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The IPU in i.MX51 (IPUv3EX) Maximal Resolution & Refresh Rate
Capabilities
·
Maximal display resolution: 4096x2048 pixels
·
Maximal pixel rate: 110 MP/sec
Display refresh rate
·
The maximal refresh rate is: 110M / (W * H * B)
W*H is the display resolution
B is a factor >1 reflecting blanking overhead, e.g. as specified by VESA, CEA-
861-D, etc.
·
The table provides the maximal refresh rates for some typical resolutions
·
Usually, the refresh rate is required to be at least 60 Hz, to prevent blinking.
Interlaced TV is an exception: HD1080i requires only 30 Hz and is, therefore,
supported
·
The blanking overhead factor assumed for the calculation is 1.3.
The actual factor depends on the display and is often closer to 1, allowing higher
resolutions @ 60 Hz (e.g. SXGA+).
For example, for HD1080, the standard specifies B~1.2
·
Note: these rates refer only to screen refresh, gated by the capabilities of the
display port. A full use case typically includes additional activities and to confirm
its support with a given refresh rate, additional aspects video processing
capabilities, capacity of the memory system, etc. should be also analyzed
carefully.
800 x 480 (WVGA)
~220 Hz
1280 x 720 (HD720) ~92 Hz
1024 x 768 (XGA) ~108 Hz
1920 x 1080 (HD1080) ~41 Hz
2048 x 1536 (4XGA) ~27 Hz
10
8.39
2048
x
4096
4K x 2K
21
4.10
1600
x
2560
4WXGA
27
3.15
1536
x
2048
4XGA
37
2.30
1200
x
1920
WUXGA
41
2.07
1080
x
1920
HD1080
44
1.92
1200
x
1600
UXGA
48
1.76
1050
x
1680
WSXGA+
58
1.47
1050
x
1400
SXGA+
65
1.31
1024
x
1280
SXGA
65
1.30
900
x
1440
WXGA+
81
1.05
768
x
1366
WXGA
83
1.02
800
x
1280
WXGA
92
0.92
720
x
1280
HD720
108
0.79
768
x
1024
XGA
138
0.61
600
x
1024
WSVGA
176
0.48
600
x
800
SVGA
204
0.41
576
x
720
NTSC
220
0.38
480
x
800
WVGA
245
0.35
480
x
720
PAL
275
0.31
480
x
640
VGA
1102
0.08
240
x
320
QVGA
Total [MP]
Height
x
Width
Max
Refresh
Rate [Hz]
Resolution
Name