参数资料
| 型号： | CM2030-A0TR |
| 厂商： | ON Semiconductor |
| 文件页数： | 8/11页 |
| 文件大小： | 0K |
| 描述： | IC HDMI TX PORT P/I 38-TSSOP |
| 标准包装： | 1 |
| 系列： | * |
| 类型： | * |
| 应用： | * |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 38-TFSOP （0.173"，4.40mm 宽）裸露焊盘 |
| 供应商设备封装： | 38-TSSOP |
| 包装： | 标准包装 |
| 其它名称： | CM2030-A0TROSDKR |
CM2030
http://onsemi.com
6
than 2 kW, and up to 7.3 nF total capacitance.) The CM2030
targets an output drive slewrate of less than 100 mV/ms
regardless of static load for the CEC line. Additionally, the
same internal circuitry will perform active termination, thus
reducing ringing and overshoot in entertainment systems
connected to legacy or poorly designed CEC nodes.
The CM2030’s bidirectional slew rate limiting is
integrated into the CEC levelshifter functionality thus
allowing the designer to directly interface a simple low
voltage CMOS GPIO directly to the CEC bus and
simultaneously guarantee meeting all CEC output logic
levels and HDMI slewrate and isolation specifications (See
Figure 5).
Figure 5. Integrated CM2030 Solution
CEC
CM2030
CEC I/F
mP
The CM2030 also includes an internal backdrive
protected static pullup 120
mA current source from the
CE_SUPPLY rail in addition to the dynamic slew rate
control circuitry.
Figure 6 shows a typical shaped CM2030 CEC output
(bottom) against a ringing uncontrolled discrete solution
(top).
Figure 6. CM2030 CEC Output
HDMI certification requires capacitance measurement of
the CEC line to be less than 150 pF per device. Due to the
active circuit inside the CM2030 CEC line, CM2030 may
cause false readings during the CEC capacitance
measurement and not pass the test. The active circuit of the
CM2030 CEC line would react with the LCR meter and
cause false capacitance readings. There is no issue with the
operation of the CM2030 CEC line during normal
operations. In fact, CM2030 CEC has shown to improve the
signal integrity of the CEC line. CM2030 can be used for
applications which do not require HDMI certification or
applications which do not use the CEC line.
HOTPLUG DETECT LOGIC
The CM2030 ensures that the local ASIC will properly
detect an HDMI compliant Sink. The current sink maintains
a local logic “low” when no system is connected.
A valid pullup on the HDMI connector pin will overdrive
the internal pulldown and deliver a logic “high” to the local
ASIC.
HP_OUT
5V_SUPPLY
IS
HP_IN
LV SUPPLY
3IS
CM2030
19
HDMI CONN
Figure 7. Hotplug Detect Circuit
A 15 K
W pull down resistor should be connected between
HP_OUT and ground as required by HDMI specification.
There should be no pull up on the HP_IN, ASIC side of
CM2030.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CM2031 | 制造商:CALMIRCO 制造商全称:California Micro Devices Corp 功能描述:HDMI Receiver Port Protection and Interface Device |
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| CM2037 | 制造商:CML 制造商全称:Chicago Miniature Lamp,inc 功能描述:T-1 3/4 Wire Terminal (standard) |
| CM2039 | 制造商:CML 制造商全称:Chicago Miniature Lamp,inc 功能描述:T-1 3/4 Wire Terminal (standard) |
| CM20-4 | 功能描述:灯 2.5V .35A Lens End RoHS:否 制造商:Chicago Miniature 灯类型:Incandescent 灯座类型:Wire Terminal 灯大小:T-1 3/4 颜色: 电压:14 V 工作电流: MSCP:0.3 MSCP 寿命:40000 hr 封装:Bulk |
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