Cypress Traveo S6J3200 Series Manuallines

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FPD-Link PCB Guidelines for the Traveo Family S6J3200 Series MCUs
AN211139 provides guidelines for PCB layout for the flat panel display link interface (FPD-Link) for Cypress's
Traveo™ Family S6J3200 Series MCUs.
1
Introduction
Traveo Family S6J3200 Series MCUs have a flat panel display link interface (FPD-Link, with TxCLK± and
TxDOUT[0:3]±), used to connect high-performance video displays. FPD-Link is a high-speed interface (max
350 Mbps/lane) using low-voltage differential signaling (LVDS).
The FPD-Link graphics display port of S6J3200 Series MCUs has the following characteristics:
High speed: Data rates up to 350 Mbps per lane
Low voltage swing: Approximately 350 mV
Five differential signals: TxCLK± and TxDOUT[0:3]±
Because of these characteristics, the PCB for FPD-Link cannot be treated as a simple group of traces. This
application note provides guidelines for the layout of the FPD-Link PCB for S6J3200 Series devices.
2
Recommended PCB Specifications
The following best practices are recommended for routing the LVDS signals used in an FPD-Link interface:
Use balanced transmission lines with a characteristic impedance of 100 Ω ±10%.
Avoid vias by using the programmable inversion and output signal selection
Ensure that the PCB design conforms to the parameters listed in
1
S6J3200 Series MCUs can select the output signal for FPD-Link. Refer to Chapter 30 in the
www.cypress.com
Associated Part Family:
Related Documents: For a complete list,
Document No. 002-11139 Rev. *A
Author: Hiroo Mizuno
Traveo Family S6J3200 Series
Related Application Notes:
[1]
abilities of the FPD-Link Controller.
Table
1.
Hardware Manual
AN211139
AN213250
click here.
for more details.
1

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Summary of Contents for Cypress Traveo S6J3200 Series

  • Page 1 AN213250 Related Documents: For a complete list, click here. AN211139 provides guidelines for PCB layout for the flat panel display link interface (FPD-Link) for Cypress’s Traveo™ Family S6J3200 Series MCUs. Introduction Traveo Family S6J3200 Series MCUs have a flat panel display link interface (FPD-Link, with TxCLK± and TxDOUT[0:3]±), used to connect high-performance video displays.
  • Page 2 LVDS signals are ground-referenced. When implementing balanced microstrip transmission lines, it is preferred to have them coupled to a ground plane instead of a power plane. When coupled to a power plane, noise on that supply is coupled as common- mode noise to the signals on the transmission lines. www.cypress.com Document No. 002-11139 Rev. *A...
  • Page 3 Type-II: Use twice the space between the traces of a balanced microstrip transmission line and other balanced transmission lines (see Equation 2). �� = 2×�� Equation 2 ���� ���� Figure 3 shows two examples of balanced transmission lines spacing. www.cypress.com Document No. 002-11139 Rev. *A...
  • Page 4 10 ps. When there is a difference in length between the true and complement traces of a balanced transmission line, the electromagnetic field between For microstrip transmission lines in FR-4 with a dielectric constant of 4.7 www.cypress.com Document No. 002-11139 Rev. *A...
  • Page 5 As noted in Table 1, Cypress recommends limiting the mismatch between true and complement signals within a balanced pair (L ) to no more than 5 mm or 50 ps. This limitation is based on the rise / fall time of the signals on these transmission lines (typically 400 ps), and remains the same regardless of the signaling rate.
  • Page 6 When possible, place the IC as close as possible to the FPD-Link connector. Figure 7 shows the recommended routing between the IC and connector. Figure 7. Distance Between IC and Connector Connector Other parts Connector Other parts S6J3200 S6J3200 Distant Close www.cypress.com Document No. 002-11139 Rev. *A...
  • Page 7: Related Documents

    Figure 8. Signal Assignment to the Connector Short lead Long lead Same length Related Documents ▪ S6J3200 Series 32-bit Microcontroller Traveo Family Hardware Manual ▪ Traveo Family Hardware Manual Platform part ▪ S6J3200 Series 32-bit Microcontroller Traveo Family Data Sheet www.cypress.com Document No. 002-11139 Rev. *A...
  • Page 8: Document History

    Document Title: AN211139 - FPD-Link PCB Guidelines for the Traveo Family S6J3200 Series MCUs Document Number: 002-11139 Revision Orig. of Submission Description of Change Change Date 5131209 HMIZ 10/21/2016 New application note. 6205704 YSAT 06/13/2018 Adapted new Cypress logo www.cypress.com Document No. 002-11139 Rev. *A...
  • Page 9: Worldwide Sales And Design Support

    Cypress is not liable, in whole or in part, and you shall and hereby do release Cypress from any claim, damage, or other liability arising from or related to all Unintended Uses of Cypress products.

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