Spectrum Brands MC.31XX - Manual (Page 61)

Clock generation External clocking
(c) Spectrum GmbH 61
How to read this table? If you have activated all eight channels and are using the board in standard mode (not FIFO) and your external clock
is known to be around 15 MHz you have to set the EXRANGE_BURST_L for the external range.
Example:
External clock with divider
The extra clock divider can be used to divide an external fed in clock by a fixed value. The external clock must be > 1 MS/s. This divided
clock is used as a sample clock for the board.
Available divider values
ch0 ch1 ch2 ch3 ch4 ch5 ch6 ch7 Mode EXRANGE_SINGLE EXRANGE_BURST_S EXRANGE_BURST_M EXRANGE_BURST_L EXRANGE_BURST_XL
x Standard/FIFO < 5 MHz 5 MHz - max
x x Standard/FIFO < 2.5 MHz 2.5 MHz - 7.5 MHz 7.5 MHz - 17.5 MHz 17.5 MHz - 36 MHz > 36 MHz
x x Standard < 5 MHz 5 MHz - max
x x FIFO < 2.5 MHz 2.5 MHz - 7.5 MHz 7.5 MHz - 17.5 MHz 17.5 MHz - 36 MHz > 36 MHz
x x x x Standard < 2.5 MHz 2.5 MHz - 7.5 MHz 7.5 MHz - 17.5 MHz 17.5 MHz - 36 MHz > 36 MHz
x x x x FIFO < 1.3 MHz 1.3 MHz - 3.8 MHz 3.8 MHz - 8.8 MHz 8.8 MHz - 18 MHz > 18 MHz
x x x x Standard/FIFO < 1.3 MHz 1.3 MHz - 3.8 MHz 3.8 MHz - 8.8 MHz 8.8 MHz - 18 MHz > 18 MHz
x x x x x x x x Standard < 1.3 MHz 1.3 MHz - 3.8 MHz 3.8 MHz - 8.8 MHz 8.8 MHz - 18 MHz > 18 MHz
x x x x x x x x FIFO < 0.7 MHz 0.7 MHz - 1.9 MHz 1.9 MHz - 4.4 MHz 4.4 MHz - 9 MHz > 9 MHz
SpcSetParam (hDrv, SPC_CHENABLE, CHANNEL0 | CHANNEL1 | CHANNEL2 | CHANNEL3); // activate 4 channels
SpcSetParam (hDrv, SPC_EXTERNALCLOCK, 1); // activate external clock
SpcSetParam (hDrv, SPC_EXTERNRANGE, EXRANGE_BURST_M); // set external range to Burst M
Register Value Direction Description
SPC_CLOCKDIV 20040 r/w Extra clock divider for external samplerate. Allowed values are listed below
1 2 4 8 10 16 20 40 50 80 100 200
400 500 800 1000 2000