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EPC635 データシート(PDF) 41 Page - Espros Photonics corp |
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EPC635 データシート(HTML) 41 Page - Espros Photonics corp |
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41 / 97 page  5.9.4. TCMI embedded synchronization mode Embedded Synchronization Mode ESM uses only DCLK and DATA[*] bus to transmit the whole image. It eliminates using hardware VSYNC, HSYNC, XSYNC signals for synchronization. By setting I2C_TCMI_control.tcmi_esm_en = 1 (see chapter 8.7.20), ESM embeds special data packets – so called “Labels”, before and after every frame and row to mark the begin and the end of the actual pixel samples on the TCMI data bus. The synchronization labels consist of 4 consecutive bytes, starting always with 0xFF, followed by 0x00, 0x00, ending with a unique byte as defined designator as given in Table 20. Label ending bytes can be customized by TCMI_ESM_FS, TCMI_ESM_FE, TCMI_ESM_LS and TCMI_ESM_LE registers (see 8.6.3). Label 4-Byte Data Packet Description FS 0xFF 00 00 1E Frame Start FE 0xFF 00 00 E1 Frame End LS 0xFF 00 00 AA Line Start LE 0xFF 00 00 55 Line End Table 20: TCMI ESM labels The receiver/application continuously parses the incoming data for ESM labels and strips out the image data marked between LS-LE pairs. Figure 39 Illustrates an example of a DCS frame transfer. Power up 1st line of start frame Last line of start frame 1st line of follower frame Last line of follower frame Line 1 FE FS LS LE Blanking DCS0 Blanking LE LS Line n LS LE FE Blanking (0x01) … Blanking ... 0x01 (default, RESET, READY) Line 1 FS LS LE Blanking DCS1 Blanking LE LS Line n LS LE FE Blanking ... SHUTTER = active Start of transmission FS LS ... Figure 39: TCMI ESM frames © 2017 ESPROS Photonics Corporation Characteristics subject to change without notice 41 / 97 Datasheet_epc635-V1.02 www.espros.com |
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