PTN3700 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 3 — 12 October 2011 30 of 43
NXP Semiconductors
PTN3700
1.8 V simple mobile interface link bridge IC
12. Application information
12.1 Typical lane and PCLK configurations
The PTN3700 supports PCLK (pixel clock) frequencies from 4 MHz to 65 MHz over 1, 2 or
3 data lanes. Table 23
shows the typical number of data lanes needed, assuming blanking
overhead of 20 %. Note that 20 % overhead is an example value for illustration/calculation
purposes only and not a requirement.
12.2 Pin configurations for various topologies of PCB
There are two input pins, PSEL1 and PSEL0, on the PTN3700 that allow for pinning order
configurations.
PSEL1 will change the pinning order of the serial signals, and allow for various topologies
of PCB or flex layout without crossing the high-speed differential traces. The example
shown in Figure 23
has set PSEL1 = 0 at receiver side, and PSEL1 = 1 at the transmitter
to avoid the traces crossing. Figure 24
shows another configuration, which has PSEL1 = 1
at receiver, and PSEL1 = 0 at transmitter.
PSEL0 can configure the pinning order of the parallel signals, and enables the easy
introduction of the PTN3700 into an existing parallel design avoiding board re-layout.
Figure 23
and Figure 24 show two configuration examples.
Table 23. Typical PCLK and number of data lanes
Panel Horizontal Vertical Color
bit
Other
bits
Frame
rate
(Hz)
Blanking
overhead
Pixel
clock
(MHz)
Serial aggregate data rate
(Mbit/s)
1-lane 2-lane 3-lane
QVGA 240 320 18 12 60 20 % 5.5 165.9
WQVGA 400 240 18 12 60 20 % 6.9 207.4
CIF+ 352 416 18 12 60 20 % 10.5 316.3 316.3
HVGA 320 480 24 6 60 20 % 11.1 331.8 331.8
VGA 640 480 24 6 60 20 % 22.1 663.6 663.6
WVGA 854 480 24 6 60 20 % 29.5 885.4 885.4
SVGA 800 600 24 6 60 20 % 34.6 1036.8 1036.8
XGA 1024 768 24 6 60 20 % 56.6 1698.7
720p 1280 720 24 6 60 15 % 63.6 1909.7