Engineering:Parallel Peripheral Interface
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The Parallel Peripheral Interface (PPI) is a peripheral found on the Blackfin embedded processor. The PPI is a half-duplex, bi-directional port that is designed to connect directly to LCDs, CMOS sensors, CCDs, video encoders (video DACs), video decoders (video ADCs) or any generic high speed, parallel device.[1]
The width of the PPI is programmable and can be set between 8 and 16 bits in 1-bit increments. The latest Blackfin family (BF54x) also features an 18/24-bit PPI for direct connection to RGB LCD panels.
The PPI can run from 0 MHz up to 66 MHz.
The PPI has a dedicated clock pin, three multiplexed frame sync pins, and between 16 and 24 data pins.[2]
References
- ↑ "PPI: Parallel Peripheral Interface [Analog Devices Wiki"]. https://wiki.analog.com/resources/eval/sdp/sdp-b/peripherals/ppi.
- ↑ Y, Roshni (2019-07-04). "What is 8255 Programmable Peripheral Interface (PPI)? Definition, Architecture, Pin Diagram and Modes of Operation of 8255" (in en-US). https://electronicsdesk.com/8255-ppi.html.
http://blackfin.uclinux.org/doku.php?id=ppi
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