av:sms2_av
Differences
This shows you the differences between two versions of the page.
Last revisionBoth sides next revision | |||
av:sms2_av [2007/07/09 15:58] – external edit 127.0.0.1 | av:sms2_av [2014/02/01 11:12] – Cleanup ApolloBoy | ||
---|---|---|---|
Line 1: | Line 1: | ||
===== Sega Master System A/V Info ===== | ===== Sega Master System A/V Info ===== | ||
- | The Sega Master System II, a redesigned (and partially stripped-down) version of the SMS, doesn' | + | The Sega Master System II, a redesigned (and partially stripped-down) version of the SMS, doesn' |
- | As for connecting the whole thing, there' | + | As for connecting the whole thing, there' |
=== Variant A: Sony CXA1145P === | === Variant A: Sony CXA1145P === | ||
- | Variant A is actually the same chip as in the SMS1. CXA1145, this is the internet. Internet, the Sony CXA1145P. | + | Variant A is actually the same chip as in the original SMS, model 1 Genesis/ |
{{ av: | {{ av: | ||
Line 25: | Line 25: | ||
| **notch** | | **notch** | ||
- | In my SMS2, this is located a bit to the left and back from the cartridge slot (assuming the controller ports as front). Vcc for this baby is 5V. As you can see, there' | + | The CXA1145 |
- | I frankly have no idea what XO In/Out and I Ref are - all the data sheets I could find were in Chinese. From what I can read out of the data sheet, the XO pins are connected to an internal oscillator, | + | The XO pins are connected to an internal oscillator, running at 3.58 MHz or 4.43 MHz, depending on the console' |
- | Pin 7, NTSC/PAL In, switches the encoder between NTSC and PAL modes - connect it to Vcc for NTSC or to Ground | + | Pin 7, NTSC/PAL In, switches the encoder between NTSC and PAL modes - connect it to Vcc for NTSC or to ground |
- | + | As the CXA1145 outputs weak luma and chroma, you will need to amplify the signals if you want to output | |
- | As the CXA1145 outputs weak luma and chroma you will need to amplify the signals if you want to output | + | |
=== Variant B: Fujitsu MB3514 === | === Variant B: Fujitsu MB3514 === | ||
+ | This is the other video encoder used in the SMS II, mainly used in later consoles which had Sonic the Hedgehog built-in. It is a small 24-pin surface-mount chip located behind the RF modulator. | ||
- | This is the other TV encoder chip I've seen in a friend' | + | There is no image or table for this one, because it's fundamentally the exact same chip as the CXA1145P. The only differences are its slightly lower voltage tolerance (7V instead of 10V) and two less connected pins - 11 and 13 are NC on this one. There is no composite sync output, but you can use composite video for sync instead. Vcc is 5V here as well. Pin 7 for PAL/NTSC switching works the same as in the CXA1145P - high signal NTSC, low signal PAL. Modding this chip for S-video is different than on the CXA1145; all that is needed for S-video on the MB3514 are a 220 uF capacitor and 75 ohm resistor for both the chroma and luma pins. |
- | + | ||
- | I'm not going to bother making an image or table for this one, because it's fundamentally the exact same chip as the CXA1145P. The only differences are its slightly lower voltage tolerance (7V instead of 10V) and two less connected pins - 11 and 13 are NC on this one. Bit of a shame about the separate Composite Sync, but you'll have to make do with what you get. Vcc is 5V here as well. Pin 7 for PAL/NTSC switching works the same as in the CXA1145P - High signal NTSC, low signal PAL. | + | |
av/sms2_av.txt · Last modified: 2019/08/27 20:45 by 127.0.0.1