FEATURES
• Supplies the functions of the TC (Transmission Convergence) sublayer recommended by the ATM Forum and
ITU-T.
• Supports the concatenation frame of 2.4 Gbps SONET STS-48c/SDH STM-16c.
• ATM layer interface
• 32-bit, 104-MHz LVTTL FIFO interface
• 15-cell transmit/receive FIFO
• Supports 52-byte/56-byte cell formats.
• Prefixes one-word TAG area to receive cell.
• Circuit side interface
• 16-bit PECL level I/O
• Either of two modes can be selected for CPU interface
• 16-bit data bus
• Intel-compatible mode [RD, WR, RDY-type]/Motorola-compatible mode [DS, R/W, ACK-type]
• Supports two types of overhead interfaces (that can access all overhead areas).
• Incorporates overhead byte insert/drop registers.
• Incorporates dedicated overhead byte insert/extract interfaces.