Features

■ 1394a-2000 OHCI link and PHY core function in sin gle device:

— Enables smaller, simpler, more efficient mother board and add-in card designs by replacing two components with one

— Enables lower system costs

— Leverages proven 1394a-2000 PHY core design

— Demonstrated compatibility with current Microsoft Windows* drivers and common applications

— Demonstrated interoperability with existing, as well as older, 1394 consumer electronics and periph erals products

— Feature-rich implementation for high performance in common applications

— Supports low-power system designs (CMOS implementation, power management features)

— Provides LPS, LKON, and CNA outputs to support legacy power management implementations

■ OHCI:

— Complies with 1394 OHCI specification revision 1.0

— Supports the following 1394 OHCI revision 1.1 features:

❑ Isochronous receive dual-buffer mode.

❑ Enhanced isochronous transmit skip/overflow support.

❑ ack_data_error improvememnts for asynchro nous and physical requests.

❑ Enhanced CSR control register implementation.

❑ Autonomous configuration ROM updates.

❑ Enhanced power management support, including ack_tardy event.

❑ Enhanced SelfID protocol, including selfIDComplete2 event.

— Compatible with Microsoft OHCI, DV, and SBP-2 driver stack in W98, W98SE, W2000, and MacOS† operating system

— 4 Kbyte isochronous transmit FIFO

— 2 Kbyte asynchronous transmit FIFO

— 4 Kbyte isochronous receive FIFO

— 2 Kbyte asychronous receive FIFO

— Dedicated asynchronous and isochronous descriptor-based DMA engines

— Eight isochronous transmit contexts

— Eight isochronous receive contexts

— Prefetches isochronous transmit data

— Supports posted write transactions

■ 1394a-2000 PHY core:

— Compliant with IEEE‡ 1394a-2000, Standard for a High Performance Serial Bus (Supplement)

— Provides two fully compliant cable ports each supporting 400 Mbits/s, 200 Mbits/s, and 100 Mbits/s traffic

— Supports extended BIAS_HANDSHAKE time for enhanced interoperability with camcorders

— While unpowered and connected to the bus, will not drive TPBIAS on a connected port even if receiving incoming bias voltage on that port

— Does not require external filter capacitor for PLL

— Supports PHY core-link interface initialization and reset

— Supports link-on as a part of the internal PHY core-link interface

— 25 MHz crystal oscillator and internal PLL provide transmit/receive data at 100 Mbits/s, 200 Mbits/s, and 400 Mbits/s, and internal link-layer controller clock at 50 MHz

— Interoperable across 1394 cable with 1394 physical layers (PHY core) using 5 V supplies

— Node power-class information signaling for system power management

— Supports ack-accelerated arbitration and fly-by concatenation

— Supports arbitrated short bus reset to improve utilization of the bus

— Fully supports suspend/resume

— Supports connection debounce

— Supports multispeed packet concatenation

— Supports PHY pinging and remote PHY access packets

— Reports cable power fail interrupt when voltage at CPS pin falls below 7.5 V

— Separate cable bias and driver termination voltage supply for each port

■ Link:

— Cycle master and isochronous resource manager capable

— Supports 1394a-2000 acceleration features