Delta Tau PMAC Pack, Справочник по аппаратуре

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PMAC-Pack
PMACPack Custom Configuration 51
E29 - E33: Phase Clock Frequency Control
Jumpers E29 through E33 control the speed of the phase clock, and, indirectly, the servo clock, which is
divided down from the phase clock (see E3 - E6). No more than 1 of these 5 jumpers may be on at a time.
If jumper E98 has been changed to connect pins 2-3 (default is 1-2), the phase clock frequency is exactly
1/2 that shown in the above table.
Note:
If E40-E43 are set so that the card has a software address other than @0, the phase
clock signal must be received over the serial port from card @0, so these jumpers
have no effect.
Table 4-11. E29 - E33: Phase Clock Frequency Control
Phase Clock Frequency
E29 E30 E31 E32 E33
19.6608MHz
Master Clock 29.4912 MHz
Master Clock
Default & Physical Layout
E33 E32 E31 E30 E29
ON OFF OFF OFF OFF 2.26 kHz 3.39 kHz
OFF ON OFF OFF OFF 4.52 kHz 6.78 kHz
OFF OFF ON OFF OFF 9.04 kHz 13.55 kHz
OFF OFF OFF ON OFF 18.07 kHz 27.10 kHz
OFF OFF OFF OFF ON 36.14 kHz 54.21 kHz
E34 - E38: SLCK Frequency Control
Jumpers E34 - E38 control the encoder sampling clock (SCLK) used by the gate array ICs. No more than
1 of these 5 jumpers may be on at a time.
Table 4-12. E34 - E38: Encoder Sampling Clock Frequency Control
SCLK Clock Frequency
E34A E34 E35 E36 E37 E38
19.6608 MHz Master Clock
Default & Physical Layout
E34A E34 E35 E36 E37 E38
ON OFF OFF OFF OFF OFF 19.6608 kHz
OFF ON OFF OFF OFF OFF 9.8304 kHz E34 ON
OFF OFF ON OFF OFF OFF 4.9152 kHz
OFF OFF OFF ON OFF OFF 2.4576 kHz
OFF OFF OFF OFF ON OFF 1.2288 kHz
OFF OFF OFF OFF OFF ON External clock 1 to 30 MHz
maximum input on CHC4 & CHC4/