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33813 데이터시트(PDF) 43 Page - Freescale Semiconductor, Inc

부품명 33813
상세설명  One Cylinder Small Engine Control IC
PDF  54 Pages
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제조업체  FREESCALE [Freescale Semiconductor, Inc]
홈페이지  http://www.freescale.com
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33813 데이터시트(HTML) 43 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
Freescale Semiconductor
43
33813
Table 21 defines the commands and default state of the internal registers at POR. SPI commands may be sent to the device at
any time while the device is in the Normal state.
Messages sent are acted upon on the rising edge of the CSB input.
Bit value returned equals bit value sent for this command
5.3.10 SPI Commands
There are seven SPI commands that can be issued by the MCU to:
• Do a SPI Check verification
• Read the contents of the SPI configuration registers
• Write the contents of the SPI configuration registers
• Read the contents of the SPI status registers
• Write the contents of the SPI status registers
• Read the contents of the SPI control registers
• Write the contents of the SPI control registers
5.3.10.1 SPI Registers
The SPI interface consists of a block of four 8-bit read/write registers.
There are three types of SPI registers:
• Configuration Registers - These registers allow the MCU to configure the various parameters and options for the various
functional blocks.
• Control Registers - These registers are used to command the outputs on and off and set the PWM duty cycle values.
• Status Registers - These registers report back faults and other conditions of the various functional blocks.
The following acronyms are use in the SPI table:
• OC = over-current, could be short to battery (SB)
• OV = over-voltage
• OT = over-temperature
• OL = open load
• SG = short to ground
• PWM = pulse width modulation
Table 21. SPI Command Messages
Command
Control Address Bits
Data Bits
hex
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
SPI Check
0
0
0
0
0
X*
X*
X*
X*
X*
X*
X*
X*
X*
X*
X*
X*
Read Configuration
Register
1
0
0
0
1
<0000>
Internal Register Address
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
Write Configuration
Register
2
0
0
1
0
<0000>
Internal Register Address
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
Read Status
Register
3
0
0
1
1
<0000>
Internal Register Address
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
Write Status
Register
4
0
1
0
0
<0000>
Internal Register Address
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
Read Control
Register
5
0
1
0
1
<0000>
Internal Register Address
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
Write Control
Register
6
0
1
1
0
<0000>
Internal Register Address
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
SPI Check
Response
7
0
1
1
1
X*
X*
X*
X*
X*
X*
X*
X*
X*
X*
X*
X*



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