參數(shù)資料
型號: CP2200-GQ
廠商: Silicon Laboratories Inc
文件頁數(shù): 20/108頁
文件大?。?/td> 0K
描述: IC ETH CTRLR SNGL-CHIP 48TQFP
標(biāo)準(zhǔn)包裝: 250
控制器類型: 以太網(wǎng)控制器,MAC/10Base-T
接口: 并行/串行
電源電壓: 3.1 V ~ 3.6 V
電流 - 電源: 75mA
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 48-TQFP
供應(yīng)商設(shè)備封裝: 48-TQFP(7x7)
包裝: 托盤
產(chǎn)品目錄頁面: 627 (CN2011-ZH PDF)
配用: 336-1316-ND - KIT EVAL FOR CP2201 ETH CTRLR
其它名稱: 336-1312
CP2200/1
Rev. 1.0
19
6.4. Clocking Options
The CP2200/1 can be clocked from an external parallel-mode crystal oscillator or CMOS clock. Figure 10 and
Figure 11 show typical connections for both clock source types. If a crystal oscillator is chosen to clock the device,
the crystal is started once the device is released from reset and remains on until the device reenters the reset state
or loses power.
Figure 10. Crystal Oscillator Example
Important note on external crystals: Crystal oscillator circuits are quite sensitive to PCB layout. The crystal
should be placed as close as possible to the XTAL pins on the device. The traces should be as short as possible
and shielded with a ground plane from any other traces that could introduce noise or interference.
Figure 11. External CMOS Clock Example
Table 7 lists the clocking requirements of the CP2200/1 when using a crystal oscillator or CMOS clock. Table 8
shows the electrical characteristics of the XTAL1 pin. These characteristics are useful when selecting an external
CMOS clock.
XTAL1
XTAL2
10 M
Ω
20 MHz
XTAL1
XTAL2
No Connect
20 MHz
CMOS
Clock
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