Catalog
1Gbps Parallel-to-Serial MII Converter
Key Features
- Bidirectional Wire-Speed Ethernet Interface Conversion
- Can Interface Directly to SFP Modules and SGMII PHY and Switch ICs
- Serial Interface Configurable as 1000BASE-X or SGMII Revision 1.8 (4-, 6-, or 8-Pin)
- Parallel Interface Configurable as GMII, RGMII, TBI, RTBI, or 10/100 MII
- Serial Interface Has Clock and Data Recovery Block (CDR) and Does Not Require a Clock Input
- Translates Link Speed and Duplex Mode Negotiation Between MDIO and SGMII PCS
- Supports 10/100 MII or RGMII Operation with SGMII Running at the Same Rate
- Configurable for 10/100 MII DTE or DCE Modes (i.e., Connects to PHY or MAC)
- Can Also Be Configured as General-Purpose 1:10 SerDes with Optional Comma Alignment
- Supports Synchronous Ethernet by Providing a 25MHz or 125MHz Recovered Clock and Accepting a Transmit Clock
- Can Provide a 125MHz Clock for the MAC to Use as GTXCLK
- Accepts 10MHz, 12.8MHz, 25MHz or 125MHz Reference Clock
- Can Be Pin-Configured at Reset for Many Common Usage Scenarios
- GPIO Pins Can Be Configured as Clocks, Status Signals and Interrupt Outputs
- 1.2V Operation with 3.3V I/O
- Small, 8mm x 8mm, 68-Pin TQFN Package
Description
AI
The MAX24287 is a flexible, low-cost Ethernet interface conversion IC. The parallel interface can be configured for GMII, RGMII, TBI, RTBI, or 10/100 MII, while the serial interface can be configured for 1.25Gbps SGMII or 1000BASE-X operation. In SGMII mode, the device interfaces directly to Ethernet switch ICs, ASIC MACs, and 1000BASE-T electrical SFP modules. In 1000BASE-X mode, the device interfaces directly to 1Gbps 1000BASE-X SFP optical modules. The MAX24287 performs automatic translation of link speed and duplex auto-negotiation between parallel MII MDIO and the serial interface.
This device is ideal for interfacing single-channel GMII/MII devices such as microprocessors, FPGAs, network processors, Ethernet-over-SONET or -PDH mappers, and TDM-over-packet circuit emulation devices. The device also provides a convenient solution to interface such devices with electrical or optical Ethernet SFP modules.
### Applications/Uses
* Any System with a Need to Interface a Component with a Parallel MII Interface (GMII, RGMII, TBI RTBI, 10/100 MII) to a Component with an SGMII or 1000BASE-X Interface
* Switches and Routers
* Telecom Equipment
