Mailbox
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17.1.5.21 MSGSTATUS_2 Register (offset = C8h) [reset = 0h]
MSGSTATUS_2 is shown in Figure 17-23 and described in Table 17-35.
The message status register has the status of the messages in the mailbox
Figure 17-23. MSGSTATUS_2 Register
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Reserved NBOFMSGMBM
R-0h
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit; -n = value after reset
Table 17-35. MSGSTATUS_2 Register Field Descriptions
Bit Field Type Reset Description
2-0 NBOFMSGMBM R 0h Number of unread messages in Mailbox.
Limited to four messages per mailbox.
3268
Interprocessor Communication SPRUH73H–October 2011–Revised April 2013
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