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| 型号： | S1R72V17B00A |
| 元件分类： | 总线控制器 |
| 英文描述： | UNIVERSAL SERIAL BUS CONTROLLER, PBGA60 |
| 封装： | 5 X 5 MM, 0.50 MM PITCH, PLASTIC, TFBGA-60 |
| 文件页数： | 24/45页 |
| 文件大小： | 3044K |
| 代理商： | S1R72V17B00A |
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6. Functional Description
S1R72V17*** Technical Manual (Rev.1.6)
EPSON
11
6.1.2
USB Port State Change Detection Status
The S1R72V17 LSI has the function to detect USB port status.
This function can be used in both SLEEP and ACTIVE states (see the section on Power Management).
6.1.2.1
Example Usage of USB Port State Change Detection Status
Examples of use of device port change status and host port change status are shown.
6.1.2.1.1
Device Port Change Status
This status indicates that VBUS pin of the device port has changed state.
Table 6.2 shows the register associated with the Device port pin change status.
Table 6.2 Resisters Associated with Device Port Change Status
Item
Register/Bit
Description
VBUS pin change
status
DeviceIntStat. VBUS_Changed
Indicates that the VBUS pin of the device port
has changed state.
VBUS pin change
status enable
DeviceIntEnb. EnVBUS_Changed
Enable/disables assertion of the
MainIntStat.USB_DeviceIntStat bit by
USB_DeviceIntStat.VBUS_Changed.
Device port VBUS
state
D_USB_Status. VBUS
Indicates the VBUS pin state of the device port.
If the device port status is changed, the firmware performs processing (1), (2), and (4) to (7).
(1) Clear the VBUS pin change status.
(2) Set the VBUS pin change status enable.
(3) When VBUS is supplied to a device port, a VBUS pin change status is issued.
(4) Check the VBUS pin change status.
(5) Clear the VBUS pin change status.
(6) Clear the VBUS pin change status enable.
(7) Check the device port VBUS status. If the device port VBUS status bit = 1, the firmware
determines that VBUS is supplied (i.e., the device port has a host or hub connected to it).
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相关代理商/技术参数 |
参数描述 |
|---|---|
| S1R72V17B00A20 | 制造商:Epson Electronics America Inc 功能描述:USB HS HOST/DEVICE CONTROLLER, |
| S1R72V18 | 制造商:EPSON 制造商全称:EPSON 功能描述:Built-in pull-down resistor for downstream ports (no external circuit required) |
| S1R72V27 | 制造商:EPSON 制造商全称:EPSON 功能描述:Built-in pull-down resistor for downstream ports (no external circuit required) |
| S1R77081F | 制造商:EPSON 制造商全称:EPSON 功能描述:RSDS Transmitter/Receiver |
| S1R8ADMTBK | 制造商:Hubbell Wiring Device-Kellems 功能描述:S1R FRPT 8 ABANDONMENT PLATE |
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