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RTP Control Registers
2169
SPNU563A–March 2018
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RAM Trace Port (RTP)
37.3.3 RTP Global Status Register (RTPGSR)
This register provides status information of the module. Figure 37-11 and Table 37-12 describe this
register.
Figure 37-11. RTP Global Status Register (RTPGSR) (offset = 08h)
31 16
Reserved
R-0
15 13 12 11 10 9 8
Reserved EMPTYSER EMPTYPER2 EMPTYPER1 EMPTY2 EMPTY1
R-0 R-1 R-1 R-1 R-1 R-1
7 4 3 2 1 0
Reserved OVFPER2 OVFPER1 OVF2 OVF1
R-0 R/W1CP-0 R/W1CP-0 R/W1CP-0 R/W1CP-0
LEGEND: R/W = Read/Write; R = Read only; W1CP = Write 1 to clear in privilege mode only; -n = value after reset
Table 37-12. RTP Global Status Register (RTPGSR) Field Descriptions
Bit Field Value Description
31-13 Reserved 0 Reads return 0. Writes have no effect.
12 EMPTYSER Serializer empty. This bit determines if there is data left in the serializer.
0 Serializer holds data that is shifted out.
1 Serializer is empty.
11 EMPTYPER2 Peripheral FIFO empty. This bit determines if there are entries left in the FIFO. FIFO4 is used for tracing
peripherals under PCR3.
0 FIFO4 contains entries.
1 FIFO4 is empty.
10 EMPTYPER1 Peripheral FIFO empty. This bit determines if there are entries left in the FIFO. FIFO3 is used for tracing
peripherals under PCR1.
0 FIFO3 contains entries.
1 FIFO3 is empty.
9 EMPTY2 RAM block 2 FIFO empty. This bit determines if there are entries left in the FIFO. FIFO2 is used for
tracing the upper 256kB RAM.
0 FIFO2 contains entries.
1 FIFO2 is empty.
8 EMPTY1 RAM block 1 FIFO empty. This bit determines if there are entries left in the FIFO. FIFO1 is used for
tracing the lower 256kB RAM.
0 FIFO1 contains entries.
1 FIFO1 is empty.
7-4 Reserved 0 Reads return 0. Writes have no effect.
3 OVFPER Overflow peripheral FIFO. This flag indicates that FIFO4 had all locations full and another attempt to
write data to it occurred. The bit will not be cleared automatically if the FIFO is emptied again. The bit
will stay set until the CPU clears it.
Read:
0 No overflow occurred.
1 An overflow occurred.
Write in Privilege:
0 No effect.
1 Clears the bit.
2 Reserved 0 Reads return 0. Writes have no effect.
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