CYS25G0101DX-ATC Evaluation Board User’s Guide
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6.4 Set-up for Testing the TX PLL in Parallel Line Loopback Mode
Figure 11 illustrates the set-up for testing the TX PLL in Parallel Line Loopback Mode. The equipment list :
1. Evaluation Board – Cypress CYS25G0101DX Evaluation Board
2. Pattern Generator – Tektronix D3186 Pattern Generator
3. Error Detector– Tektronix D3286 Error Detector
4. Pulse Generator - HP 8133A Pulse Generator
5. Power Supply – HP E3631A DC Power Supply
* All equipment in the list is for reference only
Figure 11. Equipment Set-up For Testing the TX PLL in Parallel Line Loopback Mode
IN+ IN- OUT-OUT+
Tektronix D3186
Pattern Generator
Cypress CYS25G0101DX
Evaluation Board
Tektronix D3286
Pattern Analyzer
CLK2
50ΩTerminator For OUT-
HP E3631A
Power Supply
CLK1
External
Input
External
Input
Output+
Output-
1. Disconnect CLKVCC
2. Remove the OSC
3. Place C400 on C402 and
C401 on C403 positions
HP 8133A Pulse Generator
(configure to Output = Input Clock divided by 16)
[+] Feedback