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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： 18/34页
文件大小： 1920K
代理商： MIC2591B-5YTQ
MIC2591B
Micrel
March 2005
25
M9999-033105
Control Register, Slot A (CNTRLA)
8-Bits, Read/Write
Control Register, Slot A (CNTRLA)
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
read only
read-only
read/write
AUXAPG
MAINAPG
Reserved
/FORCE_A
MAINA
VAUXA
ENABLE
Bit(s)
Function
Operation
AUXAPG
AUX output power-good status, Slot A
1 = Power-is-Good
(VAUXA Output is above its UVLO
threshold)
MAINAPG MAIN output power-good status, Slot A
1 = Power-is-Good
(MAINA Outputs are above their UVLO
thresholds)
D[5]
Reserved
Always read as zero
D[4]
Reserved
Always read as zero
D[3]
Reserved
Always read as zero
/FORCE_A Allows or inhibits the operation of the /FORCE_ONA
0 = /FORCE_ONA is enabled
ENABLE
input pin
1 = /FORCE_ONA is disabled
MAINA
MAIN enable control, Slot A
0 = Off, 1 = On
VAUXA
VAUX enable control, Slot A
0 = Off, 1 = On
Power-Up Default Value:
0000 0000b = 00h
Read Command_Byte Value (R/W):
0000 0010b = 02h
The power-up default value is 00h. Slot is disabled upon power-up, i.e., all supply outputs are off.
Notes:
1.
The state of the /PWRGDA pin is the logical AND of the values of the AUXAPG and the MAINAPG bits, except when /FORCE_ONA is asserted. If
/FORCE_ONA is asserted (the pin is pulled low), and /FORCE_AENABLE is set to a logic zero, the /PWRGDA pin will be unconditionally forced to
its open-drain (“Power Not Good”) state.
2.
The values of the MAINAPG and AUXAPG register bits are not affected by /FORCE_ONA, but will instead continue to read as high if power is
“Good,” and as low if the conditions which indicate that power is good are not met.
read-only
read only
read-only
read/write
AUXAPG
MAINAPG
Reserved
/FORCE_A
MAINA
VAUXA
ENABLE
(MAINA Outputs are above their UVLO
(VAUXA Output is above its UVLO
threshold)
MAINAPG MAIN output power-good status, Slot A
1 = Power-is-Good
(MAINA Outputs are above their UVLO
thresholds)
D[5]
Reserved
Always read as zero
D[4]
Reserved
Always read as zero
D[3]
Reserved
Always read as zero
/FORCE_A Allows or inhibits the operation of the /FORCE_ONA
0 = /FORCE_ONA is enabled
ENABLE
input pin
1 = /FORCE_ONA is disabled
MAINA
MAIN enable control, Slot A
0 = Off, 1 = On
VAUXA
VAUX enable control, Slot A
0 = Off, 1 = On
Bit(s)
Function
Operation
AUXAPG
AUX output power-good status, Slot A
1 = Power-is-Good
(VAUXA Output is above its UVLO
threshold)
MAINAPG MAIN output power-good status, Slot A
1 = Power-is-Good
(MAINA Outputs are above their UVLO
thresholds)
D[5]
Reserved
Always read as zero
D[4]
Reserved
Always read as zero
D[3]
Reserved
Always read as zero
/FORCE_A Allows or inhibits the operation of the /FORCE_ONA
0 = /FORCE_ONA is enabled
ENABLE
input pin
1 = /FORCE_ONA is disabled
MAINA
MAIN enable control, Slot A
0 = Off, 1 = On
VAUXA
VAUX enable control, Slot A
0 = Off, 1 = On
Bit(s)
Function
Operation
AUXAPG
AUX output power-good status, Slot A
1 = Power-is-Good
(VAUXA Output is above its UVLO
threshold)
MAINAPG MAIN output power-good status, Slot A
1 = Power-is-Good
(MAINA Outputs are above their UVLO
D[5]
Reserved
Always read as zero
D[4]
Reserved
Always read as zero
D[3]
Reserved
Always read as zero
/FORCE_A Allows or inhibits the operation of the /FORCE_ONA
0 = /FORCE_ONA is enabled
ENABLE
input pin
1 = /FORCE_ONA is disabled
MAINA
MAIN enable control, Slot A
0 = Off, 1 = On
VAUXA
VAUX enable control, Slot A
0 = Off, 1 = On
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
read only
read-only
read/write
AUXAPG
MAINAPG
Reserved
/FORCE_A
MAINA
VAUXA
ENABLE
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
read only
read-only
read/write
AUXAPG
MAINAPG
Reserved
/FORCE_A
MAINA
VAUXA
ENABLE
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
read only
read-only
read/write
AUXAPG
MAINAPG
Reserved
/FORCE_A
MAINA
VAUXA
ENABLE
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
read only
read-only
read/write
AUXAPG
MAINAPG
Reserved
/FORCE_A
MAINA
VAUXA
ENABLE
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
read only
read-only
read/write
AUXAPG
MAINAPG
Reserved
/FORCE_A
MAINA
VAUXA
ENABLE
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
read only
read-only
read/write
AUXAPG
MAINAPG
Reserved
/FORCE_A
MAINA
VAUXA
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
read only
read-only
read/write
AUXAPG
MAINAPG
Reserved
/FORCE_A
MAINA
VAUXA
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