Samsung S3C2501X User Manual page 28

32-bit risc microprocessor
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S3C2501X
1.2 FEATURES (Continue)
General DMA Channels
Six GDMA channels
Memory to memory data transfer
Memory to peripheral data transfer (high-speed
UART and DES)
Support for four external GDMA requests from
GDMA request pins
(xGDMA_Req0 - xGDMA_Req3).
Six Programmable Timers
• Interval or toggle mode operation
Hardware Watchdog Timer
Useful for periodic reset or interrupts
Programmable Interrupt Controller
28 programmable interrupt sources
22 internal sources and 6 external sources
programmable priority control
Programmable I/O port Controller
64 programmable I/O ports
Individually configurable to input, output, or I/O
mode for dedicated signals
6 external interrupt request
4 external GDMA request
4 external GDMA acknowledge
6 timer outputs
7 UART signals
2
I
C Controller
Master mode operation only
Baud rate generator for serial clock
Three PLLs for System, Core and PHY Clock
Each
PLL0 for ARM940T
The Input frequency is 10MHz.
Provide up to 166MHz output to ARM940T
PLL1 for system clock
The Input frequency is 10MHz.
Provide up to 133MHz output to system
PLL2 for PHY
The input frequency is 10MHz
Provide 20 MHz or 25MHz output to external
PHY chip
Operating Voltage Range
Internal Power: 1.8 V ± 5 %
I/O Power: 3.3 V ± 5 %
Operating temperature range
°
°
-40
C – 85
C
Package Type
• 272 BGA
PRODUCT OVERVIEW
1-3

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