MXB012355
Diagrams
PINOUT | ![]() |
---|
PartsList
CAPACITORS | RESISTORS | FILTERS | |||
---|---|---|---|---|---|
C1 | 230 nF | R1 | 75 ohm | FIL1 | 80 ohm |
C2 | 230 nF | R2 | 75 ohm | FIL2 | 80 ohm |
C3 | 1 uF | R3 | 75 ohm | FIL3 | 80 ohm |
C4 | 230 nF | R4 | 115 ohm | ||
C5 | 220 uF | R5 | 14K ohm | ||
C6 | 220 uF | R6 | 23K ohm | ||
C7 | 220 uF |
12v Circuit and D-Terminal Connector
12v power circuit is only utilized and required for Japanese D-terminal connection... TV's which utilize a D-terminal connection require a data line voltage which will switch the displays video mode between interlaced / progressive.
The MX chip uses 12v power and associated board circuitry to reduce delivered data line voltage to 0v or 5v to the "black" pad.
The "black" pad is the D-terminal connection for the data line.
0 V = 59.94i / 60i
5 V = 59.94p / 60p
PIN 20 performs internal switching to control delivery of data line voltage:
1. GC powered off...PIN 20 = ~9K ohm
2. bootup and "progressive mode YES NO" message displayed (interlaced)...PIN20 = ~80K ohm = 0v
3. once "YES" is selected, the chip will output progressive scan video and provide signal to D-Terminal...PIN20 = open = 5v
VGA Mod
The MX chip is capable of switching between Component and VGA video output.
When Pin 12 is connected to GND (unmodified) the MX chip is in Component mode (YPBPR video output). To convert the MX chip for VGA output, simply lift Pin 12 from the GND pad and connect a 10K resistor between Pin 12 and 3.3v. PIN 21 and 22 are used for VGA vertical and horizontal sync.
*VGA PINOUT * 1 R * 2 G * 3 B * 4 - * 5 - * 6 GND * 7 GND * 8 GND * 9 - * 10 GND * 11 GND * 12 - * 13 H-Sync * 14 V-Sync * 15 -
Selecting Progressive Mode
Progressive video can only be displayed on supported software titles*. To manually call the progressive mode selection prompt, hold the "B" button at boot up and the prompt will appear.
- Swiss also allows forcing of progressive video mode.