s5920 Applied Micro Circuits Corporation (AMCC), s5920 Datasheet - Page 72

• Manufacturer Part Number: s5920
• Description: Pci Product
• Manufacturer: Applied Micro Circuits Corporation (AMCC)

S5920 – PCI Product: Operation Registers
OUTGOING MAILBOX REGISTER (OMB)
Figure 26. Outgoing Mailbox
AMCC Confidential and Proprietary
Register Names:
PCI Address Offset:
Power-up value:
PCI Attribute:
Size:
31
Byte 3
24
Outgoing Mailbox
0Ch
Undefined
Read/Write
32 bits
23
Byte 2
16
15
This DWORD register provides a method for sending
command or parameter data to the Add-On bus. PCI
bus transactions to this register may be of any width
(byte, word, or DWORD). Writing to this register can
be a source for Add-On bus interrupts by enabling
interrupt generation through the use of the Add-on’s
Interrupt Control/Status Register. This is also called
the Add-On Incoming Mailbox Register (AIMB). Read-
ing from this register will not affect interrupts or the
MBEF status register.
Byte 1
8
Revision 1.02 – April 12, 2007
7
Byte 0
Data Book
DS1596
0
72