参数资料
型号: AT73C209-EK
厂商: Atmel
文件页数: 54/63页
文件大小: 0K
描述: BOARD EVAL FOR AT73C209
标准包装: 1
系列: PMAAC™
主要目的: 电源管理,专用型: 手机
已用 IC / 零件: AT73C209
已供物品: 板,CD,文档
13.1.1
USB Rising Interrupt
The sequence of USB Rising Interrupt generation, is shown below.
Figure 13-1. USB Rising Interrupt DIagram
USB
Vusb
4.5V
High
Level
USBRMSK
USBFMSK
Time
Time
High
Level
Time
USBOK
High
Level
Time
ITB
High
Level
Time
Interrupt Generation
The sequence of the USB Rising Interrupt is described below.
? Put bit #1 of register 0x12 to High
? Plug USB input
? Put bit #1 of register 0x12 to Low
→ USB Mask Rising (USBRMSK) goes to High
→ bit #1 of register 0x11 (USBOK), goes to High Level
→ ITB output goes to Low Level
→ USB Mask Rising (USBRMSK) goes to Low
→ bit #1 of register 0x11 (USBOK), stay to High Level
→ ITB output goes to High Level
54
AT73C209
6365A–PMAAC–12-Mar-08
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