参数资料
型号: MC92603VF
厂商: Freescale Semiconductor
文件页数: 93/126页
文件大小: 0K
描述: IC TXRX ETH QUAD GIG 256-MAPBGA
标准包装: 1
类型: 收发器
驱动器/接收器数: 4/4
规程: 千兆位以太网
电源电压: 4.5 V ~ 5.5 V
安装类型: 表面贴装
封装/外壳: 256-LBGA
供应商设备封装: 256-MAPBGA
包装: 托盘
MC92603 Quad 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 MC92603 Quad 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 MC92603 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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