USBN9604 National Semiconductor, USBN9604 Datasheet - Page 2

• Manufacturer Part Number: USBN9604
• Description: USBN9603/USBN9604 Universal Serial Bus Full Speed Node Controller with Enhanced DMA Support
• Manufacturer: National Semiconductor

www.national.com
Features
Full-speed USB node device
Integrated USB transceiver
Supports 24 MHz oscillator circuit with internal 48
MHz clock generation circuit
Programmable clock generator
Serial Interface Engine (SIE) consisting of Physical
Layer Interface (PHY) and Media Access Controller
(MAC), USB Specification 1.0 and 1.1 compliant
Control/Status register file
USB Function Controller with seven FIFO-based End-
points:
— One bidirectional Control Endpoint 0 (8 bytes)
— Three Transmit Endpoints (64 bytes each)
— Three Receive Endpoints (64 bytes each)
8-bit parallel interface with two selectable modes:
— Non-multiplexed
— Multiplexed (Intel compatible)
Enhanced DMA support
— Automatic DMA (ADMA) mode for fully CPU-inde-
— DMA controller, together with the ADMA logic, can
— Automatic Data PID toggling/checking and NAK
MICROWIRE/PLUS interface
pendent transfer of large bulk or ISO packets
transfer a large block of data in 64-byte packets via
the USB
packet recovery (maximum 256x64 bytes of data =
16K bytes)
2