PulseBlasterESR-PRO
Output Pattern and Control Word
Table 5 shows the output pattern and control bit assignments of the 24-bit output/control word.
Bit #
Bit #
Function
23
Controls Pulse Length for BNC connectors
11
Output Connector labeled Flag0..11, Pin 12
22
Controls Pulse Length for BNC connectors
10
Output Connector labeled Flag0..11, Pin 11
21
Controls Pulse Length for BNC connectors
9
Output Connector labeled Flag0..11, Pin 10
20
Output Connector labeled Flag12..23, Pin 9
8
Output Connector labeled Flag0..11, Pin 9
19
Output Connector labeled Flag12..23, Pin 8
7
Output Connector labeled Flag0..11, Pin 8
18
Output Connector labeled Flag12..23, Pin 7
6
Output Connector labeled Flag0..11, Pin 7
17
Output Connector labeled Flag12..23, Pin 6
5
Output Connector labeled Flag0..11, Pin 6
16
Output Connector labeled Flag12..23, Pin 5
4
Output Connector labeled Flag0..11, Pin 5
15
Output Connector labeled Flag12..23, Pin 4
3
Output Connector labeled Flag0..11, Pin 4
14
Output Connector labeled Flag12..23, Pin 3
2
Output Connector labeled Flag0..11, Pin 3
13
Output Connector labeled Flag12..23, Pin 2
1
Output Connector labeled Flag0..11, Pin 2
12
Output Connector labeled Flag12..23, Pin 1
0
Output Connector labeled Flag0..11, Pin 1
Table 5:
Output Pattern and Control Word Bits.
When the bit corresponding to an IDC output connector is one, the voltage will be high for the
duration of the instruction. If the bit is zero, the voltage will be low for the duration of the instruction.
Short Pulse Feature
The Short Pulse feature utilizes the upper three bits of the instruction flag output bits (bits 21 to 23) to
control the number of clock cycles output flags are enabled. This allows for short pulses down to a single
clock cycle during the instruction period. Note that
all flags
are synchronized to this instruction period. It
is possible to create pulses longer than this length by setting a channel on for multiple instructions, so the
Short Pulse feature does not limit the maximum length of pulses. The following table provides information
on using the Short Pulse feature.
2019/09/26
SpinAPI Define
Bits 21-23
Clock Periods Pulse Length at 500 MHz (ns)
-
000
-
Always Low
ONE_PERIOD
001
1
2
TWO_PERIOD
010
2
4
THREE_PERIOD
011
3
6
FOUR_PERIOD
100
4
8
FIVE_PERIOD
101
5
10
ON
111
-
No Short Pulse
Table 6:
Short Pulse Feature Characteristics.
