中文CEC_简介

用戶控制標準 (CEC) HDMI (High-Definition Multimedia Interface) TMDS Transition Minimized Differential Signaling WHY CEC (Consumer Electronics Control) ? 只要按１個鍵就可控制與電視連接的設備. CEC 3.1 End-User Features One Touch Play - Allows a device to be played and become the active source with a single button press. System Standby - Enables the user to switch all devices to standby with one button press. One Touch Record - Offers a What You See Is What You Record (WYSIWYR) facility, meaning that whatever is shown on the TV screen is recorded on a selected recording device. Deck Control - Enables a device to control (e.g. play, fast forward etc.) and interrogate a playback device (a deck). Tuner Control - Allows a device to control the tuner of another device. Device Menu Control - Enables a device to control the menu of another device by passing through user interface commands. Remote Control Pass Through - Enables remote control commands to be passed through to other devices within the system. CEC 3.2 Supporting Features Device OSD Name Transfer - Enables devices to upload their preferred OSD name to the TV. The TV can then use this name in any menus associated with that device. Device Power Status – Allows the current power status of a device to be discovered. OSD Display - Enables a device to use the on-screen display of the TV to display text strings. Routing Control - Allows the control of CEC Switches for streaming of a new source device. System Information - Queries the system to determine device addresses and language. Vendor Specific Commands - Allows a set of vendor-defined commands to be used between devices of HDMI 與用戶控制標準(CEC) • HDMI 接口中的第13腳 (Pin). • 速率約 400 bit / second • 讓用戶控制與電視 (TV) 連接的設備(錄.放 影機﹐ＣＤ撥放機﹐音響等等有HDMI接頭 的設備). • 美國標準［QuantumData 副總裁是標準委 員會成員］ CEC 的物理層 • 約400 HZ總線 (Bus), 約2.4 ms/bit,通過ＨＤＭＩ接口傳輸. • CEC腳是用Ｃ型線 (TMDS是Ａ型線). • CEC Leakage current in power-off state: 1.8 μA • CEC 標準規定總的電容７２００ＰＦ. 可帶ＣＥＣ設備 = 7200 /(700+100) = 9. CEC 的物理層(信號) • 總線保持高電平是閑態 (IDLE). • 要發送看總線是閑態嗎?是,拉低總線電平.發送.不然﹐延 遲發送. • 開始發送位起始 3.7 ms 低電平, 而后0.8 ms 高電平. • 之後,每信息位發送2.4 ms (2.05-2.75 ms). • “０”-起始 1.5 ms 低電平,而后0.9 ms高電平 • “ 1”-起始 0.6 ms低電平,而后1.8 ms高電平 • 2.5 - 3.6 V -高電平, 0 - 0.6 V -低電平 • Rise Time < 250 μs , Fall Time < 50 μs CEC 物理層: • 開始發送位 • “0”和“1” CEC 的物理層(測試) • 動態測試 -QuantumData 讓你用示波器觀測波形 • 靜態測試 -QuantumData 讓你量測達標電壓準度 CEC Compliance Test Set CEC 的聯接層(消息) • 每條信息都是有 Ｓ［開始發送位］＋ ｛信息位 ［８ 位］ ＋ 結束位 ［ＥＯＭ］＋回應位 ［ＡＣＫ／Ｎ ＡＫ］｝★Ｎ • 消息結束位 0 結束消息. • 回應位 (0 –ACK, 1-NAK), 廣播方式除外, 廣播方式: 地址 f 0-NAK. CEC 的聯接層(聯接結構與地址) • ＣＥＣ標准規定地址 Logical Address 電視 ［０］ 放影機 ［１﹐２﹐９］ ＳＴＢ ［３﹐６﹐７］﹐ ＤＶＤ ［４﹐８］ 音響 [５] 保留 [１０－１３] 任意 [１４] 非注冊 [１５] CEC 的聯接層(消息) • 消息發送競爭方法 1) 匯流排競爭 -誰獲發送權? 2) 匯流排忙 靜止 ３－５位再發. 3) 回發或新發靜止 ５－７位再發送. 4) 同一設備再發送至少等７位. 5) 幾個設備同時發送﹐低地址獲發送權. CEC消息 • CEC消息 N <=16 . • CEC消息包括: -要求 (例如倒帶) -訊息 -生產商ＩＤ. HDMI CEC 測試儀 • HDMI CEC 偵錯工具. • HDMI CEC Compliance Test (part of the TME) 達標測試儀 • Auxiliary Channel Analyzer (ACA)CEC 分 析觀察儀 • CEC Test Images (Production Testing) • Front Panel CEC Ping Tool CEC 工具 • CEC 偵錯工具 • Allows our customers debug CEC circuits and drivers. • CEC Compliance Test Set • Allows the CEC compliance test to be executed. – Quiescent Electrical Adapter TPA-CEC-R – Allows pull-up and leakage, and line degradation to be measured with a voltmeter. – Dynamic Electrical Adapter TPA-CEC-RR – Allows slew rate, logic levels, rise/fall times, and timing to be measured with an oscilloscope. – CEC Device Bridge TPA-CEC-4R – Allows three of our CEC cores to be used on a single bus. CEC 查錯工具 • 功能 – 命令 – Up to 3x CEC devices at once, each with independent bus timing monitor – Send CEC Messages – Query for CEC responses – Log-to-File – Front panel “Ping” Tool – Trigger signal for oscilloscope-based electrical measurements – Send corrupted packets – Force DUT bits low – Variable bit timing CEC 命令 • CEC3: LA? • CEC3: CECU • CEC3:LA 5 • CEC3:BUSM: ON (OFF) • CECM:BITC – bit clear • CEC3:BUSM:TIME? 0 9 • CEC3:CECDEV01 • CEC3:CECU CEC 命令 CEC3: VID CEC3: PA - 地址 CEC3: BUSM:MSGX ? CEC3: MSGX 0 (SA) 1 (DA) 41 (opcode) 24 (para) CEC Controller CEC Tools Compliance Tester (相容性測試器組) CEC相容性測試器組 TPA-CEC-R TPA-CEC-RR TPA-CEC-4R TME達標測試儀 Test Management Environment (TME達標測試儀) Test Management Environment (TME) (測試結果) CEC 匯流排 分析 定性数据统计分析pdf销售业绩分析模板建筑结构震害分析销售进度分析表京东商城竞争战略分析 器 • 支援 EDID. • 支援 HDCP. • 支援 CEC 匯流排. 總線觀察儀 QuantumData 終身保証 • 新標準升級. • 加速研發. • 生產商規格相容性測試. 陸傑科技 熱忱專業服務保證 用戶控制標準 (CEC) Slide Number 2 Slide Number 3 Slide Number 4 Slide Number 5 HDMI 與 用戶控制標準(CEC) CEC 的物理層 CEC 的物理層(信號) CEC 物理層: CEC 的物理層(測試) CEC Compliance Test Set CEC 的聯接層(消息) CEC 的聯接層(聯接結構與地址) CEC 的聯接層(消息) CEC消息 HDMI CEC 測試儀 CEC 工具 CEC 查錯工具 CEC 命令 CEC 命令 Slide Number 21 Slide Number 22 CEC相容性測試器組 TPA-CEC-R TPA-CEC-RR TPA-CEC-4R TME達標測試儀　 Test Management Environment (TME達標測試儀) Test Management Environment (TME) (測試結果) CEC 匯流排分析器 總線觀察儀 QuantumData 終身保証