GR740-UM-DS, Nov 2017, Version 1.7 172 www.cobham.com/gaisler
GR740
Table 159. 0x14 - RTR.AMBATC - AMBA port Time-code
31 24 23 16 15 8 7 6 5 0
TCMSK TCVAL RESERVED TCTRL TIMECNT
0x00 0x00 0x00 0x0 0x00
rw rw r rw rw
31: 24 Time-code filter mask (TCMSK) - If a bit in this field is set to 1 then the corresponding bit in the RTR.AMBA-
TIME.TCVAL field must match the value of the same bit in a received time-code in order for that time-code to
generate an AMBA IRQ or a pulse on the internal tickout signals connected to the general purpose timers.
23: 16 Time-code filter value (TCVAL) - For each bit set to 1 in the RTR.AMBATIME.TCMSK, the corresponding bit
in this field must match the value of the same bit of a received time-code in order to that time-code to generate
and AMBA IRQ, or a pulse on the internal tickout signals connected to the general purpose timers.
15: 8 RESERVED
7: 6 Time control flags (TCTRL) - The current value of the time control flags. Sent with time-code resulting from a
tick-in. Received control flags are also stored in this register.
5: 0 Time counter (TIMECNT) - The current value of the system time counter. It is incremented for each tick-in and
the incremented value is transmitted. The register can also be written directly but the written value will not be
transmitted. Received time-counter values are also stored in this register
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