MIC2593 Micrel Semiconductor, MIC2593 Datasheet - Page 16

• Manufacturer Part Number: MIC2593
• Description: Dual-Slot PCI Hot Plug Controller
• Manufacturer: Micrel Semiconductor

MIC2593
Detailed Register Descriptions
Control Register, Slot A (CNTRLA)
8-Bits, Read/Write
The power-up default value is 00
M9999-042204
MAINAPG
read-only
AUXAPG
AUXAPG
VAUXA
MAINA
Bit(s)
D[7]
D[5]
D[4]
D[3]
D[2]
Power-Up Default Value: 0000 0000
Read Command_Byte Value (R/W): 0000 0010
AUX output power-good status, Slot A
MAIN output power-good status, Slot A
Reserved
Reserved
Reserved
Reserved
MAIN enable control, Slot A
VAUX enable control, Slot A
MAINAPG
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 A (CNTRLA)
b
= 00
h
Reserved
read only
D[4]
b
= 02
h
16
Reserved
read-only
D[3]
1 = Power-is-Good
(VAUXA Output is above its UVLO threshold)
1 = Power-is-Good
(MAINA 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
MAINA
D[1]
read/write
VAUXA
April 2004
D[0]
Micrel