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The Digi NS9750B-A1 is a single chip 0.13μm CMOS network-attached processor. The CPU is the
ARM926EJ-S core with MMU, DSP extensions, Jazelle Java accelerator, and 8 kB of instruction cache
and 4 kB of data cache in a Harvard architecture. The NS9750B-A1 runs up to 200 MHz, with a 100
MHz system and memory bus and 50 MHz peripheral bus. The NS9750B-A1 operates at a 1.5V core
and 3.3V I/O ring voltages.
With its extensive set of I/O
interfaces, Ethernet high-speed
performance and processing
capacity, the NS9750B-A1 is the
most capable of highly integrated
32-bit network-attached
processors available. The
NS9750B-A1 is designed specifically
for use in high-performance
intelligent networked devices and
Internet appliances including highperformance/low-latency remote
I/O, intelligent networked
information displays, and
streaming and surveillance cameras. The NS9750B-A1 is a member of the award-winning NET+ARM
family of system-on-chip (SOC) solutions for embedded systems.
The NS9750B-A1 offers a connection to an external bus expansion module as well as a glueless
connection to SDRAM, PC100 DIMM, Flash, EEPROM, and SRAM memories. It includes a versatile
embedded LCD controller that supports up to 16M color TFT or 3375 color STN. The NS9750B-A1
4K
SIM
100MHz
GPIO (50 Pins)
50, 40.5, or 31 MHz Peripheral Bus
Bridge32b-D, 32b-A
27-Channel DMA
USB
1284
I2C
LCD Controller
Power Manager
CLK Generation
Interrupt
Controller
AHB Arbiter
ARM926EJ-S
200, 162, or 125MHz
8kB I-Cache
4kB D-Cache
JTAG Test
and Debug
10/100
Ethernet
MII/RMII
MAC
Multiple
Bus Master
Architecture
Memory
Controller
Ext. Peripheral
Controller
PCI/CardBus Bridge
33 MHz
100, 81, or 62.5 MHz AMBA AHB Bus
32b-D, 32b-A
ARM ARM
16 General Purpose
Timers/Counters
Serial
Module x4
UART
SPI
features a PCI/CardBus port as well as a USB port for applications that require WLAN, external
storage, or external sensors, imagers, or scanners. Four multi-function serial ports, an I2C port, and
1284 parallel port provide a standard glueless interface to a variety of external peripherals. The
NS9750B-A1 also features up to 50 general purpose I/O (GPIO) pins and highly-configurable power
management with sleep mode.
NET+ARM processors are the foundation for the NET+Works® family of integrated hardware and
software solutions for device networking. These comprehensive platforms include drivers,
operating systems, networking software, development tools, APIs, and complete development
boards.
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Features
32-bit ARM926EJ-S RISC processor
- 125 to 200 MHz
„ 5-stage pipeline with interlocking
- Harvard architecture
- 8 kB instruction cache and 4 kB data cache
- 32-bit ARM and 16-bit Thumb instruction
sets. Can be mixed for performance/code
density tradeoffs
- MMU to support virtual memory-based OSs
such as Linux, WinCE/Pocket PC, VxWorks,
others
„ DSP instruction extensions, improved
divide, single cycle MAC
- ARM Jazelle, 1200CM (coffee marks) Java
accelerator
- EmbeddedICE-RT debug unit
- JTAG boundary scan, BSDL support
External system bus interface
- 32-bit data, 32-bit internal address bus,
28-bit external address bus
- Glueless interface to SDRAM, SRAM,
EEPROM, buffered DIMM, Flash
- 4 static and 4 dynamic memory chip
selects
- 1-32 wait states per chip select
A shared Static Extended Wait register
allows transfers to have up to 16368
wait states that can be externally
terminated.
- Self-refresh during system sleep mode
- Automatic dynamic bus sizing to 8 bits, 16
bits, 32 bits
- Burst mode support with automatic data
width adjustment
- Two external DMA channels for external
peripheral support
System Boot
- High-speed boot from 8-bit, 16-bit, or
32-bit ROM or Flash
- Hardware-supported low cost boot from
serial EEPROM through SPI port (patent
pending)
High performance 10/100 Ethernet MAC
- 10/100 Mbps MII/RMII PHY interfaces
- Full-duplex or half-duplex
- Station, broadcast, or multicast address
filtering
- 2 kB RX FIFO
- 256 byte TX FIFO with on-chip buffer
descriptor ring
– Eliminates underruns and decreases
bus traffic
- Separate TX and RX DMA channels
- Intelligent receive-side buffer size
selection
- Full statistics gathering support
- External CAM filtering support
PCI/CardBus port
- PCI v2.2, 32-bit bus, up to 33 MHz bus
speed
- Programmable to:
– PCI device mode
– PCI host mode:
Supports up to 3 external PCI
devices
Embedded PCI arbiter or external
arbiter
- CardBus host mode
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