參數(shù)資料
型號: MC92604ZT
廠商: Freescale Semiconductor
文件頁數(shù): 89/122頁
文件大?。?/td> 0K
描述: IC TXRX ETH DUAL GIG 196-MAPBGA
標準包裝: 630
類型: 收發(fā)器
驅(qū)動器/接收器數(shù): 2/2
規(guī)程: 千兆位以太網(wǎng)
電源電壓: 4.5 V ~ 5.5 V
安裝類型: 表面貼裝
封裝/外殼: 196-LBGA
供應(yīng)商設(shè)備封裝: 196-MAPBGA(15x15)
包裝: 托盤
MC92604 Dual Gigabit Ethernet Transceiver Reference Manual, Rev. 1
Freescale Semiconductor
5-1
Chapter 5
System Design Considerations
This chapter consists of the following sections:
This chapter describes general system considerations for the MC92604 Dual Gigabit Ethernet transceiver,
including the following:
Device startup
Initialization and proper use of the configuration and control signals
Reference clock configuration
General recommendations
5.1
Reference Clock Configuration
The MC92604 provides the option of either a differential or single-ended source for the reference clock
input. The frequency of the clock signal applied to these inputs along with the settings on the configuration
inputs determine the speed at which the serial links operate. Also, the legal ranges of reference clock
frequencies vary depending on the state of the half-speed enable, HSE, input. Table 5-1 shows the
allowable ranges for each configuration.
Table 5-1. Legal Reference Clock Frequency Ranges
HSE
Reference Frequency
Min (MHz)
Reference Frequency
Max (MHz)
Link Transfer Rate
(Gigabaud)
Low
95.00
135.0
0.95–1.35
High
47.50
67.50
0.475–0.675
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