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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)： | 24/40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)
24
SMSC USB3450
DATASHEET
The receivers connect directly to the USB cable. The block contains a separate differential receiver
for HS and FS mode. Depending on the mode, the selected receiver provides the serial data stream
through the mulitplexer to the RX Logic block. The FS mode section of the FS/HS RX block also
consists of a single-ended receiver on each of the data lines to determine the correct FS LINESTATE.
For HS mode support, the FS/HS RX block contains a squelch circuit to insure that noise is never
interpreted as data.
6.4
Hi-Speed Transceiver
The SMSC Hi-Speed Transceiver consists of four blocks in the lower left corner of
Figure 2.1 on
page 9
. These four blocks are labeled HS XCVR, FS/LS XCVR, Resistors, and Bias Gen.
6.4.1
High Speed and Full Speed Transceivers
The USB3450 transceiver meets all requirements in the Hi-Speed specification.
The receivers connect directly to the USB cable. This block contains a separate differential receiver
for HS and FS mode. Depending on the mode, the selected receiver provides the serial data stream
through the multiplexer to the RX Logic block. The FS mode section of the FS/HS RX block also
consists of a single-ended receiver on each of the data lines to determine the correct FS linestate. For
HS mode support, the FS/HS RX block contains a squelch circuit to insure that noise is never
interpreted as data.
The transmitters connect directly to the USB cable. The block contains a separate differential FS and
HS transmitter which receive encoded, bit stuffed, serialized data from the TX Logic block and transmit
it on the USB cable.
6.4.2
Termination Resistors
The USB3450 transceiver fully integrates all of the USB termination resistors. The USB3450 includes
two 1.5k
pull-up resistors on DP and DM and a 15k
pull-down resistor on both DP and DM. In
addition the 45
high speed termination resistors are also integrated. These integrated resistors
require no tuning or trimming by the Link. The state of the resistors is determined by the operating
mode of the PHY. The possible valid resistor combinations are shown in
Table 6.1
. Operation is
guaranteed in the configurations given in
Table 6.1, "DP/DM termination vs. Signaling Mode"
.
■
RPU_DP_EN activates the 1.5k
DP pull-up resistor
Figure 6.7 Receive Timing for Data Packet (with CRC-16)
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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