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参数资料
| 型号： | RX-4571SA |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO14 |
| 封装： | ROHS COMPLIANT, SOP-14 |
| 文件页数： | 24/76页 |
| 文件大小： | 1924K |
| 代理商： | RX-4571SA |
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USB 2.0 Hi-Speed Hub Controller
Datasheet
Revision 1.1 (04-26-10)
30
SMSC USB251x
DATASHEET
Figure 6.1 shows a simple example of how this LED circuit will be implemented. The circuit should be
replicated for each of the x LED pins on the SMSC hub. In this circuit, when the LED pin is driven to
a logic low state, the Green LED will light up. When the LED pin is driven to a Logic High state the
Red LED will light up. When a 1 KHz square wave is driven out on the LED pin, the Green and Red
LED's will both alternately light up giving the effect of the color Orange. When nothing is driven out on
the LED pin (i.e. the pin floats to a "tri-state" condition), neither the Green nor Red LED will light up,
this is the "Off" state.
The assignment is as follows:
LED_A_N[x:1] = LED D[x:1] (Downstream Port [x:1])
The usage is as follows:
LED_A_N[x] Driven to Logic Low = LS device attached (Green LED)
LED_A_N[x] Driven to Logic High = FS device attached (Red LED)
LED_A_N[x] Pulsed @ 1 KHz = HS device attached (Orange color by pulsing Red & Green).
LED_A_N[x] is tri-state= No devices are attached, or the hub is in suspend, LED's are off.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| RX-4571SAB | 制造商:Epson Toyocom Corporation 功能描述:Cut Tape |
| RX-4574LC | 制造商:EPSONTOYOCOM 制造商全称:Epson ToYoCom 功能描述:SERIAL-INTERFACE REAL TIME CLOCK MODULE |
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