TUSB2046B
- Fully Compliant With the USB Specification as a Full-Speed Hub: TID #30220231
- 32-Pin LQFP (1) Package With a 0.8-mm Terminal Pitch or QFN Package With a 0.5-mm Pin Pitch
- 3.3-V Low-Power ASIC Logic
- Integrated USB Transceivers
- State Machine Implementation Requires No Firmware Programming
- One Upstream Port and Four Downstream Ports
- All Downstream Ports Support Full-Speed and Low-Speed Operations
- Two Power Source Modes
- Self-Powered Mode
- Bus-Powered Mode
- Power Switching and Overcurrent Reporting Is Provided Ganged or Per Port
- Supports Suspend and Resume Operations
- Supports Programmable Vendor ID and Product ID With External Serial EEPROM
- 3-State EEPROM Interface Allows EEPROM Sharing
- Push-Pull Outputs for PWRON Eliminate the Need for External Pullup Resistors
- Noise Filtering on OVRCUR Provides Immunity to Voltage Spikes
- Package Pinout Allows 2-Layer PCB
- Low EMI Emission Achieved by a 6-MHz Crystal Input
- Migrated From Proven TUSB2040 Hub
- Lower Cost Than the TUSB2040 Hub
- Enhanced System ESD Performance
- No Special Driver Requirements; Works Seamlessly With Any Operating System With USB Stack Support
- Supports 6-MHz Operation Through a Crystal Input or a 48-MHz Input Clock
(1)JEDEC descriptor S-PQFP-G for low-profile quad flatpack (LQFP).
The TUSB2046x is a 3.3-V CMOS hub device that provides one upstream port and four downstream ports in compliance with the Universal Serial Bus (USB) specification as a full-speed hub. Because this device is implemented with a digital state machine instead of a microcontroller, no firmware
programming is required. Fully compliant USB transceivers are integrated into the ASIC for all upstream and downstream ports. The downstream ports support full-speed and low-speed devices by automatically setting the slew rate according to the speed of the device attached to the ports. The configuration of the BUSPWR pin selects either the bus-powered or the self-powered mode.
Configuring the GANGED input determines the power switching and overcurrent detection modes for the downstream ports. If GANGED is high, all PWRON outputs switch together and if any OVRCUR is activated, all ports transition to the power-off state. If GANGED is low, the PWRON outputs and OVRCUR inputs operate on a per-port basis.
The TUSB2046x provides the flexibility of using a 6-MHz or a 48-MHz clock. The logic level of the TSTMODE terminal controls the selection of the clock source. When TSTMODE is low, the output of the internal APLL circuitry is selected to drive the internal core of the device. When TSTMODE is high, the TSTPLL/48MCLK input is selected as the input clock source and the APLL circuitry is powered down and bypassed. The internal oscillator cell is also powered down while TSTMODE is high. Low EMI emission is achieved because the TUSB2046x can usee a 6-MHz crystal input. Connect the crystal as shown in Figure 6. An internal PLL then generates the 48-MHz clock used to sample data from the upstream port and to synchronize the 12 MHz used for the USB clock. If low-power suspend and resume are desired, a passive crystal or resonator must be used. However, a 6-MHz oscillator may be used by connecting the output to the XTAL1 pin and leaving the XTAL2 pin open. The oscillator TTL output must not exceed 3.6 V.
For 48-MHz operation, the clock cannot be generated with a crystal using the XTAL2 output because the internal oscillator cell supports only the fundamental frequency. Other useful features of the TUSB2046x include a package with a 0.8-mm pin pitch for easy PCB routing and assembly, push-pull outputs for the PWRON pins eliminate the need for pullup resistors required by traditional open-collector I/Os, and OVRCUR pins have noise filtering for increased immunity to voltage spikes.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | TUSB2046x 4-Port Hub for the Universal Serial Bus With Optional Serial EEPROM Interface datasheet (Rev. L) | PDF | HTML | 2017年 6月 28日 |
* | Errata | TUSB2046B Errata | 2006年 10月 3日 | |
Application note | TUSB2046B Schematic Checklist | 2018年 8月 13日 | ||
Application note | TI USB 1.1/USB 2.0 Hub Frequently Asked Questions | 2011年 3月 4日 |
設計與開發
如需其他條款或必要資源,請按一下下方的任何標題以檢視詳細頁面 (如有)。
DP83TC811EVM — DP83TC811 100BASE-T1 轉 100BASE-TX 車用乙太網路 PHY 媒體轉換器評估模組
The DP83TC811EVM is IEEE 802.3bw compliant, supporting 100BASE-T1. The DP83TC811R and DP83822H are configured in RGMII back-to-back, allowing a seamless media conversion from 100BASE-T1 to 100BASE-TX. This design has been tested and validated at UNH for 100BASE-T1 compliance.
The DP83TC811EVM (...)
EVM430-FR6043 — MSP430FR6043 超音波感測評估模組
EVM430-FR6047 — MSP430FR6047 超音波感測評估模組
The EVM430-FR6047 evaluation kit is a development platform to evaluate the performance of the MSP430FR6047 MCUs for ultrasonic sensing applications (e.g. smart water meters). The MSP430FR6047 MCU is an ultra-low-power device with an integrated ultrasonic sensing analog front end (USS) for high (...)
EVM430-FR6989 — MSP430FR6989 evaluation module for extended scan interface (ESI) enabled ultra-low power MCU
Developing Flow meter design for Water, Gas and Heat meters with the Ultra-low-power MSP430FRx FRAM microcontroller Family is now enabled by the EVM430-FR6989 reference board. The EVM430-FR6989 (Water Meter reference design) kit is an easy-to-use Evaluation Module for the MSP430FR698x family of (...)
TPS2071EVM-159 — TPS207x 評估模組
- Bus-powered input voltage range (BP), 0 to 100 mA/port, 4.75 V min to 5.25 V max
- Self-power input voltage range (SP), 0 to 500 mA/port, 4.85 V min to 5.15 V max
- Downstream output voltage range in bus-powered mode, 0 to 100 mA/port, 4.4 V min to 5.25 V max
- Downstream output voltage range in (...)
MSP-EXP430F5529LP — 適用 USB 的 MSP430F5529 LaunchPad™ 開發套件
CAPTIVATE-PGMR — MSP430 CapTIvate MCU 編程器
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
TINA-TI — 基於 SPICE 的類比模擬程式
TIDM-LC-WATERMTR — 採用擴充掃描介面 (ESI) 且適用兩個 LC 感測器的水表參考設計
TIDM-3LC-METER-CONV — 採用擴充掃描介面 (ESI) 且適用三個 LC 感測器的水表參考設計
TIDM-FLOWESI-ETRACE — 使用 FlowESI GUI 和 EnergyTrace 的代碼產生和最佳化參考設計
設計電池供電應用時,超低功耗是延長系統使用壽命的關鍵因素。長效設計不得浪費提供的能源。儘管選擇了適當的低功耗硬體元件,但韌體在降低功耗方面亦也扮演了重要角色
。
TIDM-OPTICALWATERMTR — 採用擴充掃描介面 (ESI) 並適用於光學感測器的水錶參考設計
TIDM-GMR-WATERMTR — 採用擴充掃描介面 (ESI) 且適用 GMR 感測器的水表參考設計
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
LQFP (VF) | 32 | Ultra Librarian |
VQFN (RHB) | 32 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。