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MLN7400
16/32-bit RISC microcontroller
is a cost-effective, high-performance
microcontroller solution for embedded
internet.
The MLN7400 is built around an
outstanding CPU core: the 16/32-bit
ARM7TDMI RISC processor designed
by Advanced RISC Machines, Ltd.
The ARM7TDMI core is a low-power,
general purpose microprocessor
macro-cell that was developed
for use in application-specific
and custom-specific integrated
circuits. Its simple, elegant,
and fully static design is particularly
suitable for cost-sensitive and
power-sensitive applications.
The MLN7400 offers a 4-Kbytes
unified cache and Ethernet controller
which reduces
total system cost. |
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Operating
Voltage Range
- 3.3V +/- 10%
Operating Frequency & Powerf
- Up to 55MHz
- 400mW @ 50MHz
Package
- 144pin LQFP
- 128pin TQFP (Optional)
Architecture
- Integrated system for
embedded Ethernet Applications
- Fully 16/32-bit RISC architecture
- Little/Big-endian mode supported.
- Efficient and powerful ARM7TDMI
core
- Cost-effective JTAG-based debug
solution
System Manager
- 8/16-bit external bus
support for ROM/SRAM, flash memory,
SDRAM, and external I/O
- Programmable access cycle
- External wait
Unified
Instruction/Data Cache
- Two-way set-associative, unified
4-Kbytes cache
- Support for LRU protocol
Ethernet Controller
- DMA engine with burst
mode
- DMA Tx/Rx buffers(256 bytes
Tx, 256 bytes Rx)
- MAC Tx/Rx FIFO buffers(80 bytes
Tx, 16 bytes Rx)
- Data alignment logic
- Endian translation
- 100/10-Mbit per second operation
- Full compliance with IEEE standard
802.3
- MII and 7-wire 10-Mbps interface
- Station Management signaling
- On-chip CAM (up to 21 destination
addresses)
- Full-duplex mode with PAUSE
feature
- Long/short packet modes
- PAD generation
DMA
Controller
- 2-channel General DMA for memory-to-memory,
memory-to-UART, UART-to-memory
data transfers without
CPU intervention
- Increments or decrements a source
or destination addressin 8-bit,
16-bit or 32-bit
data
transfers
- 4-data burst mode
UARTs
- 4 console UARTs and
1 high-speed UART (serial I/O)
blocks with DMA-based or, interrupt-based
operation
- Support for 5-bit, 6-bit, or
8-bit serial data transmit and
receive
- Programmable baud rates
- 1 or 2 stop bits
- Odd or even parity
- Break generation and detection
- Parity overrun, and framing
error detection
- X16 clock mode
- Infra-red(IR) Tx/Rx support(IrDA)
- Flow control with high-speed
UART
- 32-byte Transmit FIFO and 32-byte
Receive FIFO for high-speed UART?
PCMCIA Socket Interface hardware
Timers
- 4 programmable 24-bit
timers
- Interval mode or toggle mode
operation
- Watchdog Timer
- 1 PWM output
Programmable I/O
- 43 programmable I/O ports
- Pins individually configurable
to input, output, or I/O mode
for dedicated signals
- All 5-V tolerant input pads
Interrupt Controller
- 25 interrupt sources, including
4 external interrupt sources
- Normal or fast interrupt mode
(IRQ, FIQ)
- Prioritized interrupt handling
I2C serial Interface
- Master mode operation only
- Baud rate generation for serial
clock generation
SPI(Serial
Peripheral Interface)
- Four signal interface(SPIMOSI,
SPIMISO, SPICLK, SPISEL)
- Full duplex operation, Synchronous
Transfer
- Work with data characters from
2 to 32 bits long
- Master SPI mode only support
- Programmable clock generator
- Programmable clock phase and
polarity(supports SPI Modes 0,
1, 2, 3)
- Programmable SPISEL Setup and
Hold time
- Write collision flag protection
- Do not support multi-master
environment
ADC
- One 12-bit resolution 4-channel
high speed ADC
- Key matrix input
- Analog value measuring input
- Maximum conversion rate of 500KSPS
with 2.5MHz clock
External
DAC I/F
- Support for Internet Voice/Audio
speaker application
- PCM buffer auto-control for
Audio/Voice data
- I2S for Audio DAC I/F
PLL
- The external clock can be multiplied
by on-chip PLL to provide high
frequency
system clock
- The output frequency is programmable
Software
- Embedded linux solution (royalty
free & open source)
- Supports a large number of devices,
file systems
- A strong networking support
including a full TCP/IP stack
- Full source codes with BIOS,
Kernel and Applications
- GNU toolchain for ARM, HOST
utility
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