19 SPI
244
EPSON
S1C17001 TECHNICAL MANUAL
0x4322: SPI Transmit Data Register (SPI_TXD)
Register name Address
Bit
Name
Function
Setting
Init. R/W
Remarks
SPI Transmit
Data Register
(SPI_TXD)
0x4322
(16 bits)
D15–8
–
reserved
–
–
–
0 when being read.
D7–0
SPTDB[7:0]
SPI transmit data buffer
SPTDB7 = MSB
SPTDB0 = LSB
0x0 to 0xff
0x0
R/W
D[15:8] Reserved
D[7:0]
SPTDB[7:0]: SPI Transmit Data Buffer Bits
Set the transmission data to be written to the transmit data buffer. (Default: 0x0)
In Master mode, transmission is started by writing data to this register. In Slave mode, the contents of
this register are sent to the shift register and transmission begins when the clock is input from the mas-
ter.
SPTBE (D0/SPI_ST register) is set to 1 (empty) as soon as data written to this register has been trans-
ferred to the shift register. A transmit buffer empty interrupt is generated at the same time. The subse-
quent transmit data can then be written, even while data is being transmitted.
Serial converted data is output from the SDO pin with MSB leading, with the bit set to 1 as High level
and the bit set to 0 as Low level.
Содержание S1C17001
Страница 1: ...Technical Manual S1C17001 CMOS 16 BIT SINGLE CHIP MICROCONTROLLER ...
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Страница 33: ...4 POWER SUPPLY VOLTAGE 24 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Страница 63: ...6 INITERRUPT CONTROLLER 54 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Страница 87: ...8 CLOCK GENERATOR CLG 78 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Страница 91: ...9 PRESCALER PSC 82 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
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Страница 185: ...14 8 BIT OSC1 TIMER T8OSC1 176 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Страница 211: ...16 STOPWATCH TIMER SWT 202 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Страница 219: ...17 WATCHDOG TIMER WDT 210 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Страница 241: ...18 UART 232 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
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