MIC2593 Micrel Semiconductor, MIC2593 Datasheet - Page 17
MIC2593
Manufacturer Part Number
MIC2593
Description
Dual-Slot PCI Hot Plug Controller
Manufacturer
Micrel Semiconductor
Datasheet
1.MIC2593.pdf
(26 pages)
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Control Register, Slot B (CNTRLB)
8-Bits, Read/Write
The power-up default value is 00
April 2004
MIC2593
MAINBPG
read-only
AUXBPG
AUXBPG
VAUXB
MAINB
Bit(s)
D[7]
D[5]
D[4]
D[3]
D[3]
Power-Up Default Value: 0000 0000
Command_Byte Value (R/W): 0000 0011
AUX output power-good status, Slot B
MAIN output power-good status, Slot B
Reserved
Reserved
Reserved
Reserved
MAIN enable control, Slot B
VAUX enable control, Slot B
MAINBPG
read-only
D[6]
h
. Slot is disabled upon power-up, i.e., all supply outputs are off.
Reserved
read only
Function
D[5]
Control Register, Slot B (CNTRLB)
b
= 00
b
h
= 03
Reserved
read only
D[4]
h
17
Reserved
read-only
D[3]
1 = Power-is-Good
(VAUXB Output is above its UVLO threshold)
1 = Power-is-Good
(MAINB Outputs are above their UVLO
thresholds)
Always read as zero
Always read as zero
Always read as zero
Always read as zero
0 = Off, 1 = On
0 = Off, 1 = On
Reserved
read-only
D[2]
Operation
read/write
MAINB
D[1]
read/write
M9999-042204
VAUXB
D[0]
Micrel