Toshiba TC9349AFG Manual page 78

Cmos digital integrated circuit silicon monolithic
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SOS bit (Output setting for SDIO pin serial output)
This control bit switches the serial data input/output pin (SDIO pin) between data output and input. Set this bit to
"0" for serial data input or set to "1" for serial data output.
In the 3-wired mode, switching between input and output is executed when the instruction to this bit is executed.
In the 2-wired mode, switching between input and output is updated and determined under the following conditions
after this bit is specified.
Output setting for SDIO pin serial output
Update timing of SDIO pin input/output switching in the 2-wired mode
Stop condition
Falling edge of the shift clock when the communication is started
Falling edge of the serial clock after ACK input/output
SDIO input/output switching timing in the 2-wired mode (master mode)
線式設定時のSDIO入出力切り替えタイミング マスター設定時
Serial clock
シリアルクロック
(SCK)
( SCK)
Serial input/output
シリアル入出力
(SDIO)
( SDIO)
TSTA1="1"実行
TSTA1="1" execution
Execution of
命令の実行
instruction
SOSビット設定
SOS bit setting
SDIO入出力更新タイミング
SDIO input/output update timing
線式設定時のSDIO入出力切り替えタイミング スレーブ設定時
SDIO input/output switching timing in the 2-wired mode (slave mode)
Serial clock
シリアルクロック
(SCK)
( SCK)
Serial input/output
シリアル入出力
(SDIO)
( SDIO)
Execution of
命令の実行
instruction
SOSビット設定
SOS bit setting
SDIO入出力更新タイミング
SDIO input/output update timing
3 線式設定時のSDIO入出力切り替えタイミング
SDIO input/output switching timing in the 3-wired mode
シリアルクロック
Serial clock
( SCK)
(SCK)
シリアル入出力
Serial input/output
( SDIO)
(SDIO)
Execution of
命令の実行
instruction
0
SOS="1"
Note:
If the SOS bit is set in the 3-wired mode, the input/output of the SDIO pin will be updated when
the instruction is executed.
Note:
Always set the SOS bit to "1" when UART is selected.
Note:
This bit is reset to "0" after a system reset.
(SOS bit)
ACK
TSTA2="1" execution
TSTA2="1"実行
SOSビット設定
SOS bit setting
SDIO入出力更新タイミング
SDIO input/output update timing
ACK
SOSビット設定
SOS bit setting
SDIO入出力更新タイミング
SDIO input/output update timing
入力
Input
1
SOS="0"
78
0: SDIO pin input setting
1: SDIO pin output setting
SOSビット設定
SOS bit setting
SDIO入出力更新タイミング
SDIO input/output update timing
SOSビット設定
SOS bit setting
SDIO入出力更新タイミング
SDIO input/output update timing
出力
Output
SOS="1"
TC9349AFG
ACK
STP="1" execution
STP="1"実行
ACK
入力
Input
0
2006-02-24

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