------------------------------------------------------------------------------- Arbitrary LPC (low pin count) traffic ------------------------------------------------------------------------------- These captures are the identification and programming with random data of a LPC (low pin count) interface flash chip. The LPC bus is emulated with an ARM Cortex-M microcontroller, and does not run at the standard 33MHz clock. Although the clock contains significant jitter, the connected chips respond and communicate as expected. Details: http://en.wikipedia.org/wiki/Low_Pin_Count http://www.intel.com/design/chipsets/industry/25128901.pdf Hardware Setup -------------- A VultureProg daughterboard was attached to a TI Stellaris Launcphad board. A SST49LF080A flash chip was installed in the PLCC socket. The core clock of the CPU was reduced from 80MHz to 16MHz to permit the logic analyzer to capture all details of the waveform. Hardware: http://github.com/mrnuke/vultureprog-hardware Firmware + SW: http://git.qiprog.org/ The logic analyzer used was a MCU123 USBee AX Pro clone. It was connected to the "LPC probe" header of the VultureProg daughterboard. All captures were run at 24MHz sampling rate. Hookup ------ P0: LAD0 P1: LAD1 P2: LAD2 P3: LAD3 P4: LCLK P5: #LFRAME P6: NC P7: NC Data ---- - lpc_vultureprog.sr VultureProg BIOS chip programmer programming random data to a SST49LF080A. The bus clock was intentionally reduced to allow capture with an FX2-based logic analyzer. This data is released into the public domain.