s5935qrc Applied Micro Circuits Corporation (AMCC), s5935qrc Datasheet - Page 86

• Manufacturer Part Number: s5935qrc
• Description: Pci Product
• Manufacturer: Applied Micro Circuits Corporation (AMCC)

S5935 – PCI Product
ADD-ON GENERAL CONTROL/STATUS
REGISTER (AGCSTS)
Figure 36. Add-On General Control/Status Register
86
Register Name
Add-On
Address Offset
Power-up value
Attribute
Size
Reset Controls
D27=Mailbox Flags
D26=PCI to Add-on FIFO
D25=Add-on to PCI FIFO
nv operation
address/data
nvRAM Access Ctrl
Transfer Count
Enable
DS1527
Status Flags
Status Flags
31
Add-On General Control and Status
3Ch
000000F4h (PCI initiated bus master-
ing) 00000034h (Add-On initiated bus
mastering)
Read/Write, Read Only, Write Only
32 bits
292827 2524 23
0
16 15
12 11
This register provides for overall control of the Add-On
portion of this device. It is used to provide a method to
perform software resets of the mailbox and FIFO flags.
The following Add-On controls are provided:
The following status flags are provided to the Add-On:
0
•
•
•
•
•
•
•
•
•
•
Reset PCI to Add-On FIFO flags
Reset Add-On to PCI FIFO flags
Reset mailbox empty full status flags
Write/read external non-volatile memory.
Add-On to PCI FIFO FULL
Add-On to PCI FIFO has four or more empty
locations
Add-On to PCI FIFO EMPTY
PCI to Add-On FIFO FULL
PCI to Add-On FIFO has four or more words
loaded
PCI to Add-On FIFO EMPTY
75
6
Revision 1.02 – June 27, 2006
AMCC Confidential and Proprietary
D6=Read Transfer Count
Equals Zero (RO)
D7=Write Transfer Count
Equals Zero (RO)
FIFO STATUS (RO)
D5=PCI to Add-on FIFO Empty
D4=PCI to Add-on 4+ Spaces
D3=PCI to Add-on FIFO Full
D2=Add-on to PCI FIFO Empty
D1=Add-on to PCI FIFO 4+ Words
D0=Add-on to PCI FIFO Full
BIST Condition Code(R/W)
0
Bit
Value
Data Book