GenBoard/Manual/KnockSensor (2005-08-10 19:12:58)

We need to add detailed description of sensors and configuration parameters here. Most can be had from GenBoard/InitialConfig page.


GenBoard/VerThree knockdetection HW

Needed for Knock Sensor input:

R1, R2 Knock Channel 1 (10..22k) (analog signal amplitude gain can be adjusted with these; but also in the digital domain - in config)
R3, R4 Knock Channel 2 (same as R1,R2)
R17 1M
C1 Knock Channel 1 (100nF)
C2 Knock Channel 2 (same as C1)
C14 0.22uF
C16 100nF
C18, C19 22pF
Y2 4MHz XTAL (16MHz might work with matching config)
U5 TPIC8101DW (not in rescue kit! Optional, see WebShop)

C17 is no longer used. (was: 2.2nF, can now be left off)

V3.2: if you ordered knock-kit (in same order as genboard) than U5=TPIC8101DW and Y2=crystal already soldered onboard (crystal missing on a few boards sent out before 20041030.)


The knock sensor chip installation:

Pin 1 points to the connectors-side. (so pin 1 points to the short side of the board)

The crystal goes next to the chip.


For manual:

Can someone provide pictures of board region around knock chip before installation, and then chip placement and wiring installed on v3.x board?

Those running knock sensing: routing wires through EC connector or through endplates?


See also