Diamond Systems Poseidon User Manual page 76

Waveform Generator Control: Base+14 (Read/Write)
Bit: 7
Name: DEPTH3
DEPTH3-0 These bits define the size of the D/A waveform buffer. The depth is based on this equation:
Depth = [(DEPTH3-0) + 1] * 64
This allows valid depth values from 64 to 1024 samples.
The waveform generator frame pointer will return to 0 whenever it hits either 1024 or the depth value
indicated above.
WGCH1-0 These two bits combine to choose how many codes are output on each frame.
WGSRC1-0 These two bits combine to choose which trigger source is used to increment the waveform by one
frame.
Waveform Generator Command: Base+15 (Write)
Bit: 7
Name: -
WGINC Begin or resume the waveform generator.
WGRST Pause/stop the waveform generator. The current position in memory is saved for the next
begin/resume, or can be reset using WGRST.
WGPS Reset the waveform generator to output from the beginning of the D/A code buffer.
WGSTRT Force the waveform generator to increment one frame.
Note: Only one bit can be set to 1 at a time. Bits are processed MSB to LSB. The first 1 bit determines which
command is executed.
Diamond Systems Corporation
6 5
DEPTH2 DEPTH1
WGCH1
0
0
1
WGSRC1 WGSRC0
0 0
0 1
1 0
1 1
6 5
- -
Poseidon User Manual
4 3
DEPTH0 WGCH1
WGCH0 Description
0 One code per frame
1 Two codes per frame
X Four codes per frame
Description
Manual (using WGINC)
Counter 0 output
Counter 1/2 output
External trigger (CN12, pin 31)
4 3
- WGINC
2 1
WGCH0 WGSRC1 WGSRC0
2 1
WGRST WGPS WGSTRT
0
0
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