Table c-1. common clk10 routing configurations – National Instruments VXI-1394 User Manual
Page 48
Appendix C
Advanced Hardware Configuration Settings
© National Instruments Corporation
C-7
VXI-1394 User Manual for Windows
Table C-1 summarizes the most common configuration types.
Figure C-4 shows the default settings for the CLK10 switches. This
configuration is as follows:
•
CLK10 is generated from the onboard oscillator (S5).
•
The CLK10 signal is not terminated (S1).
•
The VXI-1394 receives the external CLK10 signal (S2).
•
The polarity of the CLK10 signal (S3) is irrelevant when the VXI-1394
receives the external CLK10 signal. However, it is configured to be
inverted when the CLK10 SMB is used as output.
Table C-1. Common CLK10 Routing Configurations
Description
Switches
S1
Terminate
S2
Direction
S3
Polarity
S5 CLK10
Source
Generate internal CLK10 with
onboard oscillator
N
IN
N/A
ONBRD
Generate internal CLK10 and drive
to external CLK SMB
N/A
OUT
NON
ONBRD
Generate internal CLK10 and drive
inverted to external CLK SMB
N/A
OUT
INV
ONBRD
Receive external CLK SMB and
drive to the backplane unterminated
N
IN
N/A
SMB
Receive external CLK SMB with
50
Ω termination and drive to the
backplane
Y
IN
N/A
SMB