Programmer’s Guide BCM5722
10/15/07
Broadcom Corporation
Document 5722-PG101-R Low-Priority Mailboxes Page 324
LOW-PRIORITY MAILBOXES
These 64-bit registers are called low-priority mailbox registers (or low-priority mailboxes). When a value is written to the least
significant 32 bits of these registers, an event (known as a Mailbox Event) is generated to the RX RISC. Only lower 32 bits
of these 64-bit low-priority mailbox registers are implemented.
Table 328: Low-Priority Mailbox Registers—BCM5722, BCM5755, BCM5755M, BCM5756M, BCM5757, BCM5754,
BCM5787 Only
Offset Registers
0x5800–0x5807 Interrupt Mailbox 0
0x5808–0x5867 Reserved
0x5868–0x586F Receive BD Standard Producer Ring Producer Index
0x5870–0x587F Reserved
0x5880–0x5487 Receive BD Return Ring 1 Consumer Index
0x5888–0x588F Receive BD Return Ring 2 Consumer Index
0x5890–0x5897 Receive BD Return Ring 3 Consumer Index
0x5898–0x589F Receive BD Return Ring 4 Consumer Index
0x58a0–0x58FF Reserved
0x5900–0x5907 Send BD Ring Host Producer Index
0x5908–0x590F Reserved
0x5910–0x597F Reserved
0x5980–0x5987 Send BD Ring NIC Producer Index
0x5988–0x59FF Reserved
Table 329: Low-Priority Mailbox Registers—BCM5906 Only
Offset Registers
0x5800–0x5807 Interrupt Mailbox 0
0x5808–0x5867 Reserved
0x5868–0x586F Receive BD Standard Producer Ring Producer Index
0x5870–0x587F Reserved
0x5880–0x5887 Receive BD Return Ring 1 Consumer Index
0x5888–0x58FF Reserved
0x5900–0x5907 Data Send BD Ring Host Producer Index
0x5908–0x590F ISO Send BD Ring Host Producer Index
0x5910–0x597F Reserved
0x5980–0x5987 Send BD Ring NIC Producer Index
0x5988–0x59FF Reserved
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