Integrated Single Supply Broadband Modem Mixed Signal Front End (MxFE®)
Where the AD9975 and AD9875 differ is in the digital interface. The AD9975 has a digital interface that uses a single 10-bit data bus that is shared between the Tx and Rx paths. The AD9875 also includes a 10-bit data bus, but uses 5-bit interleaved nibbles for both the Tx and Rx paths, providing full duplex operation.
The AD9975 digital transmit and receive ports have individual TX/RX clocks and TX/RX enable lines. This interface connects directly to Homelug 1.0 PHY/MAC chips including the INT5130 from Intellon and CX11647 from Conexant. The AD9975 is available in a space-saving 48-lead LQFP package and is specified over the commercial (-40ºC to +85ºC) temperature range.