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参数资料
| 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： | 38/45页 |
| 文件大小： | 3044K |
| 代理商： | S1R72V17B00A |
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6. Functional Description
S1R72V17*** Technical Manual (Rev.1.6)
EPSON
23
b
a
b
c
Host to Device
Device to Host
Fig. 6.5 Control transfer in device mode when the data stage is set in the OUT direction
Fig. 6.6 shows how a Control transfer is performed in device mode in cases in which the data stage is
set in the IN direction. In (a), the host starts a control transfer by means of a SETUP transaction. The
firmware of the device analyzes the content of the request to get ready to respond to a data stage. In (b),
the host issues an IN transaction to execute a data stage, and the device transmits data. In (c), the host
issues an OUT transaction to execute a status stage, and the device responds to it with ACK.
Transition to the status stage is accomplished by issuing a transaction for the direction opposite to the
data stage from the host. The firmware monitors the OUT_TranNAK status
(D_EP0IntStat.OUT_TranNAK bit) to seize a chance for transition from the data stage to the status stage.
b
a
b
c
Host to Device
Device to Host
Fig. 6.6 Control transfer in device mode when the data stage is set in the IN direction
For the data and status stages of control transfers, a flow control by NAK is enabled, because ordinary
OUT and IN transactions are performed in those stages. The device is allowed to get ready to respond
within a designated time.
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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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