November, 2015 HI-6120 Parallel Bus Interface and HI-6121 Serial Peripheral Interface (SPI) MIL-STD-1553 Remote Terminal ICs GENERAL DESCRIPTION The HI-6120 and HI-6121 provide a complete, integrated, 3.
3V MIL-STD-1553 Remote Terminal in a monolithic silicon gate CMOS device.
Two host interface options are offered: The HI-6120 uses a 16-bit parallel host bus interface for access to registers and RAM and is offered in a 100-pin plastic quad flat pack (PQFP).
The HI-6121 has a 4-wire SPI (Serial Peripheral Interface) host connection and comes in a reduced pin count 52-pin PQFP or 9mm x 9mm 64-pin QFN.
Both devices handle all aspects of the MIL-STD-1553 protocol, including message encoding, ...

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