MIC2591B MICREL [Micrel Semiconductor], MIC2591B Datasheet - Page 24

• Manufacturer Part Number: MIC2591B
• Description: Dual-Slot PCI Express Hot-Plug Controller
• Manufacturer: MICREL [Micrel Semiconductor]

Detailed Register Descriptions
Converter Result Register (RESULT)
8-Bits, Read-Only
ADC Control Register (ADC_CNTRL)
8-Bits, Read/Write
To operate the ADC, the ADC_CNTRL register must be ac-
cessed with the following parameters:
March 2005
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
SUP[2:0]
SUP[2:0]
SUP[2:0]
SUP[2:0]
• Selection of which slot will provide the parameter
• Choice of whether voltage or current is to be re-
• Selection of the which supply that is to be monitored
D[7:0]
D[7:0]
D[7:0]
BUSY
BUSY
BUSY
BUSY
BUSY
BUSY
BUSY
BUSY
BUSY
BUSY
Bit(s)
Bit(s)
Bit(s)
Bit(s)
PAR
PAR
PAR
PAR
D[7]
D[7]
D[7]
D[7]
D[7]
D[7]
D[7]
D[7]
D[7]
D[7]
D[7]
D[7]
D[7]
D[7]
D[7]
D[7]
D[6]
D[6]
D[6]
D[6]
D[5]
D[5]
D[5]
D[5]
SEL
SEL
SEL
SEL
Bit
Bit
Bit
Bit
Power-Up Default Value:
Read Command Byte:
Power-Up Default Value:
Power-Up Default Value:
Command_Byte Value (R/W):
to be measured (Register Bit D[4])
ported (Register Bit D[3])
(Register Bit D[2:0])
Measured data from ADC
Measured data from ADC
Measured data from ADC
ADC status
ADC status
ADC status
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
A/D Slot Select
A/D Slot Select
A/D Slot Select
A/D Slot Select
Parameter control bit for ADC conversion
Parameter control bit for ADC conversion
Parameter control bit for ADC conversion
Parameter control bit for ADC conversion
Supply select for ADC conversion
Supply select for ADC conversion
Supply select for ADC conversion
Supply select for ADC conversion
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
D[6]
D[6]
D[6]
D[6]
D[6]
D[6]
D[6]
D[6]
D[6]
D[6]
D[6]
D[6]
D[6]
D[6]
D[6]
D[6]
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
Function
Function
Function
Function
Function
Function
Function
Function
D[5]
D[5]
D[5]
D[5]
D[5]
D[5]
D[5]
D[5]
D[5]
D[5]
D[5]
D[5]
D[5]
D[5]
D[5]
D[5]
Conversion Result Register (RESULT)
Conversion Result Register (RESULT)
Voltage or Current Data from ADC
Voltage or Current Data from ADC
ADC Control Register (ADC_CNTRL)
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
D[4]
D[4]
D[4]
D[4]
D[4]
D[4]
D[4]
D[4]
D[4]
D[4]
D[4]
D[4]
D[4]
D[4]
D[4]
D[4]
SEL
SEL
SEL
SEL
SEL
SEL
SEL
xxxx xxxx
0000 0000
0000 0000
0000 0000
0000 0001
24
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.
b
b
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
= xx
= 00
b
b
PAR
PAR
PAR
PAR
PAR
PAR
PAR
D[3]
D[3]
D[3]
D[3]
D[3]
D[3]
D[3]
D[3]
D[3]
D[3]
D[3]
D[3]
D[3]
D[3]
D[3]
D[3]
= 00
= 01
h
h
h
h
read-only
read-only
read-only
0 = ADC quiescent, 1 = ADC busy
0 = ADC quiescent, 1 = ADC busy
0 = ADC quiescent, 1 = ADC busy
Always read as zero
Always read as zero
Always read as zero
Always read as zero
Always read as zero
Always read as zero
Always read as zero
Always read as zero
Specifi es slot for A/D conversion
Specifi es slot for A/D conversion
Specifi es slot for A/D conversion
Specifi es slot for A/D conversion
0 = Slot A, 1 = Slot B
0 = Slot A, 1 = Slot B
0 = Slot A, 1 = Slot B
0 = Slot A, 1 = Slot B
1 = Voltage, 0 = Current
1 = Voltage, 0 = Current
1 = Voltage, 0 = Current
1 = Voltage, 0 = Current
000 = No conversion
000 = No conversion
000 = No conversion
000 = No conversion
001 = +3.3V supply
001 = +3.3V supply
001 = +3.3V supply
001 = +3.3V supply
010 = Undefi ned - Do Not Use
010 = Undefi ned - Do Not Use
010 = Undefi ned - Do Not Use
010 = Undefi ned - Do Not Use
011 = +12V supply
011 = +12V supply
011 = +12V supply
011 = +12V supply
100 = Undefi ned - Do Not Use
100 = Undefi ned - Do Not Use
100 = Undefi ned - Do Not Use
100 = Undefi ned - Do Not Use
101 = VAUX supply
101 = VAUX supply
101 = VAUX supply
101 = VAUX supply
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
D[2]
D[2]
D[2]
D[2]
D[2]
D[2]
D[2]
D[2]
D[2]
D[2]
D[2]
D[2]
D[2]
D[2]
D[2]
D[2]
Operation
Operation
Operation
Operation
Operation
Operation
Operation
Operation
Supply Select
Supply Select
Supply Select
Supply Select
Supply Select
Supply Select
Supply Select
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
SUP[2:0]
SUP[2:0]
SUP[2:0]
SUP[2:0]
SUP[2:0]
SUP[2:0]
SUP[2:0]
D[1]
D[1]
D[1]
D[1]
D[1]
D[1]
D[1]
D[1]
D[1]
D[1]
D[1]
D[1]
D[1]
D[1]
D[1]
D[1]
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
M9999-033105
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
D[0]
D[0]
D[0]
D[0]
D[0]
D[0]
D[0]
D[0]
D[0]
D[0]
D[0]
D[0]
D[0]
D[0]
D[0]
D[0]