Page 171
T
5CL8
Figure 14-12 Example of Receive Error Processing
Note: If receive error is not corrected, an interrupt request does not generate after the error occurs.
14.3.3.3 Transmit/receive mode
The transmit/receive mode are selected by writing “10” to SIO1CR<SIOM>.
(1) Starting the transmit/receive operation
Transmit/receive mode is selected by writing “10B” to SIO1CR<SIOM>. Serial clock is selected
by using SIO1CR<SCK>. Transfer direction is selected by using SIO1CR<SIODIR>.
When a transmit data is written to the transmit buffer register (SIO1TDB), SIO1SR<TXF> is
cleared to “0”.
After SIO1CR<SIOS> is set to “1”, SIO1SR<SIOF> is set synchronously to the falling edge of
SCK1
pin.
The data is transferred sequentially starting from SO1 pin with the direction of the bit specified by
SIO1CR<SIODIR>, synchronizing with the
SCK1
pin's falling edge. And receiving operation also
starts with the direction of the bit specified by SIO1CR<SIODIR>, synchronizing with the
SCK1
pin's rising edge.
SIO1SR<SEF> is kept in high level between the first clock falling edge of
SCK1
pin and eighth
clock falling edge.
SIO1SR<TXF> is set to “1” at the rising edge of
SCK1
pin after the data written to the SIO1TDB is
transferred to shift register. When 8-bit data has been received, the received data is transferred to
SIO1RDB from shift register, then the INTSIO1 interrupt request occurs, synchronizing with setting
SIO1SR<RXF> to “1”.
Note 1: In internal clock operation, when the SIO1CR<SIOS> is set to "1", SIO1TDB is transferred to
shift register after maximum 1-cycle of serial clock frequency, then a serial clock is output from
SCK1
pin.
Note 2: In external clock operation, when the falling edge is input from
SCK1
pin after SIO1CR<SIOS> is
set to "1", SIO1TDB is transferred to shift register immediately. When the rising edge is input
from
SCK1
pin, receive operation also starts.
Writing transmit
data B
Writing transmit
data A
B
A7 A6
A
A5 A4 A3 A2 A1 A0 B7 B6 B5 B4 B3 B2 B1 B0 C7 C6 C5 C4 C3 C2 C1 C0
Start shift
operation
Start shift
operation
Start shift
operation
Write a "0" after reading the
received data when a receive
error occurs.
SIO1CR<SIOS>
SIO1SR<SEF>
SCK1
pin
SIO1SR<RXERR>
INTSIO1
interrupt
request
SIO1RDB
SI1 pin
SIO1SR<SIOF>
SIO1SR<RXF>
Содержание CEM2100/00
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Страница 19: ...PCB LAYOUT SD BOARD TOP SIDE VIEW ...
Страница 20: ...20 PCB LAYOUT CD CONNECTOR TOP SIDE VIEW ...
Страница 21: ...PCB LAYOUT ISO BOARD BOTTOM SIDE VIEW 21 ...
Страница 22: ...22 SET EXPLODER VIEW DRAWING ...
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Страница 113: ...Revision History Date Revision 2008 7 31 1 First Release ...
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Страница 126: ...Page 4 1 3 Block Diagram T5CL8 1 3 Block Diagram Figure 1 2 Block Diagram ...
Страница 130: ...Page 8 1 4 Pin Names and Functions T5CL8 ...
Страница 155: ...Page 33 T5CL8 ...
Страница 156: ...Page 34 2 Operational Description 2 3 Reset Circuit T5CL8 ...
Страница 186: ...Page 64 5 I O Ports 5 8 Port P7 P77 to P70 T5CL8 ...
Страница 194: ...Page 72 6 Watchdog Timer WDT 6 3 Address Trap T5CL8 ...
Страница 214: ...Page 92 8 16 Bit TimerCounter 1 TC1 8 3 Function T5CL8 ...
Страница 270: ...Page 148 12 Asynchronous Serial interface UART1 12 9 Status Flag T5CL8 ...
Страница 280: ...Page 158 13 Asynchronous Serial interface UART2 13 9 Status Flag T5CL8 ...
Страница 332: ...Page 210 16 Serial Bus Interface I2C Bus Ver D SBI 16 6 Data Transfer of I2C Bus T5CL8 ...
Страница 342: ...Page 220 17 10 bit AD Converter ADC 17 6 Precautions about AD Converter T5CL8 ...
Страница 354: ...Page 232 19 Flash Memory 19 4 Access to the Flash Memory Area T5CL8 ...
Страница 388: ...Page 266 21 Input Output Circuit 21 2 Input Output Ports T5CL8 ...
Страница 397: ...Page 275 T5CL8 23 Package Dimensions LQFP64 P 1010 0 50D Rev 01 Unit mm ...
Страница 398: ...Page 276 23 Package Dimensions T5CL8 ...
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Страница 428: ...TC94B14MFG 2010 01 12 28 Package LQFP80 P 1212 0 50F Weight 0 6 g Typical ...