M3 Flash Semaphore Register; M3 Flash Semaphore Field Descriptions - Texas Instruments Concerto F28M36 Series Technical Reference Manual

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Table 1-180. C28 to M3 Core IPC Status (CTOMIPCSTS) Register Field Descriptions (continued)
Bit Field
6 IPC7
5 IPC6
4 IPC5
3 IPC4
2 IPC3
1 IPC2
0 IPC1

1.13.11.6 M3 Flash Semaphore Register

31
15
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Bit Field
31-4 KEY
3-2 Reserved
1-0 SEM
SPRUHE8E – October 2012 – Revised November 2019
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Value Description
0 CTOMIPCSTS Flag 7. C28 to M3 core IPC flag 7 status. The bit is '1' if the corresponding
CTOMIPCSET bit has been written with a '1' and CTOMIPCCLR or CTOMIPCACK bit has not been
written with a '1."
0 CTOMIPCSTS Flag 6. C28 to M3 core IPC flag 6 status. The bit is '1' if the corresponding
CTOMIPCSET bit has been written with a '1' and CTOMIPCCLR or CTOMIPCACK bit has not been
written with a '1."
0 CTOMIPCSTS Flag 5. C28 to M3 core IPC flag 5 status. The bit is '1' if the corresponding
CTOMIPCSET bit has been written with a '1' and CTOMIPCCLR or CTOMIPCACK bit has not been
written with a '1."
0 CTOMIPCSTS Interrupt 4. C28 to M3 IPC interrupt 4 status flag. The bit is '1' if the corresponding
CTOMIPCSET bit has been written with a '1' and CTOMIPCCLR or CTOMIPCACK bit has not been
written with a '1."
0 CTOMIPCSTS Interrupt 3. C28 to M3 IPC interrupt 3 status flag. The bit is '1' if the corresponding
CTOMIPCSET bit has been written with a '1' and CTOMIPCCLR or CTOMIPCACK bit has not been
written with a '1."
0 CTOMIPCSTS Interrupt 2. C28 to M3 IPC interrupt 2 status flag. The bit is '1' if the corresponding
CTOMIPCSET bit has been written with a '1' and CTOMIPCCLR or CTOMIPCACK bit has not been
written with a '1."
0 CTOMIPCSTS Interrupt 1. C28 to M3 IPC interrupt 1 status flag. The bit is '1' if the corresponding
CTOMIPCSET bit has been written with a '1' and CTOMIPCCLR or CTOMIPCACK bit has not been
written with a '1."
Figure 1-169. M3 Flash Semaphore Register
KEY
R=0/W
Table 1-181. M3 Flash Semaphore Field Descriptions
Value Description
0 Writing the value 0xA5937EC will allow writes to the SEM bits or writes are ignored. Reads will
return 0.
Note: This is to prevent spurious writes to the semaphore bits.
Reserved
0 Pump Access Request Semaphore from the M3
• A value of "00", "10", "11" gives ownership to the M3
• A value of "01" gives ownership to the C28.
• The following are the only state transitions allowed on these bits.
– "00","11" -> "01"
– "00","11" -> "10"
• "10" -> "00","11" (This can only happen from an M3 write to these bits to relinquish its ownership)
• State transitions from "00" → "11" and "11" → "00" are allowed by design. However these
transitions will not result in change in ownership.
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KEY
R=0/W
System Control Registers
4 3 2 1
Reserved SEM
R-0 R/W-0
System Control and Interrupts
16
0
287