器件名称: PM7325
功能描述: 2.4 Gbit/s ATM Layer Solution
文件大小: 46.9KB 共2页
简 介:PMC-Sierra,Inc.
Preliminary
PM7325 S/UNI-ATLAS-3200
2.4 Gbit/s ATM Layer Solution
FEATURES
Monolithic single chip device which handles ATM Layer functions for one direction including VPI/VCI address translation, cell appending, cell rate policing, cell counting and OAM requirements for 64 k VCs (virtual connections). Two or more PM7325 S/UNI-ATLAS-3200 devices can be cascaded to support additional VC's. Instantaneous transfer rate of 3200 Mbit/s supports a cell transfer rate of 5.68x106 cells/s. Can be configured as an Ingress mode device or an Egress mode device. POS-PHY/UTOPIA Level 3 PHY and Switch interface supports a 32-bit 104 MHz interface. Extended cell format is supported (52 - 64 byte cell). Packets are not processed and are buffered and passed through transparently. Handles up to 48 logical PHY ports. Supports a full duplex 16 bit 5 2MHz SCI-PHY Backwards Cell Interface Port which allows an Ingress mode device and an Egress mode device to communicate and behave as a single bi-directional device. Supports a 64-bit (with or without parity) 125 MHz External Pipelined ZBT SRAM interface. Includes a FIFO buffered 32-bit microprocessor bus interface for cell insertion and extraction, deterministic VC Table access, status monitoring and configuration of the device. Per-PHY output buffering scheme resolves the head-of-line blocking issue. Ingress and Egress functions include flexible search engines that cover the entire PHYID/VPI/VCI address range, dual leaky-b……
