MPC8540 datasheet(946/1302 Pages) FREESCALE

946 / 1302 page

MPC8540 PowerQUICC III Integrated Host Processor Reference Manual, Rev. 1

17-22

Freescale Semiconductor

RapidIO Interface

17.3.1.9 Mailbox Command and Status Register (MSR)

The MSR, shown in Figure 17-11, reflects the status of the RapidIO mailbox controller on this

device. Note that the RapidIO controller only supports Mailbox 0.

Table 17-15 describes the fields of the MSR.

17.3.1.10 Port-Write and Doorbell Command and Status Register (PWDCSR)

The PWDCSR, shown in Figure 17-12, reflects the status of the RapidIO doorbell and port-write

hardware on this device. Additional details can be found in the Parallel RapidIO Interconnect

Specification in the sections titled “Doorbell CSR” and “Write Port CSR.”

3 4

R A FU EM B 0 ERR 0

Reset

0000_0000_0000_0000_0000_0000_0000_0000

Offset

0xC_0040

Figure 17-11. Mailbox Status Register (MSR)

Table 17-15. MSR Field Definitions

Bits

Name

Description

Available

0 Mailbox 0 is not ready to accept messages. All incoming message transactions return error

responses.

1 Mailbox 0 is initialized and ready to accept messages.

1FU

Full

0 Mailbox 0 is not full.

1 Mailbox 0 is full. New messages are retried.

2EM

Empty

0 Mailbox 0 contains outstanding messages.

1 Mailbox 0 contains no outstanding messages.

Busy

0 Mailbox 0 is not busy processing a message.

1 Mailbox 0 is busy processing a message. New message operations return retry responses.

4—

Reserved

5ERR

Error

0 Mailbox 0 has not received an illegal message operation.

1 Mailbox 0 received an illegal message operation. All incoming message transactions return error

responses.

6–31

—

Reserved

MPC8540 Datasheet(PDF) 946 Page - Freescale Semiconductor, Inc

MPC8540 Datasheet(HTML) 946 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL