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参数资料
型号： MIC2591B-5YTQ
厂商： MICREL INC
元件分类： 电源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP48
封装： LEAD FREE, TQFP-48
文件页数： 17/34页
文件大小： 1920K
代理商： MIC2591B-5YTQ
March 2005
24
M9999-033105
MIC2591B
Micrel
Detailed Register Descriptions
Converter Result Register (RESULT)
8-Bits, Read-Only
Conversion Result Register (RESULT)
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
Voltage or Current Data from ADC
Bit
Function
Operation
D[7:0]
Measured data from ADC
read-only
Power-Up Default Value:
xxxx xxxxb = xxh
Read Command Byte:
0000 0000b = 00h
ADC Control Register (ADC_CNTRL)
8-Bits, Read/Write
ADC Control Register (ADC_CNTRL)
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
read/write
BUSY
Reserved
SEL
PAR
Supply Select
SUP[2:0]
Bit(s)
Function
Operation
BUSY
ADC status
0 = ADC quiescent, 1 = ADC busy
D[6]
Reserved
Always read as zero
D[5]
Reserved
Always read as zero
SEL
A/D Slot Select
Species slot for A/D conversion
0 = Slot A, 1 = Slot B
PAR
Parameter control bit for ADC conversion
1 = Voltage, 0 = Current
SUP[2:0]
Supply select for ADC conversion
000 = No conversion
001 = +3.3V supply
010 = Undened - Do Not Use
011 = +12V supply
100 = Undened - Do Not Use
101 = VAUX supply
Power-Up Default Value:
0000 0000b = 00h
Command_Byte Value (R/W):
0000 0001b = 01h
Conversion Result Register (RESULT)
read-only
Voltage or Current Data from ADC
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
Bit
Function
Operation
Bit
Function
Operation
D[7:0]
Measured data from ADC
read-only
Bit
Function
Operation
D[7:0]
Measured data from ADC
read-only
read/write
BUSY
Reserved
SEL
PAR
Supply Select
SUP[2:0]
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
read/write
BUSY
Reserved
SEL
PAR
Supply Select
SUP[2:0]
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
read/write
BUSY
Reserved
SEL
PAR
Supply Select
SUP[2:0]
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
read/write
BUSY
Reserved
SEL
PAR
Supply Select
SUP[2:0]
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
read/write
BUSY
Reserved
SEL
PAR
Supply Select
SUP[2:0]
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
read/write
BUSY
Reserved
SEL
PAR
Supply Select
SUP[2:0]
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
read/write
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
read/write
Bit(s)
Function
Operation
D[6]
Reserved
Always read as zero
D[5]
Reserved
Always read as zero
SEL
A/D Slot Select
Species slot for A/D conversion
0 = Slot A, 1 = Slot B
PAR
Parameter control bit for ADC conversion
1 = Voltage, 0 = Current
SUP[2:0]
Supply select for ADC conversion
000 = No conversion
001 = +3.3V supply
010 = Undened - Do Not Use
011 = +12V supply
100 = Undened - Do Not Use
101 = VAUX supply
Bit(s)
Function
Operation
BUSY
ADC status
0 = ADC quiescent, 1 = ADC busy
D[6]
Reserved
Always read as zero
D[5]
Reserved
Always read as zero
SEL
A/D Slot Select
Species slot for A/D conversion
0 = Slot A, 1 = Slot B
PAR
Parameter control bit for ADC conversion
1 = Voltage, 0 = Current
SUP[2:0]
Supply select for ADC conversion
000 = No conversion
001 = +3.3V supply
010 = Undened - Do Not Use
011 = +12V supply
100 = Undened - Do Not Use
101 = VAUX supply
Bit(s)
Function
Operation
BUSY
ADC status
0 = ADC quiescent, 1 = ADC busy
D[6]
Reserved
Always read as zero
D[5]
Reserved
Always read as zero
SEL
A/D Slot Select
Species slot for A/D conversion
0 = Slot A, 1 = Slot B
PAR
Parameter control bit for ADC conversion
1 = Voltage, 0 = Current
SUP[2:0]
Supply select for ADC conversion
000 = No conversion
001 = +3.3V supply
010 = Undened - Do Not Use
011 = +12V supply
100 = Undened - Do Not Use
101 = VAUX supply
To operate the ADC, the ADC_CNTRL register must be ac-
cessed with the following parameters:
Selection of which slot will provide the parameter
to be measured (Register Bit D[4])
Choice of whether voltage or current is to be re-
ported (Register Bit D[3])
Selectionofthewhichsupplythatistobemonitored
(Register Bit D[2:0])
Note that this data may all be contained within one write to
the ADC_CNTRL register.
Software must then poll the BUSY bit (D[7]) until it is zero,
or wait for a period of 100ms. At the end of that time, the
RESULT register will contain the results of the conversion.
After reading the RESULT register, a new conversion may
be started.
Power-Up Default Value:
0000 0000
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