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Spectracom Corporation TPRO-cPCI/TSAT-cPCI
Synchronizable Timecode Generator User Manual 4-3
4.3.4 Interrupt Enable Register (tbreg_irq_en)
The user can specify which of several possible conditions will generate an interrupt. The
individual bits correspond to the IRQ Enable bits in the Status Register.
4.3.5 Clear Flag–Match Register (tbreg_clrflag_m)
Writing (any value) clears Flag–Match.
4.3.6 Clear Flag–Heartbeat Register (tbreg_clrflag_hb)
Writing (any value) clears Flag–Heartbeat.
4.3.7 Clear Flag–Command Overflow (tbreg_clrflag_cmov)
Writing (any value) clears Flag–Command Overflow.
4.3.8 Clear Flag–Sync Change (tbreg_clrflag_sc)
Writing (any value) clears Flag–Sync Change.
4.3.9 Status Register (tbreg_status)
The Status Register is defined as shown below. Reading the Status Register also loads the
instantaneous Clock Time and Clock Date Registers.
Bit Name Definition (1=asserted)
31:30 —— (reserved for future use)
29 tbstat_f_cmov Flag–Command Overflow
28 tbstat_tp_int Testpoint–Interrupt
27:24 tbstat_ttec[3:0] Time Tag Event Counter
23:21 —— (reserved for future use)
20 tbstat_tp_gps Testpoint–GPS Antenna
19 —— (reserved for future use)
18:16 tbstat_ssi[2:0] Synchronization Source Indicator
15 —— (reserved for future use)
14 tbstat_ttenable Enable/disable Time Tag input
13 tbstat_irq_sc IRQ Enable–Sync Change
12 tbstat_irq_cc IRQ Enable -Command Complete
11 —— (reserved for future use)
10 tbstat_irq_tt IRQ Enable–Time Tag
09 tbstat_irq_hb IRQ Enable–Heartbeat
08 tbstat_irq_m IRQ Enable–Match
07 tbstat_f_sc Flag–Sync Change
06 tbstat_f_cc Flag–Command Complete
05 —— (reserved for future use)
04 tbstat_f_tt Flag–Time Tag
03 tbstat_f_hb Flag–Heartbeat
02 tbstat_f_m Flag–Match
01 tbstat_f_sync Flag–Sync
00 tbstat_f_acq Flag–Acquire