參數(shù)資料
型號: MC68HC916X1
廠商: Motorola, Inc.
英文描述: 16-Bit Modular Microcontroller(16位模塊化微控制器)
中文描述: 16位微控制器模塊(16位模塊化微控制器)
文件頁數(shù): 105/172頁
文件大?。?/td> 1035K
代理商: MC68HC916X1
MC68HC916X1
MC68HC916X1TS/D
MOTOROLA
105
DDRQS determines the direction of the TXD pin only when the SCI transmitter is disabled. When
the SCI transmitter is enabled, the TXD pin is an output.
7.4 QSPI Submodule
The QSPI submodule communicates with external devices through a synchronous serial bus. The
QSPI is fully compatible with the serial peripheral interface (SPI) systems found on other Motorola
products.
Figure 20
shows a block diagram of the QSPI.
1. PQS2 is a digital I/O pin unless the SPI is enabled (SPE in SPCR1 set), in which case it becomes
SPI serial clock SCK.
2. PQS7 is a digital I/O pin unless the SCI transmitter is enabled (TE in SCCR1 = 1), in which case
it becomes SCI serial output TXD.
Table 56 Effect of DDRQS on QSM Pin Function
QSM Pin
MISO
Mode
Master
DDRQS Bit
DDQS0
Bit State
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
X
NA
Pin Function
Serial Data Input to QSPI
Disables Data Input
Disables Data Output
Serial Data Output from QSPI
Disables Data Output
Serial Data Output from QSPI
Serial Data Input to QSPI
Disables Data Input
Disables Clock Output
Clock Output from QSPI
Clock Input to QSPI
Disables Clock Input
Assertion Causes Mode Fault
Chip-Select Output
QSPI Slave Select Input
Disables Select Input
Disables Chip-Select Output
Chip-Select Output
Inactive
Inactive
Serial Data Output from SCI
Serial Data Input to SCI
Slave
MOSI
Master
DDQS1
Slave
SCK
1
Master
DDQS2
Slave
PCS0/SS
Master
DDQS3
Slave
PCS[3:1]
Master
DDQS[4:6]
Slave
TXD
2
RXD
Transmit
Receive
DDQS7
None
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