W89C841F Datasheet, PDF (78/102 Pages) Winbond – 3-IN - 1 10/100M FAST ETHERNET CONTROLLER

W89C841F/D
Df8/DFPSR Function Present State Register
This is read-only register reflects the current state of each condition that can cause a status change
event.
BIT
31:16
15
14:5
4
3:0
ATTRIBUTE
R
R
R
R
R
BIT NAME
----
PRE_INT
----
PRE_
GWAKE
----
DESCRIPTION
Reserved. Fixed to 0.
Present Interrupt Status
It reflects the current state of interrupt requests regardless of
the mask value. It is set when the Ethernet function has a
pending interrupt and cleared when the software driver
acknowledges all active interrupts from register C14/CISR.
Reserved. Fixed to 0.
Present General Wake-up Status:
It reflects the current state of the wake-up event. This bit is
cleared when either the General Wake-up Event in the
function event register is cleared, or when the PME_Status
bit in the register Fe0/FPMR1[15] is cleared.
Reserved. Fixed to 0.
Dfc/DFFER Function Force Event Register
This register is used to generate interrupt or wake-up event.
BIT
31:16
15
14:5
4
3:0
ATTRIBUTE
R
W
R
W
R
BIT NAME
---
FRS_INTR
---
FRS_
GWAKE
---
DESCRIPTION
Reserved. Fixed to 0.
Force Interrupt Event:
Writing 1 to this field sets the INTR bit in the register
Df0/DFER. PRE_INTR bit in the register Df8/DFPSR[15] is
not affected and continues to reflect the current state of the
functional interrupt. Writing 0 has no effect.
Reserved. Fixed to 0.
Force General Wake-up Event:
Writing 1 to this field sets the GWAKE bit in the register
Df0/DFER. PRE_GWAKE bit in the register Df8/DFPSR[4] is
not affected and continues to reflect the current state of the
Wakeup request. Writing 0 has no effect.
Reserved. Fixed to 0.
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