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參數(shù)資料
| 型號： | USB3450 |
| 廠商： | SMSC Corporation |
| 英文描述： | HI-SPEED USB HOST OR DEVICE PHY WITH UTMI+INTERFACE |
| 中文描述： | 高速USB主機或設備與UTMI接口物理層 |
| 文件頁數(shù)： | 20/40頁 |
| 文件大?。?/td> | 1086K |
| 代理商： | USB3450 |
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Hi-Speed USB Host or Device PHY With UTMI+ Interface
Datasheet
Revision 0.1 (05-11-05)
20
SMSC USB3450
DATASHEET
Chapter 6 Detailed Functional Overview
Figure 2.1 on page 9
shows the functional block diagram of the USB3450. Each of the functions is
described in detail below.
6.1
8bit Bi-Directional Data Bus Operation
The USB3450 supports an 8-bit bi-directional parallel interface.
■
CLKOUT runs at 60MHz
■
The 8-bit data bus (DATA[7:0]) is used for transmit when TXVALID = 1
■
The 8-bit data bus (DATA[7:0]) is used for receive when TXVALID = 0
Figure 6.1
shows the relationship between CLKOUT and the transmit data transfer signals in FS mode.
TXREADY is only asserted for one CLKOUT per byte time to signal the Link that the data on the DATA
lines has been read by the PHY. The Link may hold the data on the DATA lines for the duration of the
byte time. Transitions of TXVALID must meet the defined setup and hold times relative to CLKOUT.
Figure 6.2
shows the relationship between CLKOUT and the receive data control signals in FS mode.
RXACTIVE “frames” a packet, transitioning only at the beginning and end of a packet. However
transitions of RXVALID may take place any time 8 bits of data are available.
Figure 6.2
also shows
how RXVALID is only asserted for one CLKOUT cycle per byte time even though the data may be
presented for the full byte time. The XCVRSELECT signal determines whether the HS or FS timing
relationship is applied to the data and control signals.
Figure 6.1 FS CLK Relationship to Transmit Data and Control Signals
Figure 6.2 FS CLK Relationship to Receive Data and Control Signals
相關PDF資料 |
PDF描述 |
|---|---|
| USB3450-FZG | HI-SPEED USB HOST OR DEVICE PHY WITH UTMI+INTERFACE |
| USB97C201 | USB 2.0 ATA/ ATAPI Controller |
| USB97C201-MC | USB 2.0 ATA/ ATAPI Controller |
| USB97C201-MN | USB 2.0 ATA/ ATAPI Controller |
| USB97CFDC-MN | USB FLOPPY DISK CONTROLLER |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| USB3450-FZG | 功能描述:接口 - 專用 USB 2.0 PHY UTMI RoHS:否 制造商:Texas Instruments 產品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
| USB-3488A | 功能描述:數(shù)據(jù)記錄與采集 HIGH PERF IEEE-488 USB DAQ GPIB INT CON RoHS:否 制造商:Lantronix 描述/功能:Analog device server 顯示器類型:None 電流額定值: |
| USB3500 | 制造商:SMSC 制造商全稱:SMSC 功能描述:Hi-Speed USB Host, Device or OTG PHY With UTMI+ Interface |
| USB3500-ABZJ | 功能描述:接口 - 專用 USB 2.0 PHY UTMI RoHS:否 制造商:Texas Instruments 產品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
| USB3503 | 制造商:SMSC 制造商全稱:SMSC 功能描述:USB 2.0 HSIC High-Speed Hub Controller Optimized for Portable Applications |
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