User Control - HP f1723 Service Manual

Table 2 the number of the lines, Vsync distinction
Indication resolution
640 x 480
800 x 600
832 x 624
1024 x 768
1152 x 864
1280 x 960
1280 x 1024
7.3

User Control

7.3.1 Related ports and pin of I304
Port Pin No.
GPIO3 I304, 26
GPIO7 I304, 32
GPIO6 I304, 29
GPIO21 I304, 16
7.3.2 Functions
Control is effected for the push-switches to be used when the user changes the parameters, in order to modify the
respective setting values. Whether the switch has been pressed is identified with the switch input level that is
turned "L".
Each switch input port is pulled up at outside of ASIC
Each parameter is stored in the EEPROM, the contents of which are updated as required.
.
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The number of the
distinction lines
487 < LINE < 607
607 < LINE < 777
640 < LINE
768 < LINE < 870
870 < LINE < 1031
960 < LINE < 1027
1027 < LINE
I/O Signal name
I MENU EXIT/ENTER switch input
I MINUS
I PLUS
I POWER soft power switch input
f1723 / FP7317 / L1702 / vf17 / FP17
Distinction Vsync
fV < 63 Hz
63 Hz < fV < 68 Hz
68 Hz < fV < 74 Hz
74 Hz < fV < 78 Hz
fV < 58 Hz
58 Hz < fV < 63 Hz
63 Hz < fV < 73 Hz
73 Hz < fV < 78 Hz
-
fV < 63 Hz
68 Hz < fV < 73 Hz
73 Hz < fV < 78 Hz
Function
switch input Auto-Adj.
switch input
Remarks