IDT 89HPES12T3G2, Preliminary User'S Manual

Page: 106 / 146

IDT Configuration Registers
PES12T3G2 User Manual 8 - 30 January 28, 2013
Notes
PCIESSTS - PCI Express Slot Status (0x05A)
9:8 PIC RW 0x1 Power Indicator Control. When read, this register returns the cur-
rent state f the Power Indicator. Writing to this register sets the
indicator.
This bit is read-only and has a value of zero when the correspond-
ing capability is not enabled in the PCIESCAP register.
This field is always zero if the PWRIP bit is cleared in the PCIES-
CAP register.
0x0 - (reserved) Reserved
0x1 - (on) On
0x2 - (blink) Blink
0x3 - (off) Off
This field has no effect on the upstream port.
10 PCC RW 0x0 Power Controller Control. When read, this register returns the
current state of the power applied to the slot. Writing to this register
sets the power state of the slot.
This bit is read-only and has a value of zero when the correspond-
ing capability is not enabled in the PCIESCAP register.
0x0 -(on) Power on
0x1 -(off) Power off
11 EIC RW 0x0 Electromechanical Interlock Control. This field always returns a
value of zero when read. If an electromechanical interlock is imple-
mented, a write of a one to this field causes the state of the inter-
lock to toggle and a write of a zero has no effect.
This bit is read-only and has a value of zero when the correspond-
ing capability is not enabled in the PCIESCAP register.
12 DLLLASCE RW 0x0 Data Link Layer Link Active State Change Enable. This bit
when set enables generation of a Hot-Plug interrupt or wake-up
event on a data link layer active field state change.
15:13 Reserved RO 0x0 Reserved field.
Bit
Field
Field
Name
Type Default
Value
Description
0 ABP RW1C 0x0 Attention Button Pressed. Set when the attention button is
pressed.
1 PFD RW1C 0x0 Power Fault Detected. Set when the Power Controller detects a
power fault.
2 MRLSC RW1C 0x0 MRL Sensor Changed. Set when an MRL Sensor state change is
detected.
3 PDC RW1C 0x0 Presence Detected Changed. Set when a Presence Detected
change is detected.
Bit
Field
Field
Name
Type Default
Value
Description