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參數資料
| 型號： | W722 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | Universal Serial Bus (USB) Hub/Compound Device Controller(通用串行總線集線器/混合設備控制器) |
| 中文描述： | 通用串行總線（USB）集線器/復合設備控制器（通用串行總線集線器/混合設備控制器） |
| 文件頁數： | 7/18頁 |
| 文件大小： | 229K |
| 代理商： | W722 |
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I
W722 USB Hub/Compound Device Controller
I
5
Oki Semiconductor
SIGNAL DESCRIPTIONS
1.
{usb_dpin[0], usb_dmin[0], usb_dpout[0], usb_dmout[0], usb_rxd[0], usb_texnb[0]}: USB upstream port interface
{usb_dpin[i], usb_dmin[i], usb_dpout[i], usb_dmout[i], usb_rxd[i], usb_txenb[i]}, for i from 1 to n, is the USB downstream port interface for port i.
n = number of downstream ports.
USB Interface
Signal
Type
Assertion
Description
[n:0]
[1]
usb_dpin
Input
—
USB Data Plus In.
data from the USB transceiver. The table below shows values and results for these signals.
This input and the [n:0]usb_dmin input are the received single-ended
[n:0]usb_dmin
Input
—
USB Data Minus In.
data from the USB transceiver. See the table above for the description, values, and results
of the usb_dpin signals.
This input and the [n:0]usb_dpin input are the received single ended
[n:0]usb_dpout
Output
—
USB Data Plus Out
mit engine and drive the differential output buffers. The table below shows values and re-
sults for these signals.
. This output and the [n:0]usb_dmout signal come from the USB trans-
[n:0]usb_dmout
Output
—
USB Data Minus Out.
transmit engine and drive the differential output buffers. See the table above for the de-
scription, values, and results of the usb_dpout signals.
This output and the [n:0]usb_dpout signal come from the USB
[n:0]usb_rxd
Input
—
USB Differential Received Data.
connects to the W722 Megamacro Function.
This input comes from the USB differential receiver, and
[n:0]usb_txenb
Output
LOW
USB 3-State Output Enable.
inverter gate. When the W722 Megamacro function asserts this signal LOW, the transceiv-
er transmits data on the USB bus. See Appendix for the USB transceiver Data Sheets.
This signal connects to the transceiver EB input through an
usb_dpin
0
0
1
1
usb_dmin
0
1
0
1
Result
SE0
Logic “0”
Logic “1”
Undefined
usb_dpout
0
0
1
1
usb_dmout
0
1
0
1
Result
SE0
Logic “0”
Logic “1”
Undefined
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