User Control; Control Of Definition Converter Mcu I306 - NEC MultiSync LCD1550ME Service Manual

9.3 User Control

General Key Description
EXIT wCONTROL8
Exit : Turn off OSM menu, Exit sub menu.
Control : Move the green cursor and select control items.
Adjust : Change the value of each function / Enter to submenu / Proceed auto adjust / Proceed reset
Next : Move the NEXT tag
Reset : Reset the select item (Open reset warning before reset) / Mute the speaker / headphone
sound (short cut: when no OSM menu is shown)
9.3.1 Related ports of I306
Port Pin No.
MFB1 112
MFB5 107
MFB10 124
MFB4 109
MFB11 123
MFB3 110
MFB2 111
9.3.2 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 MCU.
Each parameter is stored in the EEPROM, the contents of which are updated as required.

9.4 Control of definition converter MCU I306

9.4.1 Ports related to control
Pin No. I/O
101
103 O
99 I/O
98 O
I/O Signal name
1 RESET/
Mute
1 EXIT
1 DOWN
1 UP
1 LEFT
1 RIGHT
1 NEXT
Signal name
I IRQ
HCLK
HDATA
HFS
−ADJUST+
NEXT RESET/MUTE
Function
RESET switch input
MUTE switch input
EXIT switch input
- switch input
+ switch input
3
switch input
4
switch input
NEXT switch input
Function
gmZan1 interrupt signal
gmZan1 serial clock
gmZan1 serial data
gmZan1 serial select
7-6
Remarks
The set value is returned
to the initial value
Withdraw from OSD
( - )key
( + )key
( 3 )key
(4 )key