参数资料
型号: TMP86C847UG
厂商: Toshiba Corporation
英文描述: Zener Diode; Application: General; Pd (mW): 500; Vz (V): 15.7 to 16.5; Condition Iz at Vz (mA): 5; C (pF) max: -; Condition VR at C (V):   ESD (kV) min: -; Package: DO-35
中文描述: 8位微控制器
文件页数: 118/160页
文件大小: 1541K
代理商: TMP86C847UG
Page 110
10. Synchronous Serial Interface (SIO)
10.3 Function
TMP86C847UG
Figure 10-9 Example of Transmit Error Processingme
10.3.3.2 Receive mode
The receive mode is selected by writing “01B” to SIOCR<SIOM>.
(1)
Starting the receive operation
Receive mode is selected by setting “01” to SIOCR1<SIOM>. Serial clock is selected by using
SIOCR1<SCK>. Transfer direction is selected by using SIOCR1<SIODIR>.
After SIOCR1<SIOS> is set to “1”, SIOSR<SIOF> is set synchronously to “1” the falling edge of
SCK
pin.
Synchronizing with the
SCK
pin's rising edge, the data is received sequentially from SI pin with the
direction of the bit specified by SBIDIR<SIODIR>.
SIOSR<SEF> is kept in high level, between the first clock falling edge of
SCK
pin and eighth
clock falling edge.
When 8-bit data is received, the data is transferred to SIORDB from shift register. INTSIO inter-
rupt request is generated and SIOSR<RXF> is set to “1”
Note: In internal clock operation, when the SIOCR1<SIOS> is set to "1", the serial clock is generated
from
SCK
pin after maximum 1-cycle of serial clock frequency.
(2)
During the receive operation
The SIOSR<RXF> is cleared to “0” by reading a data from SIORDB.
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 SIORDB. Then, receive operation is restarted after maximum 1-cycle of serial
clock.
In external clock operation, after SIOSR<RXF> is set to “1”, the received data must be read from
SIORDB, 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
SIOCR1<SIOS>
SIOSR<SIOF>
SIOSR<SEF>
SCK
pin
SO pin
SIOSR<TXF>
SIOSR<TXERR>
INTSIO
interrupt
request
SIOTDB
SIOCR1
<SIOINH>
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