register_1 TDR_1 R/W H'FF H'FF8B 8
Serial status register_1 SSR_1 R/W H'84 H'FF8C 8
Receive data register_1 RDR_1 R H'00 H'FF8D 8
Channel 0
Smart card mode register_1 SCMR_1 R/W H'F2 H'FF8E 8
Serial mode register_2 SMR_2 R/W H'00 H'FFA0 8
Bit rate register_2 BRR_2 R/W H'FF H'FFA1 8
Serial control register_2 SCR_2 R/W H'00 H'FFA2 8
Transmit data register_2 TDR_2 R/W H'FF H'FFA3 8
Serial status register_2 SSR_2 R/W H'84 H'FFA4 8
Receive data register_2 RDR_2 R H'00 H'FFA5 8
Channel 1
Smart card mode register_2 SCMR_2 R/W H'F2 H'FFA6 8