s3c2410a Samsung Semiconductor, Inc., s3c2410a Datasheet - Page 369

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s3c2410a

Manufacturer Part Number
s3c2410a
Description
16/32-bit Risc Arm Microprocessor
Manufacturer
Samsung Semiconductor, Inc.
Datasheet

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S3C2410A
BLOCK DIAGRAM
The S3C2410A LCD controller is used to transfer the video data and to generate the necessary control signals, such
as VFRAME, VLINE, VCLK, VM, and so on. In addition to the control signals, the S3C2410A has the data ports for
video data, which are VD[23:0] as shown in Figure 15-1. The LCD controller consists of a REGBANK, LCDCDMA,
VIDPRCS, TIMEGEN, and LPC3600 (See the Figure 15-1 LCD Controller Block Diagram). The REGBANK has 17
programmable register sets and 256x16 palette memory which are used to configure the LCD controller. The
LCDCDMA is a dedicated DMA, which can transfer the video data in frame memory to LCD driver automatically. By
using this special DMA, the video data can be displayed on the screen without CPU intervention. The VIDPRCS
receives the video data from the LCDCDMA and sends the video data through the VD[23:0] data ports to the LCD
driver after changing them into a suitable data format, for example 4/8-bit single scan or 4-bit dual scan display
mode. The TIMEGEN consists of programmable logic to support the variable requirements of interface timing and
rates commonly found in different LCD drivers. The TIMEGEN block generates VFRAME, VLINE, VCLK, VM, and so
on.
The description of data flow is as follows:
FIFO memory is present in the LCDCDMA. When FIFO is empty or partially empty, the LCDCDMA requests data
fetching from the frame memory based on the burst memory transfer mode (consecutive memory fetching of 4 words
(16 bytes) per one burst request without allowing the bus mastership to another bus master during the bus transfer).
When the transfer request is accepted by bus arbitrator in the memory controller, there will be four successive word
data transfers from system memory to internal FIFO. The total size of FIFO is 28 words, which consists of 12 words
FIFOL and 16 words FIFOH, respectively. The S3C2410A has two FIFOs to support the dual scan display mode. In
case of single scan mode, one of the FIFOs (FIFOH) can only be used.
System Bus
REGBANK
LCDCDMA
Figure 15-1. LCD Controller Block Diagram
LPC3600 is a timing control logic unit for LTS350Q1-PD1 or LTS350Q1-PD2.
TIMEGEN
VIDPRCS
LPC3600
VIDEO
MUX
VCLK /LCD_HCLK
VLINE / HSYNC / CPV
VFRAME / VSYNC / STV
VM / VDEN / TP
LCDVF0
LCDVF1
LCDVF2
VD[23:0]
. .
.
LCD CONTROLLER
15-3

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