Revision 1.02 – April 12, 2007
S5920 – PCI Product: Operation Registers
OUTGOING MAILBOX REGISTER (OMB)
Data Book
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.
Outgoing Mailbox
Register Names:
0Ch
PCI Address Offset:
Power-up value:
PCI Attribute:
Size:
Undefined
Read/Write
32 bits
Figure 26. Outgoing Mailbox
31
24 23
16 15
8
7
0
Byte 3
Byte 2
Byte 1
Byte 0
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DS1596
72
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
