Samsung S3C2451X User Manual page 7

S3C2451X RISC MICROPROCESSOR
FEATURES (Continued)
Interrupt Controller
•
77 Interrupt sources
(One Watch dog timer, 5 timers, 12 UARTs, 24
external interrupts, 8 DMA, 2 RTC, 2 ADC, 1 IIC,
2 SPI, 2 SDI, 2 USB, 4 LCD, 1 Battery Fault, 1
NAND, 1 CF, 1 AC97 and 2 CAM I/F, 2 I2S, 2
PCM, 1 2D)
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Level/Edge mode on external interrupt source
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Programmable polarity of edge and level
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Supports Fast Interrupt request (FIQ) for very
urgent interrupt request
Timer with Pulse Width Modulation (PWM)
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4-ch 16-bit Timer with PWM / 1-ch 16-bit internal
timer with DMA-based or interrupt-based
operation
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Programmable duty cycle, frequency, and
polarity
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Dead-zone generation
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Supports external clock sources
RTC (Real Time Clock)
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Full clock feature: msec, second, minute, hour,
date, day, month, and year
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32.768 KHz operation
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Alarm interrupt
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Time tick interrupt
General Purpose Input/Output Ports
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24 external interrupt ports
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174 Multiplexed input/output ports
DMA Controller
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8-ch DMA controller
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Supports memory to memory, IO to memory,
memory to IO, and IO to IO transfers
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Burst transfer mode to enhance the transfer rate
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
LCD Controller
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Supports 1, 2, 4 or 8 bpp (bit-per-pixel) palette
color displays for color
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Supports 16, 24 bpp non-palette true-color
displays for color
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Supports maximum 16M color at 24 bpp mode
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Supports multiple screen size
– Typical actual screen size: 640x480, 320x240,
160x160, and others.
– Maximum frame buffer size is 4Mbytes.
– Maximum virtual screen size in 64K color
mode: 2048x2048, and others
•
Support 2 overlay windows for LCD
Camera Interface
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ITU-R BT 601/656 8-bit mode support
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DZI (Digital Zoom In) capability
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Programmable polarity of video sync signals
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Max. 4096x4096 pixels input support
(2048x2048 pixel input support for scaling)
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Image mirror and rotation (X-axis mirror, Y-axis
mirror, and 180° rotation)
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Camera output format (RGB 16/24-bit and
YCbCr 4:2:0/4:2:2 format)
UART
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4-channel UART with DMA-based or interrupt-
based operation
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Supports 5-bit, 6-bit, 7-bit, or 8-bit serial data
transmit/receive (Tx/Rx)
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Supports external clocks for the UART operation
(UEXTCLK)
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Programmable baud rate
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Supports IrDA 1.0
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Loopback mode for testing
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Each channel has internal 64-byte Tx FIFO and
64-byte Rx FIFO.
PRODUCT OVERVIEW
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