User Manual
Table Of Contents
- Introduction TO QPHY-DDR3
- Signals measured
- DDR3 MEASUREMENT PREPARation
- Basic Functionality
- Using Qualiphy DDR3
- QualiPHY Compliance Test Platform
- QPHY-DDR3 Test Configurations
- 1) Clock tests DDR3-1333 (1 Probe)
- 2) CKdiff-DQse-DQSdiff 1333 Write Burst (3 Probes)
- 3) CKdiff-DQse-DQSdiff 1333 Read Burst (3 Probes)
- 4) Eye Diagram (3 Probes Debug)
- 5) Eye Diagram with CS Enabled (4 Probes Debug)
- 6) CKDiff-DQse-DQS-ADD/CTRLse (4 Probes Debug)
- 7) CKdiff-DQse-DQSp-DQsn (4 probes test, each DQS signal probed single ended)
- 8) CKp-CKn-DQse-DQSdiff (4 probe test, each CK signal is probed single ended)
- 9) Vref tests
- D1) Demo of All Tests
- QPHY-DDR3 Variables
- QPHY-DDR3 Limit Sets
- QPHY-DDR3 Tests
- Clock Tests
- tCK(avg), Average Clock Period
- tCK(abs), Absolute Clock Period
- tCH(avg), Average High Pulse Width
- tCL(avg), Average Low Pulse Width
- tCH(abs), Absolute High Pulse Width
- tCL(abs), Absolute Low Pulse Width
- tJIT(duty), Half Period Jitter
- tJIT(per), Clock Period Jitter
- tJIT(cc), Cycle to Cycle Period Jitter
- tERR(n per), Cumulative Error
- Eye Diagram
- Electrical Tests
- Timing Tests
- Four Probe tests measurements using ADDR/CTL
- Clock Tests
QPHY-DDR3 Software Opti on
917717 Rev C 31
Overall Write Latency
This is used to specify the Delay between DDR command (Write) to first data bit of related read burst.
This is needed when using the Chip Select line to correctly identify read and write bursts in multi-ranked
systems. This latency is measured in clock periods.
Demo Settings
Use Stored Waveforms
When enabled, previously stored DDR3 waveforms is used. The default is No.
Recalled Waveform File Index (5 digits)
Enter the 5 digits number corresponding to the index of the file you want to recall. The default is 00000.
Define format use d to set trace names
This setting stores a saved waveform naming format or convention. The choices are LeCroy or Dialog.
The LeCroy choice produces waveform names automatically by the software. Dialog prompts the user
for custom waveform names. The default setting is LeCroy.
Use Stor ed Trace for Speed Gr ade
This is an optimization used specifically to measure the clock frequency only once. Choose from Yes or
No values and the default selection is No.