Unibrain Fire-i 530/550/630/830/850 Operation Manual
Page 54
4.8.
Time Stamp Register
The Time stamp register may be inquired from the Native FireWire Bus (IEEE-1394.a) CYCLE_TIME registers as
follows. You may also get the same value from user defined registers but we recommend this.
Address
Description( bit : msb*)
Read/Write
0xF0000200
CYCLE_TIME
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
SECONDS COUNT
CYCLE COUNT
CYCLE OFFSET
Bit Numbe r
Bit Nam e
Function
DIR
Description
0 - 6
7 - 19
20 - 31
SECONDS COUNT
CYCLE COUNT
CYCLE OFFSET
Seconds Coun t
Cycle Coun t
Cycle Offset
R/W
R/W
R/W
1 Hz c ycle timer counte r
8,000 Hz c ycle timer counte r
24.576 MHz c ycle timer counte r
Read