DESCRIPTION
The PDI1394L41, Philips Semiconductors Full Duplex 1394 Audio/Video (AV) Link Layer Controller, is an IEEE 1394–1995 compliant link layer controller featuring 2 embedded AV layer interfaces. The AV layers are designed to encrypt and pack, or unpack and decrypt application data packets for transmission over the IEEE1394 bus using isochronous data transfers and the “5C” content protection method.

FEATURES
• IEEE1394.a and IEEE1394–1995 Standard Link Layer Controller
• Hardware Support for the IEC61883 International Standard of Digital Interface for Consumer Electronics
• Interface to any IEEE 1394–1995 or 1394.a Physical Layer Interface
• 5V Tolerant I/Os
• Single 3.3V supply voltage
• Full-duplex isochronous operation
• Operates with 400/200/100 Mbps physical layer devices
• 12K byte fully programmable FIFO pool for isochronous and asynchronous data
• Supports single capacitor isolation mode and IEEE 1394–1995, Annex J. isolation
• 6-field deep SYT buffer added to enhance real-time isochronous synchronization using the AVFSYNC pin
• Generates its own AV port clocks under software control. Select one of three frequencies: 24.576, 12.288, or 6.144 MHz
• Hardware support for the “5C” content protection method
• On chip timer resources
• Flexible 8/16 bit multiplexed/non-multiplexed host interface
• Parallel AV interface
• Fast 56-bit M6 cipher/decipher blocks capable of operating at over 80 Mbps
• Hardware authentication acceleration to reduce software processor loading
• Highly configurable 12 K byte FIFO