- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385037 > TUSB2077 (Texas Instruments, Inc.) 7-PORT HUB FOR THE UNIVERSAL SERIAL BUS WITH OPTIONAL SERIAL EEPROM INTERFACE PDF資料下載
參數(shù)資料
| 型號(hào)： | TUSB2077 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 7-PORT HUB FOR THE UNIVERSAL SERIAL BUS WITH OPTIONAL SERIAL EEPROM INTERFACE |
| 中文描述： | 7 -端口通用串行總線與可選的串行EEPROM接口集線器 |
| 文件頁(yè)數(shù)： | 9/16頁(yè) |
| 文件大?。?/td> | 242K |
| 代理商： | TUSB2077 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)當(dāng)前第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)
TUSB2077A
7-PORT HUB FOR THE UNIVERSAL SERIAL BUS
WITH OPTIONAL SERIAL EEPROMINTERFACE
SLLS414 – MARCH 2000
9
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
The following sections provide block diagram examples of how to implement the TUSB2077A device. Please
note, even though no resistors are shown, pullup, pulldown and series resistors must still be used to properly
implement this device.
Figure 6 is a block diagram example of how to connect the external EEPROM if a custom Product ID and Vendor
ID are desired.
Figure 7 is an example of how to generate the 6-MHz clock signal. Figure 8 shows the EEPROM Read Operation
Timing Diagram. Figures 9, 10, and 11 illustrate how to connect the TUSB2077A device for different power
source and port power management combinations.
1 k
DP0
DM0
EEDATA
TUSB2077A USB Hub
System
Power-On Reset
Regulator
Power
Switching
OVRCUR1 –
OVRCUR7
PWRON1 –
PWRON7
EECLK
RESET
XTAL1
EXTMEM
VCC
GND
DP1 – DP7
DM1 – DM7
GND
Vbus
5 V GND
XTAL2
USB Data lines
and Power to
Downstream
Ports
Bus or Local Power
6-MHz Clock
Signal
7
7
7
7
45
44
6
3
4
8
7
9, 46
5, 24, 43
14, 18, 22, 27, 31, 35, 39
12, 16, 20, 25, 29, 33, 37
13, 17, 21, 26, 30, 34, 38
11, 15, 19, 23, 28, 32, 36
5
8
6
2
4
3
ORG
VCC
VSS
D
Q
C
S
1
EEPROM
3.3 V
47
Figure 6. Typical Application of the TUSB2077A USB Hub
XTAL1
XTAL2
NOTE A: Figure 7 assumes a 6 MHz fundamental crystal that is parallel loaded. The component values of C1, C2 and Rd were determined
using a crystal from Fox Electronics– part number HC49U–6.00MHz30\50\0
±
70\20 which means
±
30 ppm at 25
°
C and 50 ppm from
0
°
C to 70
°
C. The characteristics for the crystal are load capacitance (CL) of 20 pF, maximum shunt capacitance (Co) of 7 pF and the
maximum ESR of 50
.
In order to insure enough negative resistance, use C1 = C2 = 27 pF. The resistor Rd is used to trim the gain,
and Rd = 1.5 k
Rd
C2
C1
CL
Figure 7. Crystal Tuning Circuit
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TUSB5052B | USB to 2-Serial + 1-Parallel Controller With Configurable Optional Hub |
| TV15C220J | SMD Transient Voltage Suppressor |
| TV30C101J | SMD Transient Voltage Suppressor |
| TV30C580J | SMD Transient Voltage Suppressor |
| TV30C8V0K-G | SMD TRANSLENT VOLTAGE SUPPRESSOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TUSB2077A | 制造商:TI 制造商全稱:Texas Instruments 功能描述:7-PORT HUB FOR THE UNIVERSAL SERIAL BUS WITH OPTIONAL SERIAL EEPROM INTERFACE |
| TUSB2077APT | 功能描述:USB 接口集成電路 7-Port Hub W/Opt Ser EEPROM Ifc RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| TUSB2077APT | 制造商:Texas Instruments 功能描述:HUB UNI SERIAL BUS 7 PORT 48LQFP 制造商:Texas Instruments 功能描述:HUB, UNI SERIAL BUS, 7 PORT, 48LQFP 制造商:Texas Instruments 功能描述:HUB, UNI SERIAL BUS, 7 PORT, 48LQFP; USB Type:USB Transceiver; USB Version:1.1; Supply Voltage Min:3V; Supply Voltage Max:3.6V; Digital IC Case Style:LQFP; No. of Pins:48; Data Rate:12Mbps; No. of Ports:7; Operating Temperature ;RoHS Compliant: Yes |
| TUSB2077APTG4 | 功能描述:USB 接口集成電路 7-Port USB Hub RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| TUSB2077APTR | 功能描述:USB 接口集成電路 7-Port Hub W/Opt Ser EEPROM Ifc RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。