NET+50 (Obsolete)
- 32-Bit ARM7TDMI RISC
- On-Chip Cache
- Integral 10/100 Ethernet MAC
- 10-Channel DMA Controller
- Serial Ports
- Bus Interface
- Timers
- General Purpose I/O
- Clock Generator
- Package
- Other
- Details on ARM7 Core
32-Bit ARM7TDMI RISC Processor
- Full 32-bit ARM mode
- 15 general-purpose 32-bit registers
- 32-bit program counter and status register
- 5 supervisor modes, 1 user mode
- 44 MHz bus speed
On-Chip Cache
- 8 KB internal cache or 16 KB RAM
- 4-way set associative
- Lockable entries
- Write through
Integral 10/100 Ethernet MAC
- 10/100Mbit MII based PHY interface
- Supports TP-PMD and fiber-PMD devices
- Full- or half duplex
- Optional 4B/5B scrambling
- Full statistics gathering (SNMP and RMON)
- Station, broadcast, multicast address detection and filtering
- 128 byte transmit buffer
- 2K byte receive buffer
- Intelligent receive side buffer selection
- External CAM filtering
10-Channel DMA Controller
- 2 dedicated to Ethernet transmit/receive
- 4 dedicated to serial transmit/receive
- 2 dedicated to P1284 interface
- Flexible buffer management
- 2 channels configurable for external peripherals
Serial Ports
- 2 fully independent HDLC/UART/SPI serial ports
- 32 byte transmit/receive FIFOs
- Internal programmable bit-rate generators
- Bit rates from 75 bps – 230.4 kbps: 16X mode
- Bit rates from 1200 – 4Mbps: 1X mode
- Odd, even, or no parity
- 5, 6, 7 or 8 bits
- 1 or 2 stop bits
- Both internal and external clock support
- Receive side character and buffer gap timers
- 4 receive side data match detectors
Bus Interface
- 5 independent programmable chip selects
- Supports 8-, 16-, 32-bit peripherals
- Supports external address decoding and cycle termination
- Supports dynamic bus sizing
- Supports ASYNC and SYNC peripheral timing
- All chip selects support SRAM, EDO DRAM, SDRAM, Flash, EEPROM without external glue logic
- Internal DRAM address multiplexing
- Internal refresh controller (CAS before RAS)
- 256Mbyte addressing per chip select
- Burst-mode support
- 0-15 wait states per chip select
- Bootstrap support
- External bus master support
- ENI/GPIO interface using shared pins
- 4 IEEE 1284 parallel ports
- 64 kB shared RAM ENI interface (8 or 16-bit)
- Full duplex FIFO mode interface (8 or 16-bit)
- 32 byte transmit/receive FIFOs
Timers
- 2 independent 27-bit programmable timers
- Programmable watch-dog timer (interrupt or reset on expiration)
- Programmable bus timer
General Purpose I/O
- Up to 40 programmable I/O pins
- Up to 32 general purpose input pins
- 36 pins with programmable interrupt
Clock Generator
- Simple external crystal
- On-board Phase Locked Loop
- Supports direct external clock input
Package
- 208-pin BGA, 0.8mm pitch
- PQFP
Other
- Operating voltage:
- Core: 2.5V ± 10%
- I/O Ring: 3.3V ± 10%
- Operating temperature range: -40º C to +85º C
- Supported by NET+Works development software
Details on ARM7 Core
- 32/16-bit RISC architecture (ARM v4T)
- 32-bit ARM instruction set for maximum performance and flexibility
- 16-bit Thumb instruction set for increased code density
- Unified bus interface, 32-bit data bus carries both instructions and data
- Three-stage pipeline 32-bit ALU
- Very small die size and low power consumption
- Fully static operation
- Coprocessor interface
- Extensive debug facilities:
- EmbeddedICE-RT real-time debug unit
- JTAG interface unit
- Interface for direct connection to Embedded Trace Macrocell (ETM)
