Altera IP Compiler for PCI Express - Manual (Page 157)

Chapter 6: Register Descriptions 6–9
PCI Express Avalon-MM Bridge Control Register Content
August 2014 Altera Corporation IP Compiler for PCI Express User Guide
The PCI Express-to-Avalon-MM mailbox registers are writable at the addresses shown
in
Table 6–15 . Writing to one of these registers causes the corresponding bit in the
Avalon-MM interrupt status register to be set to a one.
The Avalon-MM-to-PCI Express mailbox registers are read at the addresses shown in
Table 6–16 . The PCI Express root complex should use these addresses to read the
mailbox information after being signaled by the corresponding bits in the PCI Express
interrupt enable register.
Avalon-MM-to-PCI Express Address Translation Table
The Avalon-MM-to-PCI Express address translation table is writable using the CRA
slave port if dynamic translation is enabled.
Table 6–15. PCI Express-to-Avalon-MM Mailbox Registers, Read/Write Address Range: 0x800-0x0815
Address Name Access Description
0x0800 P2A_MAILBOX0 RW PCI Express-to-Avalon-MM Mailbox 0
0x0804 P2A_MAILBOX1 RW PCI Express-to-Avalon-MM Mailbox 1
0x0808 P2A_MAILBOX2 RW PCI Express-to-Avalon-MM Mailbox 2
0x080C P2A_MAILBOX3 RW PCI Express-to-Avalon-MM Mailbox 3
0x0810 P2A_MAILBOX4 RW PCI Express-to-Avalon-MM Mailbox 4
0x0814 P2A_MAILBOX5 RW PCI Express-to-Avalon-MM Mailbox 5
0x0818 P2A_MAILBOX6 RW PCI Express-to-Avalon-MM Mailbox 6
0x081C P2A_MAILBOX7 RW PCI Express-to-Avalon-MM Mailbox 7
Table 6–16. Avalon-MM-to-PCI Express Mailbox Registers, read-only Address Range: 0x0900-0x091F
Address Name Access Description
0x0900 A2P_MAILBOX0 RO Avalon-MM-to-PCI Express Mailbox 0
0x0904 A2P_MAILBOX1 RO Avalon-MM-to-PCI Express Mailbox 1
0x0908 A2P_MAILBOX2 RO Avalon-MM-to-PCI Express Mailbox 2
0x090C A2P_MAILBOX3 RO Avalon-MM-to-PCI Express Mailbox 3
0x0910 A2P_MAILBOX4 RO Avalon-MM-to-PCI Express Mailbox 4
0x0914 A2P_MAILBOX5 RO Avalon-MM-to-PCI Express Mailbox 5
0x0918 A2P_MAILBOX6 RO Avalon-MM-to-PCI Express Mailbox 6
0x091C A2P_MAILBOX7 RO Avalon-MM-to-PCI Express Mailbox 7