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參數(shù)資料
| 型號： | CM2031-A0TR |
| 廠商： | ON Semiconductor |
| 文件頁數(shù)： | 3/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC HDMI RX PORT P/I 38-TSSOP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | * |
| 類型： | * |
| 應(yīng)用： | * |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 38-TFSOP （0.173"，4.40mm 寬）裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 38-TSSOP |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | CM2031-A0TROSDKR |
CM2031
http://onsemi.com
11
Figure 10. Typical Application for CM2031
Layout Notes
1. Differential TMDS Pairs should be designed as normal
100 W HDMI Microstrip. Single Ended (decoupled) TMDS
traces underneath MediaGuard
t, and traces between MediaGuardt and Connector should be tuned to match
chip/connector IBIS parasitics. (See MediaGuard
t Layout Application Notes.)
2. Level Shifter signals should be biased with a weak pullup to the desired local LV_SUPPLY. If the local ASIC
includes sufficient pullups to register a logic high, then external pullups may not be needed.
3. Place MediaGuard
t as close to the connector as possible, and as with any controlled impedance line always avoid
placing any silkscreen printing over TMDS traces.
4. CM2021/CM2031 footprint compatibility For the CM2031, Pin 37 becomes the VCEC power supply pin for the
slewrate limiting circuitry. This can be supplied by a
0 W jumper to VCEC which should be depopulated to utilize the
CM2021. The 100 nF CBYP is recommended for all applications.
5. CEC pullup isolation The 27 k RCEC and a Schottky DCEC provide the necessary isolation for the CEC pullup.
NOTE: This circuitry is used only in the CM2021. Depopulate the components for CM2031 applications in a CM2021/
CM2031 dual footprint layout.
6. Footprint compatibility The CM2031 has (builtin) internal backdrive protection. The CM2021 does not not have
internal backdrive protection and requires the external RCEC and DCEC components.
7. (For CM2031) If CEC firmware is not implemented, do not populate with 0
W resistor. If CEC firmware is
implemented, then populate with 0
W resistor.
(For CM2021) Populate with 0
W resistor in either case.
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