UPD7281中文资料瑞萨数据手册PDF规格书

IEEE1394 OHCI 1.1 COMPLIANT 3PORT PHY-LINK 1-CHIP HOST CONTROLLER

The µPD72874 is the LSI that integrated OHCI-Link and PHY function into a single chip. The µPD72874 complies with the 1394 OHCI Specification 1.1 and the IEEE Std 1394a-2000 specifications, and works up to 400 Mbps. It makes design so compact for PC and PC card application.

FEATURES

• Compliant with Link Layer Services as defined in 1394 Open Host Controller Interface specification release 1.1

• Compliant with Physical Layer Services as defined in IEEE Std 1394a-2000

• Provides three cable ports at 100/200/400 Mbps

• Super Low power consumption for Physical Layer

• Compliant with protocol enhancement as defined in IEEE Std1394a-2000

• Modular 32-bit host interface compliant to PCI Specification release 2.2

• Supports PCI-Bus Power Management Interface Specification release 1.1

• Modular 32-bit host interface compliant to Card Bus Specification

• Cycle Master and Isochronous Resource Manager capable

• Built-in FIFOs for isochronous transmit (2048 bytes), asynchronous transmit (2048 bytes), and receive (3072

bytes)

• Supports D0, D1, D2, D3hot

• Supports wake up function from D3cold

• 32-bit CRC generation and checking for receive/transmit packets

• 4 isochronous transmit DMAs and 4 isochronous receive DMAs supported

• 32-bit DMA channels for physical memory read/write

• Clock generation by 24.576 MHz X’tal

• 2-wire Serial EEPROMTM interface supported

• Separate power supply Link and PHY

• Programmable latency timer from serial EEPROM in Cardbus mode (CARD_ON = 1)