Inte rfa cing, a nd 4) MISC signa ls 3 thro ugh 7.
T he J1850 VP W so ftwa re is so ftwa re co ntro lle d pe riphe ra l ba se d VP W ge ne ra tio n. T his m e a ns tha t the ISO /J P IC µC o ntro lle r use s a tim ing pe riphe ra l to ge ne ra te a nd re ce ive va ria ble pulse width (VP W ) wa ve fo rm s. T his a llo ws
the ne o VI de vice to cre a te fa ults a nd a na lyze VP W wa ve fo rm s tha t wo uld no t be po ssible with o the r pro to co l IC s. It a lso a llo ws suppo rt o f diffe re nt in-fra m e re spo nse s which ca use inco m pa tibilitie s be twe e n J1850 VP W pro to co l
IC s.
T he ISO /UAR T se ctio n is ve ry fle x ible . T he K a nd L line s ha ve so ftwa re co ntro lle d tra nsm it e na ble line s a llo wing m a ny diffe re nt va ria nts o f UAR T o r ISO 9141 co m m unica tio ns including: T x o n L R x o n K; T x a nd R x o n K; T x o n K
a nd L a nd R x o n K.
T he MISC signa ls co nta in fo ur 10 bit a na lo g inputs a nd o ne e x te rna l wa k e -up input.
Figure 6 - The ISO/J PIC µController Section
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