Troubleshooting; Hsstp Probe Led Errors - ARM DSTREAM-HT Getting Started Manual

DSTREAM-HT Getting Started Guide

5. Troubleshooting

This chapter describes the steps that you need to take when your DSTREAM-HT system does not
function as expected.
For more information about troubleshooting and support for your DSTREAM-HT system, see the
Arm DSTREAM-HT web page

5.1 HSSTP probe LED errors

Lists the LED combinations that indicate HSSTP probe errors, and how to resolve them.
If your HSSTP probe detects bad signal integrity or an error state, the Chan up or one or more of
the Errors section LEDs on the probe illuminates red.
Bad signal integrity
Bad signal integrity on any of the HSSTP lanes causes one or more of the lanes to fail link training.
This causes the HSSTP probe to reach an error state.
Indicated by: A red LED for the affected lane, in the Lanes LED section on the probe.
Solution
Using Arm ® Development Studio, open the configuration file for your target and check that:
1. The lane speed option,
2. The lane width option,
3. The equalization mode option,
If these steps do not resolve the issue,
Disparity error
A disparity error is when there is a bit error on the link.
Indicated as follows:
• A single disparity error is indicated by a red Soft LED in the Errors LED section on the probe.
• Multiple disparity errors are indicated by red Soft and Hard LEDs in the Errors LED section on
the probe.
Solution
1. Check all the cables are correctly connected on the HSSTP probe and target.
2. On your target, check the transmitter amplitude and pre-emphasis settings.
3. Use Arm Development Studio to reconnect to the target device.
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on the Arm Developer web site.
, is configured correctly.
HSSTP_SPEED
, is configured correctly.
HSSTP_LANES
HSSTP_RX_EQUALIZATION
contact Arm
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Document ID: 101760_1.0_02_en
, is configured correctly.
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Troubleshooting
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