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TUSB211-Q1 Datasheet(PDF) 7 Page - Texas Instruments |
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TUSB211-Q1 Datasheet(HTML) 7 Page - Texas Instruments |
7 / 21 page TUSB211 USB TRANSCEIVER D2P D2M High Speed Compensation USB CONNECTOR Low and Full Speed Bypass ESD PROTECTION D1P D1M Status flags OPTIONAL PLD CD ENA_HS Copyright © 2016, Texas Instruments Incorporated 7 TUSB211, TUSB211I, TUSB211-Q1 www.ti.com SLLSEO0C – MAY 2015 – REVISED JUNE 2016 Product Folder Links: TUSB211 TUSB211I TUSB211-Q1 Submit Documentation Feedback Copyright © 2015–2016, Texas Instruments Incorporated 7 Detailed Description 7.1 Overview The TUSB211 is a USB High-Speed (HS) signal conditioner, designed to compensate for ISI signal loss in a transmission channel. TUSB211 has a patent-pending design which is agnostic to USB Low Speed (LS) and Full Speed (FS) signals and does not alter their signal characteristics, while HS signals are compensated. In addition, the design is compatible with USB On-The-Go (OTG) and Battery Charging (BC) specifications. Programmable signal gain through an external resistor permits fine tuning device performance to optimize signals helping to pass USB HS electrical compliance tests at the connector. The footprint of TUSB211 allows a board layout using this device such that it does not break the continuity of the DP/DM signal traces. This permits risk free system design of a complete USB channel with flexible use of one or multiple TUSB211 devices as needed for optimal signal integrity. This allows system designers to plan for this device and use it only if signal integrity analysis and/or lab measurements show a need. If such a need is not warranted, the device can be left unpopulated without any board rework. 7.2 Functional Block Diagram 7.3 Device Functional Modes 7.3.1 Low Speed (LS) Mode TUSB211 automatically detects a LS connection and does not enable signal compensation. CD pin is asserted high. 7.3.2 Full Speed (FS) Mode TUSB211 automatically detects a FS connection and does not enable signal compensation. CD pin is asserted high. 7.3.3 High Speed (HS) Mode TUSB211 automatically detects a HS connection and enables signal compensation as determined by the configuration of the external pulldown resistance on its EQ pin. ENA_HS pin asserted high in addition to the CD pin. 7.3.4 Disable Mode TUSB211 can be disabled when its RSTN pin is asserted low. The USB channel is still fully operational, but there is neither signal compensation, nor any indication from the CD pin or ENA_HS pin as to the status of the channel. |
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