Page 186
15. Synchronous Serial Interface (SIO2)
15.3 Function
T
5CL8
Figure 15-9 Example of Transmit Error Processingme
15.3.3.2 Receive mode
The receive mode is selected by writing “01B” to SIO2CR<SIOM>.
(1) Starting the receive operation
Receive mode is selected by setting “01” to SIO2CR<SIOM>. Serial clock is selected by using
SIO2CR<SCK>. Transfer direction is selected by using SIO2CR<SIODIR>.
After SIO2CR<SIOS> is set to “1”, SIO2SR<SIOF> is set synchronously to “1” the falling edge of
SCK2
pin.
Synchronizing with the
SCK2
pin's rising edge, the data is received sequentially from SI2 pin with
the direction of the bit specified by SBI2DIR<SIODIR>.
SIO2SR<SEF> is kept in high level, between the first clock falling edge of
SCK2
pin and eighth
clock falling edge.
When 8-bit data is received, the data is transferred to SIO2RDB from shift register. INTSIO2 inter-
rupt request is generated and SIO2SR<RXF> is set to “1”
Note: In internal clock operation, when the SIO2CR<SIOS> is set to "1", the serial clock is generated
from
SCK2
pin after maximum 1-cycle of serial clock frequency.
(2) During the receive operation
The SIO2SR<RXF> is cleared to “0” by reading a data from SIO2RDB.
In the internal clock operation, the serial clock stops to “H” level by an automatic-wait function
when the all of the 8-bit data has been received. Automatic-wait function is released by reading a
received data from SIO2RDB. Then, receive operation is restarted after maximum 1-cycle of serial
clock.
In external clock operation, after SIO2SR<RXF> is set to “1”, the received data must be read from
SIO2RDB, before the next data shift-in operation is finished.
Writing transmit
data B
Writing transmit
data A
Unknown
B
A7 A6
A
A5 A4 A3 A2 A1 A0 B7 B6 B5 B4 B3 B2 B1 B0
Start shift
operation
Start shift
operation
Start shift
operation
SIO2CR<SIOS>
SIO2SR<SIOF>
SIO2SR<SEF>
SCK2
pin
SO2 pin
SIO2SR<TXF>
SIO2SR<TXERR>
INTSIO2
interrupt
request
SIO2TDB
SIO2CR
<SIOINH>
Содержание CEM2100/00
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Страница 18: ...PCB LAYOUT TUNER BOARD BOTTOM SIDE VIEW 18 ...
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 ...
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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 ...