Maxim Integrated DS33Z41 - Manual (Page 9)

DS33Z41 Quad IMUX Ethernet Mapper
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2.6 SDRAM Interface
• Interface for 128Mb, 32-bit-wide SDRAM
• SDRAM Interface speed up to 100MHz
• Auto Refresh Timing
• Automatic Precharge
• Master clock provided to the SDRAM
• No external components required for SDRAM connectivity
2.7 MAC Interface
• MAC port with standard MII (less TX_ER) or RMII
• 10Mbps and 100Mbps Data rates
• Configurable DTE or DCE modes
• Facilitates auto-negotiation by host microprocessor
• Programmable half and full-duplex modes
• Flow control for both half-duplex (back-pressure) and full-duplex (PAUSE) modes
• Programmable Maximum MAC frame size up to 2016 bytes
• Minimum MAC frame size: 64 bytes
• Discards frames greater than Programmed Maximum MAC frame size and Runt, non-octet bounded,
or bad-FCS frames upon reception
• Programmable threshold for SDRAM queues to initiate flow control and status indication
• MAC Loopback support for Transmit data looped to Receive Data at the MII/RMII interface
2.8 Microprocessor Interface
• 8 bit data bus
• Non-multiplexed Intel and Motorola Timing Modes
• Internal software reset and External Hardware reset input pin
• Global interrupt output pin
2.9 Test and Diagnostics
• IEEE 1149.1 Support
• Programmable on-chip Bit Error Rate Tester (BERT)
• Patterns include Pseudorandom QRSS, Daly, and user-defined repetitive patterns
• Loopbacks (remote, local, analog, and per-channel loopback)