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| 型號(hào)： | MC33793DR2 |
| 廠商： | Freescale Semiconductor |
| 文件頁(yè)數(shù)： | 13/27頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC DSI SLAVE FOR R-SENSE 16-SOIC |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 類型： | 分布式系統(tǒng)接口 |
| 輸入類型： | 邏輯 |
| 輸出類型： | 邏輯 |
| 接口： | 并聯(lián) |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-SOIC N |
| 包裝： | 剪切帶 (CT) |
| 其它名稱： | MC33793DR2CT |
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Analog Integrated Circuit Device Data
20
Freescale Semiconductor
33793
FUNCTIONAL DEVICE OPERATION
DSI COMMANDS AND RESPONSES
SET LOGIC OUT COMMAND
The Set Logic Out command sets the Logic Out pin to a logic
high. The compliment to this command is the Clear Logic Out.
The Logic Out is cleared at power-up or following a Clear
command. The format of the Clear Logic Out command is
shown in Table 25.
SET LOGIC OUT RESPONSE
This response message is sent during the next message
following a valid Set Logic Out command to the addressed
device. The response is shown in Table 26. No response is
generated if the command address field was $0.
REVERSE INITIALIZATION
The Reverse Initialization is similar to the Initialization
command and will only work under the condition that it has
not already been initialized. The command may be used
three ways. The first is to initialize a programmable address
device. The second is the first step in assigning a pre-
programmed address. The third is to initialize a pre-
programmed device.
For the first case this command is sent to address zero with
the NV bit set to zero. The command will be received by the
next daisy chain device with its bus switch open. Reception
of this command will assign the device address and the group
number. Reception of this command will also cause the bus
switch to close if BS = 1 and no fault is detected.
For the second case the Initialization command is sent the
same as the first except that the NV bit is set to one.
Reception of the command will assign the device address
and the group number and cause the bus switch to close if BS
= 1 and there are no faults. A Read/Write NVM command
then may be sent to complete the setting of a pre-
programmed address.
A pre-programmed device must be initialized by putting its
address in both PA3:PA0 and A3:A0 fields.
Once a device has received a reverse initialization command,
it will ignore further reverse initialization commands or
initialization commands unless it has received a Clear
command or undergone a power-up reset.
The command format is found in Table 27.
Table 25. Set Logic Out Command Format
Data
Address
Command
CRC
-
A3
A2
A1
A0
1
0
1
X3
X2
X1
X0
Legend
A[3:0] = Address bits. The address of the selected device.
X[3:0] = Cyclic Redundancy Check (CRC). The CRC as calculated by the
master.
Table 26. Set Logic Out Response Format
High Byte
Low Byte
CRC
A3
A2
A1
A0
0
NV
U
LO
BS
IO3
IO2
IO1
IO0
X3
X2
X1
X0
Legend
A[3:0] - Address bits. The slave address.
BS = Bus Switch Position (1=closed)
IO[3:0] = Values at logic I/Os.
LO = Logic out driven level.
NV = Nonvolatile Memory Write. The value of the NV bit in the slave.
U = Undervoltage indicated true by a “1”.
X[3:0] = Cyclic Redundancy Check (CRC). The CRC as calculated by the
slave.
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