DS90UR905QSQ/NOPB National Semiconductor, DS90UR905QSQ/NOPB Datasheet - Page 33

• Manufacturer Part Number: DS90UR905QSQ/NOPB
• Description: IC SER/DESERIAL 24BIT 48LLP
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of DS90UR905QSQ/NOPB

• Function: Serializer
• Data Rate: 1.82Gbps
• Input Type: Parallel
• Output Type: Serial
• Number Of Inputs: 24
• Number Of Outputs: 1
• Voltage - Supply: 1.71 V ~ 1.89 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 48-WFQFN, Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

FIGURE 28. BIST Mode Flow Diagram
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FIGURE 29. BIST Waveforms
33
BER Calculations
It is possible to calculate the approximate Bit Error Rate
(BER). The following is required:
•
•
•
The BER is less than or equal to one over the product of 24
times the PCLK rate times the test duration. If we assume a
65MHz PCLK, a 10 minute (600 second) test, and a PASS,
the BERT is
The BIST mode runs a check on the data payload bits. The
LOCK pin also provides a link status. It the recovery of the C0
and C1 bits does not reconstruct the expected clock signal,
the LOCK pin will switch Low. The combination of the LOCK
and At-Speed BIST PASS pin provides a powerful tool for
system evaluation and performance monitoring.
Pixel Clock Frequency (MHz)
BIST Duration (seconds)
BIST test Result (PASS)
≤
1.07 X 10E-12
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