2-6
IM 701730-51E
• Selecting the Read Direction of the I/O Data Bits
6.
Use jog shuttle & SELECT to set the read direction of the I/O data bits to MSB
First or LSB First (Bit Order box).
Set the read direction of the I/O data
bits to MSB First or LSB First.
• Selecting the Items Used as a Trigger Condition
7.
Use job shuttle & SELECT to select whether Assertion of SS (CH4), A Pattern,
Byte Count, and B Pattern are used as trigger conditions. If A Pattern is turned
ON, proceed to step 8. To set the Byte Count, proceed to step 11. If B Pattern
is turned ON, proceed to step 12.
•
Highlighting of the mark to the left of each item indicates that it is used as a trigger
condition.
•
Assertion of SS (CH4) and Byte Count items are always used as trigger conditions (the
mark to the left is always highlighted).
•
If you do not wish to use byte count as a trigger condition, set Byte Count to 0 (see
step 11).
When Using Pattern A as a Trigger Condition
8.
Use jog shuttle & SELECT to set the data length of the determination pattern to
be specified from 1 to 8 bytes (Data Byte box). The number of bytes displayed
in the A Pattern box is set to the number of bytes that matches the selected
result.
9.
Use jog shuttle & SELECT to set the determination pattern for each byte in
hexadecimal or binary (A Pattern box). When determination is not to be
performed, select X.
10.
Use jog shuttle & SELECT to set the condition of Pattern A to True or False
(Condition box).
Select this when using
pattern A as a trigger
condition.
Select the data length of
Pattern A in the range of 1
to 8 bytes.
Set the Pattern A condition to
True or False.
Set the determination pattern
per byte using hexadecimal or
binary values.
When Setting the Byte Count
11.
Use jog shuttle & SELECT to set the byte count in the range of 0 to 1000 bytes
(Byte Count box).
•
If you do not wish to use byte count as a trigger condition, set the value to 0.
•
You can also set the byte count using the soft key that appears at the right of the
ENHANCED menu (a menu that appears when you carry out steps 1 to 3 on the
previous page).
Set the byte count in the range
of 0 to 1000 bytes.
2.4 Setting SPI Bus Signal Acquisition Conditions
