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| 型号： | MCZ33800EK |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 25/39页 |
| 文件大小： | 0K |
| 描述： | IC ENGINE CTRL SW/DVR 54-SOIC |
| 标准包装： | 26 |
| 应用： | 自动 |
| 电流 - 电源： | 10mA |
| 电源电压： | 5 V ~ 36 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 54-BSSOP（0.295"，7.50mm 宽）裸露焊盘 |
| 供应商设备封装： | 54-SOICW-EP |
| 包装： | 管件 |
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FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
Table 12. OSS SPI Control Commands and Response
Command
Control Address
Command Bits
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
OSS ON/OFF Command
0
0
0
0
1
X
X
X
0
0
0
0
0
0
0
0
0 = off, 1 = on
Open Load Current Enable
0
0
0
1
0
X
X
X
0
0
0
0
0
0
0
0
0 = disable, 1 = enable
Shutdown / Retry from V PWR Over
0
0
0
1
1
X
X
X
1
1
1
1
1
1
1
1
Voltage
0 = shutdown, 1 = retry
Shutdown / Retry from Short
0
0
1
0
0
X
X
X
1
1
1
1
1
1
1
1
Circuit
0 = shutdown, 1 = retry
TLim Command
0
0
1
0
1
X
X
X
1
1
1
1
1
1
1
1
0 = disable, 1 = enable
Fault Timer Command
0
0
1
1
0
X
X
X
1
1
1
1
1
1
1
1
0 = Fault Timer Disabled
1 = Fault Timer Enabled
Parallel
0
0
1
1
1
X
X
X
0
0
0
0
0
0
0
0
Outputs(7&8,5&6,3&4,1&2)
Output Output Output Output P7 en P5 en P3 en P1 en
Parallel Input Pin Enable
7&8
5&6
3&4
1&2
0 = Individual Control, PX enabled
1 = Parallel Control, PX disabled
AND/OR Control
0
1
0
0
0
X
X
X
0
0
0
0
0
0
0
0
0 = PX Pin OR with SPI
1 = PX Pin AND with SPI
Next SO Response (Message 1) OvrVlt Reset Fault Fault Fault Fault Fault Fault Fault Fault Fault Fault Fault Fault Fault Fault
0 = No Fault, 1 = Fault
,TLim
or
Statu Statu Statu Statu Statu Statu Statu Statu Statu Statu Statu Statu Statu Statu
sPW sPW sPW sPW sPW sPW sOUT sOUT sOUT sOUT sOUT sOUT sOUT sOUT
CAL
M6
M5
M4
M3
M2
M1
8
7
6
5
4
3
2
1
Flt
ON /OFF CONTROL COMMAND
To program the 8 outputs of the 33800 ON or OFF, a 16-
bit serial stream of data is entered into the SI pin. The first 8-
bits of the control word are used to identify the on / off
command and the remaining 8-bits are used to turn ON or
OFF the specific output driver. When commanding an output
ON or OFF, the Most Significant Bit (MSB) is sent and
received first. Bit 7 corresponds to output 8 down to bit 0
which corresponds to output 1.
OPEN LOAD CURRENT ENABLE COMMAND
The Open Load Enable Command is provided to enable or
disable the open load detect pull-down current. This feature
allows the device to be used in LED applications. On power
up reset (POR) or the RESET command the pull-down
current sources are disabled. To enable the open load
current source, the user must program the Open Load
Current Disable Control register with logic[1]. Open load
faults may not be reported with the pull-down current source
disabled.
OVER-VOLTAGE SHUTDOWN/RETRY COMMAND
The Over Voltage Shutdown/Retry Command allows the
user to select the fault strategy for the outputs. The over-
voltage control bit sets the operation of the outputs when
returning from over-voltage. Setting the over-voltage bit to
logic[0] will force all outputs to remain OFF when V PWR
returns to normal level. Setting the over-voltage bit to logic[1]
will command outputs to resume their previous state when
V PWR returns to normal level.
TLIM COMMAND, TIMER COMMAND
The TLim and Timer commands are used to enhance the
short circuit protection strategy of the Octal Serial Switch
output drivers.
The Timer protection scheme uses a low duty cycle in the
event of a short circuit. The TLim protection circuit uses the
33800
Analog Integrated Circuit Device Data
Freescale Semiconductor
25
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