GR712RC-UM, Jun 2017, Version 2.9 221 www.cobham.com/gaisler
GR712RC
27.10 Signal definitions
The signals are described in table 241.
Table 238. GRTM master frame generation register
31 43210
RESERVED MC - OCF OW
31: 4 RESERVED
3 Master Channel (MC) - enable master channel counter generation (TM only)
2RESERVED
1 Operation Control Field (OCF) - enable MC_OCF for master channel
0 Over Write OCF (OW) - overwrite OCF bits 16 and 17 when set.
When overwritten, bit 16 (No RF Available) and 17 (No Bit Lock) of the OCF are based on the dis-
crete inputs TCRFAVL[4:0] and TCACT[4:0] respectively, where the multiple inputs are OR-ed
before assigned to the two bits. Note that if these telecommand input signals are shared with other
function via the I/O switch matrix, then the values of it 16 and 17 might reflect the status of the tran-
sponders incorrectly.
Table 239. GRTM idle frame generation register
31 22 21 20 19 18 17 16 15 10 9 0
RESERVED ID
LE
O
C
F
E
V
C
-V
C
C
MC VCID SCID
31: 22 RESERVED
21 Idle Frames (IDLE) - enable idle frame generation
20 Operation Control Field (OCF) - enable OCF for idle frames
19 Extended Virtual Channel Counter (EVC) - enable extended virtual channel counter generation for
idle frames (TM only, ECSS)
18 RESERVED
17 Virtual Channel Counter Cycle (VCC) - enable virtual channel counter cycle generation for idle
frames (AOS only)
16 Master Channel (MC) - enable separate
master channel counter generation for idle frames (TM only)
15: 10 Virtual Channel Identifier (VCID) - virtual channel identifier for idle frames
9: 0 Spacecraft Identifier (SCID) - spacecraft identifier for idle frames
Table 240. GRTM OCF register
31 0
CLCW
31: 0 Operational Control Field (OCF) - CLCW data (bit 31 MSB, bit 0 LSB)
Table 241.Signal definitions
Signal name Type Function Active
TCACT[4:0] Input Bit Lock (the signals are OR-ed internally) High
TCRFAVL[4:0] Input RF Available (the signals are OR-ed internally)High
TMDO Output Serial bit data -
TMCLKO Output Serial bit data clock -
TMCLKI Input Transponder clock Rising