NPM Motionnet G9001A, Руководство пользователя

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DA70131-1/3E
V-1
V. Troubleshooting
During the initial design stage, your system may not function normally due to simple misunderstandings, or you
may need to think about the problem differently.
If your system does not function normally after it is completely designed, check the following:
1. Checking the center device
1) Is power supplied properly? (3.3 V only)
2) Is the external clock signal stopped while a reset signal is input?
3) Is the reset signal released?
4) Is the clock signal supplied correctly? (40 MHz or 80 MHz)
5) Is the CKSL terminal set correctly? (LOW = 40 MHz, HIGH = 80 MHz)
6) Does the IF (1:0) terminal setting match the CPU that is connected?
7) Is the data transfer speed identical throughout the system?
8) Do the access times follow the specified timings?
9) Is there open state input terminal?
2. Checking the local devices
1) Is power supplied properly? (3.3 V only)
2) Is the external clock signal stopped while a reset signal is input?
3) Is the reset signal released?
4) Is the clock signal supplied correctly? (40 MHz or 80 MHz)
5) Is the CKSL terminal set correctly? (LOW = 40 MHz, HIGH = 80 MHz)
6) Does the data transfer speed match the setting on the center device?
7) When the DNSM is HIGH, is the address set properly through the
___
DN
(5:0) terminal? (The address must be set
using negative logic)
8) When the DNSM is LOW, are the signals from other local devices through the
_____
DNSO
terminal connected to
the
____
DNO terminal?
If this signal is held LOW, normal address setting cannot be performed.
9) Is one of the
_____
DNSO
signals connected to the
____
DNO
terminals of multiple local devices?
Connect the
_____
DNSO
signals in a daisy chain arrangement.
10) Is an
_____
SOEL
signal output by another local device connected to the SOEI terminal?
Only the SOEH signal can be connected to the SOEI terminal.
11) When the device being checked is an I/O device, is the PMD (2:0) terminal setting wrong? Is the combination
of input and output ports set properly?
12) When the device being checked is an I/O device, are the settings on
____
P0N
,
____
P1N
,
____
P2N
, and/or
____
P3N
correct?
Using these terminals, the signal logic can be changed for each port.
13) Is there an open state input terminal?
14) After releasing a reset, does the
_____
TOUT terminal go LOW? If so, a local device is waiting for a signal from the
center device. (The devices themselves must be appropriate.)