Maxim DS33Z41 Spezifikationen PDF herunterladen (Seite 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)

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Maxim DS33Z41 Spezifikationen Seite 9