| IC number | Manufacturer | Documentation |
|---|---|---|
| MC1377 | Motorola | Not available |
| IC number | Package | CBM part number | CBM part description |
|---|---|---|---|
| MC1377P | 20-pin DIP | 390085-01 | Video encoder - MC 1377 |
| Device | Position | Package |
|---|---|---|
| A1000 | U7A | DIP |
| A1300 | U21 | DIP |
| A2032 | U1 | DIP |
| A520 | IC1 | DIP |
| Pin | Name | Description |
|---|---|---|
| 1 | tr | External components at this pin set the rise time of the internal ramp function generator. |
| 2 | Sync | Composite sync input. Presents 10k Ohm resistance to input. |
| 3 | R | Red signal input. Presents 10k Ohm impedance to input. 1.0 Vpp required for 100% saturation. |
| 4 | G | Green signal input. Presents 10k Ohm impedance to input. 1.0 Vpp required for 100% saturation. |
| 5 | B | Blue signal Input. Presents 10k Ohm impedance to input. 1.0 Vpp required for 100% saturation. |
| 6 | -Yout | Luma (-Y) output. Allows external setting of luma delay time. |
| 7 | Vclamp | Video Clamp pin. Typical connection is a 0.01 µF capacitor to ground. |
| 8 | -Yin | Luma (-Y) input. Presents 10k Ohm input impedance. |
| 9 | CVout | Composite Video output. 50 Ohm output impedance. |
| 10 | Chromain | Chroma input. Presents 10k Ohm input impedance. |
| 11 | B-Yclamp | B-Y clamp. Clamps B-Y during blanking with a 0.1 µF capacitor to ground. Also used with R-Y clamp to null residual color subcarrier in output. |
| 12 | R-Yclamp | R-Y clamp. Clamps R-Y during blanking with a 0.1 µF capacitor to ground. Also used with B-Y clamp to null residual color subcarrier in output. |
| 13 | Chromaout | Chroma output. 50 Ohm output impedance. |
| 14 | VCC | Power supply pin for the IC; +12, ± 2.0 V, required at 35 mA (typical). |
| 15 | Gnd | Ground pin. |
| 16 | VB | 8.2 V reference from an internal regulator capable of delivering 10 mA to external circuitry. |
| 17 | Oscin | Oscillator input. A transistor base presents 5.0k Ohm to an external subcarrier input, or is available for constructing a Colpitts oscillator. |
| 18 | Oscout | Oscillator output. The emitter of the transistor, with base access at Pin 17, is accessible for completing the Colpitts oscillator. |
| 19 | øm | Quad decoupler. With external circuitry, R-Y to B-Y relative angle errors can be corrected. Typically, requires a 0.01 µF capacitor to ground. |
| 20 | NTSC/PAL Select | NTSC/PAL switch. When grounded, the MC1377 is in the NTSC mode; if unconnected, in the PAL mode. |
Copyright © 2003-2006 Ronald van Dijk - All rights reserved
Last update: 29 March 2006