Atmel SpaceWire Router SpW-10X - Manual (Page 7)

Ref.: UoD_SpW-10X_
UserManual
Issue: 3.4
SpW-10X
SpaceWire Router
User Manual Date: 11 th
July 2008
Preliminary
7
9.5.5 Time-Code Register ................................................................................................................ 121
9.5.6 Device Manufacturer and Chip ID Register ............................................................................ 122
9.5.7 General Purpose Register....................................................................................................... 123
9.5.8 Time-Code Enable Register.................................................................................................... 123
9.5.9 Transmit Clock Control Register ............................................................................................. 124
9.5.10 Destination Key Register....................................................................................................... 127
9.5.11 Unused Registers and Register Bits ..................................................................................... 127
9.5.12 Empty packets....................................................................................................................... 127
9.6 WRITING TO A READ-ONLY REGISTER................................................................................. 127
10. SWITCHING CHARACTERISTICS ........................................................................................... 128
10.1 CLOCK AND RESET TIMING PARAMETERS........................................................................ 128
10.2 SERIAL SIGNALS TIMING PARAMETERS ............................................................................ 128
10.3 EXTERNAL PORT TIMING PARAMETERS............................................................................ 129
10.4 TIME-CODE INTERFACE TIMING PARAMETERS................................................................ 130
10.5 ERROR/STATUS INTERFACE TIMING PARAMETERS........................................................ 131
10.6 LATENCY AND JITTER........................................................................................................... 133
10.6.1 Clock Periods ........................................................................................................................ 133
10.6.2 Switching Latency ................................................................................................................. 133
10.6.3 Router Latency...................................................................................................................... 133
10.6.4 Time-code Latency................................................................................................................ 134
10.6.5 Time-code Jitter .................................................................................................................... 135
10.6.6 200M bits/s Input and Output Bit Rate Example................................................................... 135
11. ELECTRICAL CHARACTERISTICS......................................................................................... 136
11.1 DC CHARACTERISTICS ......................................................................................................... 136
11.2 ABSOLUTE MAXIMUM RATINGS .......................................................................................... 137
11.3 RELIABILITY INFORMATION.................................................................................................. 137
12. APPLICATION GUIDELINES.................................................................................................... 138
12.1 EXAMPLE CIRCUIT DIAGRAM............................................................................................... 138
12.2 PCB DESIGN AND LAYOUT GUIDELINES ............................................................................ 140
12.2.1 CLK ....................................................................................................................................... 140
12.2.2 RST_N................................................................................................................................... 140
12.2.3 Chip Test Signals .................................................................................................................. 140
12.2.4 Power and Decoupling .......................................................................................................... 140
12.2.5 Ground .................................................................................................................................. 140
12.2.6 SpaceWire............................................................................................................................. 140