The HMP8170 NTSC and PAL encoder is a high-quality video encoder that supports YCbCr digital video data driving P0-P15 inputs, optionally lowpass filtered to 6MHz and driving the Y analog output. Cb and Cr are each lowpass filtered to 1.3MHz, quadrature modulated, and added together. The result drives the C analog output. The digital Y and C data are also added together and drive the two composite analog outputs. The DACs can drive doubly-terminated (37.5Ω) lines, and run at a 2x oversampling rate to simplify the analog output filter requirements.
The HMP8170 is a fully integrated NTSC/PAL video encoder that accepts YCbCr digital video data and generates analog Y/C (S‑Video) and composite outputs. It supports multiple video standards, flexible timing control, and optional VBI data insertion.
The document includes functional block diagrams, detailed timing tables, analog output filter recommendations, and information on the HMP8170EVAL1 evaluation board and its mother‑board HMP8156EVAL2. Package data and mechanical dimensions are also provided.
| Supported video standards | NTSC and PAL (B, D, G, H, I, M, N, NG) |
|---|---|
| Digital input formats | 8‑bit, 16‑bit 4:2:2 YCbCr; 8‑bit BT.656 |
| Package type | 64‑lead MQFP (14 × 14 mm) |
It supports NTSC and a full range of PAL standards (B, D, G, H, I, M, N, NG).
The encoder accepts 8‑bit and 16‑bit 4:2:2 YCbCr as well as 8‑bit BT.656 formats.
It is supplied in a 64‑lead metric quad flat‑pack (MQFP) measuring 14 × 14 mm.