參數(shù)資料
型號(hào)： MC33793
廠商： Motorola, Inc.
英文描述： Distributed System Interface (DSI) Sensor Interface
中文描述： 分布式系統(tǒng)接口（DSI）傳感器接口
文件頁(yè)數(shù)： 17/24頁(yè)
文件大小： 640K
代理商： MC33793
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
33793
17
I/O Control Command
This register controls the I/O ports. When the “DR” bits are
set, the corresponding I/O is enabled as an output. The “L” bit
settings control the level of the corresponding I/O if it is enabled
as an output. The format of this command is shown in
Table 11
.
I/O Control Response
The response indicates which I/O has been configured as
outputs and their current values.
The values returned will be the values programmed. The
values at the pins will not be the ones that were programmed if
the pin has been forced to the opposite state. The response
format is shown in
Table 12
. No response is generated if the
command address field was $0.
Request ID Command
This command will cause the device ID information to be
read from internal storage and returned to the master during the
response to the next message. The command format is found
in
Table 13
.
Table 11. I/O Control Command Format
Data
Address
Command
CRC
L3
L2
L1
L0
DR3
DR2
DR1
DR0
A3
A2
A1
A0
0
0
1
1
X3
X2
X1
X0
Legend
A[3:0] = Address bits.
DR[3:0] = I/O direction bits. 1 = Output. All bits are set to “0”
by reset/clear.
L[3:0] = Level to output on I/O if configured as output. All bits are set
to “0” by reset/clear
X[3:0] = Cyclic Redundancy Check (CRC). The CRC as calculated
by the master.
Table 12. I/O Control Response Format
High Byte
Low Byte
CRC
A3
A2
A1
A0
0
0
0
0
L3
L2
L1
L0
DR3
DR2
DR1
DR0
X3
X2
X1
X0
Legend
A[3:0] = Address bits.
DR[3:0] = I/O enabled as outputs (1 = enabled as output).
L[3:0] = Programmed values.
X[3:0] = Cyclic Redundancy Check (CRC). The CRC as calculated by
the slave.
Table 13. Request ID Command Format
Data
Address
Command
CRC
–
–
–
–
–
–
–
–
A3
A2
A1
A0
0
1
0
0
X3
X2
X1
X0
Legend
A[3:0] = Address bits. The address of the selected device.
An address value of “0000” is ignored by all devices.
X[3:0] = Cyclic Redundancy Check (CRC). The CRC as calculated
by the master.
F
Freescale Semiconductor, Inc.
Go to: www.freescale.com
n
.
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