M377: Difference between revisions

M377 (view source)

69 bytes removed , 21 June 2020

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 ==165-2089-xx Pinout==
-In the 11A32, 11A34, and 11A52, pairs of 165-2089-xx IC are placed on the board so that their output are facing each other,
+In the 11A32, 11A34, and 11A52, pairs of 165-2089-xx IC are placed on the board so that their outputs are facing one another,
-allowing their outputs to be wired in parallel.
+allowing their outputs to be wired in parallel with a minimum of board complexity and asymmetry.
-To minimize board complexity and keep the layout symmetrical, the purpose of the output channels varies:
+The purpose of the three output channels varies depending on the rotational orientation of the IC on the board.
-* Output 1 (pins 25 and 26) is either AUX SIG (aka AUX TRIGGER) or DISPLAY, depending on the rotational orientation of the IC on the board.
+* Output 1 (pins 25 and 26) is either AUX SIG (aka AUX TRIGGER) or DISPLAY,
 * Output 2 (pins 22 and 23) of all 165-2089-xx ICs are the TRIGGER signal.
-* Output 3 (pins 19 and 20) is either AUX SIG (aka AUX TRIGGER) or DISPLAY, depending on the rotational orientation of the IC on the board.
+* Output 3 (pins 19 and 20) is either AUX SIG (aka AUX TRIGGER) or DISPLAY.
 [[File:Tek 11a52 m377 flip.jpg|500px|caption]]
 Two 165-2089-xx M377 ICs facing one another in an 11A52.