COBHAM GR740 User Manual

GR740-UM-DS, Nov 2017, Version 1.7 374 www.cobham.com/gaisler
GR740
Table 470. 0x004 - CONF 1 - Configuration 1
31 30 29 0
-FSINC
00
rrw
31: 30 RESERVED
29: 0 Frequency synthesizer (FSINC) - Increment value of the Frequency Synthesizer which is added to
the counter every system clock cycle. It defines the frequency of the synthesized reference time.
Refer the spreadsheet provided along with this document to obtain this value.
Table 471. 0x008 - CONF 2 - Configuration 2
31 87 0
CV ETINC
00
rw rw
31: 8 Compensation Value (CV) - (not usable in this implementation)
7: 0 Elapsed Time Increment (ETINC) - Value of the Elapsed Time counter is to be incremented each
time when the Frequency Synthesizer wraps around.
Refer the spreadsheet provided along with this document to obtain this value.
Table 472. 0x00C - CONF3 - Configuration 3
31 22 21 16 15 14 13 12 11 10 9 5 4 0
-STM-DI6
4R
DI6
4T
DI6
4
DI INRX INTX
0 0 0 0000 0 0
r rw r rw rw rw rw rw rw
31: 22 RESERVED
21: 16 SpaceWire Time-Code Mask (STM) - Mask For TSTC register available at Time-Stamp SpaceWire
Time-Code and Preamble Field Tx register.
Value all bits zero will send Distributed interrupts at all SpaceWire Time-Codes irrespective of any
values in TSTC register.
Value all ones will send Distributed interrupts at complete match of SpaceWire Time-Code with
TSTC register.
(only for initiator)
15: 14 RESERVED
13: DI64R - The MSb for received Distributed Interrupt when interrupt numbers 32 to 63 is used. Possi-
ble only for DI = ‘0’ (only interrupt mode) and DI64 is enabled.
Note: Only available in silicon revision 1.
12: DI64T - The MSb for transmitted Distributed Interrupt when interrupt numbers 32 to 63 is used.
Possible only for DI = ‘0’ (only interrupt mode) and DI64 is enabled.
Note: Only available in silicon revision 1.
11: Enable Distributed Interrupts 64 (DI64) - when set all 64 Distributed interrupt numbers can be used
for latency calculation. Possible only for DI = ‘0’ (only interrupt mode).
Note: Only available in silicon revision 1.
10: Distributed Interrupt (DI) - Distributed Interrupt method, when set interrupt and acknowledge mode
else only interrupt mode. (only for target)
9: 5 Interrupt Received (INRX) - The distributed interrupt number received by initiator or target.
4: 0 Interrupt Transmitted (INTX) - The distributed interrupt number transmitted by initiator or target.

COBHAM GR740 Specifications

General

Brand	COBHAM
Model	GR740
Category	Computer Hardware
Language	English