Chapter 1
Overview
Backplane (Fabric)
38
The HSO connects to the system backplane through an HMZD2X10 right-angle receptacle.
sx2000 RCS Module
The sx2000 RCS module supplies clocks to the Superdome sx2000 backplane, communicates clock alarm to
the RPM, and accepts control input from the RPM. It has an I2C EEPROM on the module so that the the
firmware can inventory the module on system power up.
The RCS supplies 16 copies of the sine wave system clock to the sx2000 system backplane. Eight copies go to
the eight cell boards, six copies to the six XBCs on the system backplane, and two copies to the backplane
clock power detector.
In normal operation the RCS selects one of the two HSOs as the source of clocks for the platform. Which HSO
is selected depends whether the HSO is plugged into the backplane and on whether it has a valid output level.
This selection is overridden if there is a connection from the clock input MCX connector on the master
backplane. Figure 1-5 shows the locations of the HSOs and RCS on the backplane.
Figure 1-5
Locations of HSO and RCS
If only one HSO is plugged in and its output is of valid amplitude then it is selected. If its output is valid, then
a green LED on the HSO is lit. If its output is not valid, then a yellow LED on the HSO is lit and an alarm
signal is sent from the RCS to the RPM. The RCS provides a clock that is approximately 100 KHZ less than
the correct frequency even if the output of the HSOs are not of valid amplitude or no HSOs plugged in.
If both HSOs are plugged in and their output amplitudes are valid, then one of the two is selected as the clock
source by logic on the RCS. The green LEDs on both HSOs will be lit.
HSO 0
HSO 1
RCS
Содержание Integrity Superdome sx2000
Страница 8: ...Contents 8 ...
Страница 10: ...Tables 10 ...
Страница 14: ...Figures 14 ...
Страница 53: ...Chapter 1 Overview New Server Cabling 53 Figure 1 11 Backplane Cables ...
Страница 119: ...Chapter 3 Installing the System Turning On Housekeeping Power 119 Figure 3 37 BPS LEDs BPS LEDs ...
Страница 169: ...Appendix A 169 A sx2000 LEDs ...
Страница 174: ...Appendix A sx2000 LEDs 174 ...
Страница 187: ...Appendix B Management Processor Commands MP Command HE 187 Example B 11 HE Command ...
Страница 199: ...Appendix B Management Processor Commands MP Command PS 199 Example B 20 PS Command ...
Страница 212: ...Appendix B Management Processor Commands MP Command XD 212 ...
Страница 224: ...Appendix C Powering the System On and Off Turning On Housekeeping Power 224 Figure C 14 BPS LEDs BPS LEDs ...
Страница 230: ...Appendix D Templates Templates 230 Figure D 2 SD16 and SD32 Space Requirements ...
Страница 233: ...Appendix D Templates Templates 233 Figure D 4 Computer Floor Template ...
Страница 234: ...Appendix D Templates Templates 234 Figure D 5 Computer Floor Template ...
Страница 235: ...Appendix D Templates Templates 235 Figure D 6 Computer Floor Template ...
Страница 236: ...Appendix D Templates Templates 236 Figure D 7 Computer Floor Template ...
Страница 237: ...Appendix D Templates Templates 237 Figure D 8 Computer Floor Template ...
Страница 238: ...Appendix D Templates Templates 238 Figure D 9 SD32 and SD64 and I O Expansion Cabinet Templates ...
Страница 239: ...Appendix D Templates Templates 239 Figure D 10 SD32 and SD64 and I O Expansion Cabinet Templates ...
Страница 240: ...Appendix D Templates Templates 240 Figure D 11 SD32 and SD64 and I O Expansion Cabinet Templates ...
Страница 241: ...Appendix D Templates Templates 241 Figure D 12 SD32 and SD64 and I O Expansion Cabinet Templates ...
Страница 242: ...Appendix D Templates Templates 242 Figure D 13 SD32 and SD64 and I O Expansion Cabinet Templates ...
Страница 243: ...Appendix D Templates Templates 243 Figure D 14 SD32 and SD64 and I O Expansion Cabinet Templates ...
Страница 244: ...Appendix D Templates Templates 244 ...
Страница 247: ...Index 247 W wiring check 101 wrist strap usage 76 ...