S3C2416X RISC MICROPROCESSOR
LCD
CONTROLLER
21-3
2 FUNCTIONAL
DESCRIPTION
2.1 BRIEF OF THE SUB-BLOCK
The LCD controller consists of a VSFR, VDMA, VPRCS, VTIME, and video clock generator. The VSFR has 71
programmable register sets and two-256x25 palette memory, which are used to configure the LCD controller. The
VDMA is a dedicated LCD DMA, which it can transfer the video data in frame memory to VPRCS. By using this
special DMA, the video data can be displayed on the screen without CPU intervention. The VPRCS receives the
video data from VDMA and sends the video data through the data ports (RGB_VD, VEN_VD, or SYS_VD ) to the
display device (LCD) after changing them into a suitable data format, for example 8-bit per pixel mode (8 BPP
Mode) or 16-bit per pixel mode (16 BPP Mode). The VTIME consists of programmable logic to support the
variable requirement of interface timing and rates commonly found in different LCD drivers. The VTIME block
generates RGB_VSYNC, RGB_HSYNC, RGB_VCLK, RGB_VDEN, SYS_CS1, SYS_CS0, and so on.
2.2 DATA FLOW
FIFO is present in the VDMA. When FIFO is empty or partially empty, VDMA requests data fetching from the
frame memory based on the burst memory transfer mode(Consecutive memory fetching of 4 / 8 / 16 words per
one burst request without allowing the bus mastership to another bus master during the bus transfer). When bus
arbitrator in the memory controller accepts this kind of transfer request, there will be 4 /8 /16 successive word data
transfers from system memory to internal FIFO. The each size of FIFO is 32 words. The LCD controller has two
FIFOs because it needs to support the overlay window mode. In case of one screen display mode, the only one
FIFO should be used. The data through FIFO is fetched by VPRCS which has a blending, scheduling function for
the final image data. VPRCS supports overlay function that enables to overlay any image up to 2 window images
whose is smaller or same size can be blended with main window image with programmable alpha blending or
color (chroma) key function. Fig. 21-2 shows the data flow from system bus to the output buffer. VDMA has two
DMA channels. Alpha values written in SFR determine the level of blending. Data from Output buffer will be
appearing to the Video Data Port.
Содержание S3C2416
Страница 33: ...S3C2416X RISC MICROPROCESSOR PRODUCT OVERVIEW 1 5 3 BLOCK DIAGRAM Figure 1 1 S3C2416X Block Diagram ...
Страница 38: ...PRODUCT OVERVIEW S3C2416X RISC MICROPROCESSOR 1 10 153 AIN 1 U14 195 EINT 10 GPG2 K15 237 SDATA 14 C18 ...
Страница 122: ...BUS MATRIX EBI S3C2416X RISC MICROPROCESSOR 3 4 NOTES ...
Страница 204: ...DMA CONTROLLER S3C2416X RISC MICROPROCESSOR 8 18 NOTES ...
Страница 284: ...WATCHDOG TIMER S3C2416X RISC MICROPROCESSOR 11 6 NOTES ...
Страница 320: ...REAL TIME CLOCK S3C2416X RISC MICROPROCESSOR 13 16 NOTES ...
Страница 344: ...UART S3C2416X RISC MICROPROCESSOR 14 24 NOTES ...
Страница 380: ...USB2 0 DEVICE S3C2416X RISC MICROPROCESSOR 16 34 NOTES ...
Страница 432: ...2D S3C2416X RISC MICROPROCESSOR 18 38 NOTES ...
Страница 446: ...HS_SPI CONTROLLER S3C2416X RISC MICROPROCESSOR 19 14 NOTES ...
Страница 455: ...S3C2416X RISC MICROPROCESSOR HSMMC CONTROLLER 20 9 4 9 SD COMMAND ISSUE SEQUENCE Figure 20 9 Timeout Setting Sequence ...
Страница 604: ...S3C2416X RISC MICROPROCESSOR S3C2416X RISC MICROPROCESSOR 23 22 NOTES ...
Страница 638: ...PCM AUDIO INTERFACE S3C2416X RISC MICROPROCESSOR 25 18 NOTES ...
Страница 653: ...S3C2416X RISC MICROPROCESSOR ELECTRICAL DATA 26 15 Figure 26 14 SDRAM READ WRITE Timing Trp 2 Trcd 2 Tcl 2 DW 16 bit ...
Страница 670: ...ELECTRICAL DATA S3C2416X RISC MICROPROCESSOR 26 32 NOTES ...
Страница 672: ...MECHANICAL DATA S3C2416X RISC MICROPROCESSOR 30 2 Figure 27 2 330 FBGA 1414 Package Dimension 2 Bottom View ...