參數(shù)資料
型號: GT3200-JN
廠商: STANDARD MICROSYSTEMS CORP
元件分類: 網(wǎng)絡接口
英文描述: USB2.0 PJY IC
中文描述: DATACOM, INTERFACE CIRCUIT, PQFP64
封裝: 7 X 7 MM, 1.40 MM HEIGHT, TQFP-64
文件頁數(shù): 19/51頁
文件大?。?/td> 1462K
代理商: GT3200-JN
USB2.0 PHY IC
SMSC GT3200, SMSC USB3250
14
Revision 1.3 (10-05-04)
DATASHEET
6.2
High-speed Signaling Eye Patterns
High-speed USB signals are characterized using eye patterns. For measuring the eye patterns 4
points have been defined (see
Figure 6.3
). The Universal Serial Bus Specification Rev.2.0 defines the
eye patterns in several 'templates'. The two templates that are relevant to the PHY are shown below.
Figure 6.2 Full-Speed Driver VOL/IOL Characteristics for High-speed Capable Transceiver
V
out
(Volts)
V
OH
0
0
Drive Low
I
out
(mA)
22
1.09V
0.434*V
OH
Test Limit
Slope = 1/40.5 Ohm
Slope = 1/49.5 Ohm
10.71 * |V
OH
|
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