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參數(shù)資料

型號：	POE-VOICE-RD
廠商：	Silicon Laboratories Inc
文件頁數(shù)：	99/108頁
文件大?。?/td>	0K
描述：	KIT REF DESIGN PWR OVER ETHERNET
標準包裝：	1
主要目的：	參考設(shè)計，以太網(wǎng)供電（POE），語音傳輸
嵌入式：	是，MCU，8 位
已用 IC / 零件：	C8051F340，CP2201，Si3400
主要屬性：	嵌入式以太網(wǎng)，以太網(wǎng)供電，8 kHz 語音采樣系統(tǒng)
次要屬性：	圖形用戶界面
已供物品：	板，線纜，電源，軟件
產(chǎn)品目錄頁面：	626 (CN2011-ZH PDF)
相關(guān)產(chǎn)品：	336-1385-ND - IC POWER OVER ETHERNET 20QFN 336-1322-ND - IC POWER OVER ETHERNET 20QFN 336-1313-ND - IC ETH CTRLR SNGL-CHIP 28QFN 336-1298-ND - IC 8051 MCU FLASH 64K 48TQFP
其它名稱：	336-1326

CP2200/1

Rev. 1.0

15.7. Initializing the Physical Layer

The physical layer should be configured to the desired mode prior to setting the enable bit PHYEN (PHYCN.7). The

following procedure should be used to initialize the physical layer:

Step 1: If auto-negotiation is used, implement the synchronization procedure in Section 15.2 on page 88.

Step 2: Disable the physical layer by writing 0x00 to the PHYCN register.

Step 3: Configure Desired Options using the PHYCN and PHYCF registers:

1.Specify the Duplex Mode or enable Auto-Negotiation.

2.Enable or Disable Loopback Mode.

3.Disable the transmitter power save mode (TXPWR = 0x80).

4.Enable the desired functions such as Receiver Smart Squelch, Automatic Polarity Correction, Link

Integrity, Jabber Protection, and PAUSE packet capability advertisement.

5.If Automatic Polarity Correction is disabled, manually set the desired polarity.

Step 4: Enable the physical layer:

1.Enable the physical layer (PHYEN = 1).

2.Wait for the physical layer to power up. See Physical Layer Startup Time in Table 22 on page 93.

3.Enable the transmitter and receiver (TXEN = 1 and RXEN = 1).

Step 5: Wait for auto-negotiation to complete. If auto-negotiation is not enabled, software may wait for a valid

link or go directly to MAC Initialization.

Step 6: Enable the desired Activity, Link, or Activity/Link LEDs using the Register 15, “IOPWR: Port Input/

Step 7: Initialize the MAC to the same duplex mode reported by the physical layer in the PHYCN register.

Note: Step 6 and Step 7 are repeated in the reset initialization procedure. Software only needs to perform these steps once.

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