194
AM3359, AM3358, AM3357, AM3356, AM3354, AM3352, AM3351
SPRS717J – OCTOBER 2011 – REVISED APRIL 2016
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Peripheral Information and Timings
Copyright © 2011–2016, Texas Instruments Incorporated
7.10 LCD Controller (LCDC)
The LCDC consists of two independent controllers, the raster controller and the LCD interface display
driver (LIDD) controller. Each controller operates independently from the other and only one of them is
active at any given time.
•
The raster controller handles the synchronous LCD interface. It provides timing and data for constant
graphics refresh to a passive display. It supports a wide variety of monochrome and full-color display
types and sizes by use of programmable timing controls, a built-in palette, and a gray-scale and
serializer. Graphics data is processed and stored in frame buffers. A frame buffer is a contiguous
memory block in the system. A built-in DMA engine supplies the graphics data to the raster engine
which, in turn, outputs to the external LCD device.
•
The LIDD controller supports the asynchronous LCD interface. It provides full-timing programmability of
control signals (CS, WE, OE, ALE) and output data.
The maximum resolution for the LCD controller is 2048 × 2048 pixels. The maximum frame rate is
determined by the image size in combination with the pixel clock rate.
Table 7-73. LCD Controller Timing Conditions
PARAMETER
MIN
TYP
MAX
UNIT
Output Condition
C
LOAD
Output load capacitance
LIDD mode
5
60
pF
Raster mode
3
30
7.10.1 LCD Interface Display Driver (LIDD Mode)
Table 7-74. Timing Requirements for LCD LIDD Mode
(see
through
NO.
OPP100
UNIT
MIN
MAX
16
t
su(LCD_DATA-LCD_MEMORY_CLK)
Setup time, LCD_DATA[15:0] valid before
LCD_MEMORY_CLK high
18
ns
17
t
h(LCD_MEMORY_CLK-LCD_DATA)
Hold time, LCD_DATA[15:0] valid after
LCD_MEMORY_CLK high
0
ns
18
t
t(LCD_DATA)
Transition time, LCD_DATA[15:0]
1
3
ns
Table 7-75. Switching Characteristics for LCD LIDD Mode
(see
through
NO.
PARAMETER
OPP100
UNIT
MIN
MAX
1
t
c(LCD_MEMORY_CLK)
Cycle time, LCD_MEMORY_CLK
23.7
ns
2
t
w(LCD_MEMORY_CLKH)
Pulse duration, LCD_MEMORY_CLK high
0.45t
c
0.55t
c
ns
3
t
w(LCD_MEMORY_CLKL)
Pulse duration, LCD_MEMORY_CLK low
0.45t
c
0.55t
c
ns
4
t
d(LCD_MEMORY_CLK-LCD_DATAV)
Delay time, LCD_MEMORY_CLK high to
LCD_DATA[15:0] valid (write)
7
ns
5
t
d(LCD_MEMORY_CLK-LCD_DATAI)
Delay time, LCD_MEMORY_CLK high to
LCD_DATA[15:0] invalid (write)
0
ns
6
t
d(LCD_MEMORY_CLK-LCD_AC_BIAS_EN)
Delay time, LCD_MEMORY_CLK high to
LCD_AC_BIAS_EN
0
6.8
ns
7
t
t(LCD_AC_BIAS_EN)
Transition time, LCD_AC_BIAS_EN
1
10
ns
8
t
d(LCD_MEMORY_CLK-LCD_VSYNC)
Delay time, LCD_MEMORY_CLK high to
LCD_VSYNC
0
7
ns
9
t
t(LCD_VSYNC)
Transition time, LCD_VSYNC
1
10
ns
10
t
d(LCD_MEMORY_CLK-LCD_HYSNC)
Delay time, LCD_MEMORY_CLK high to
LCD_HSYNC
0
7
ns