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TUSB2046BI Datasheet(PDF) 4 Page - Texas Instruments |
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TUSB2046BI Datasheet(HTML) 4 Page - Texas Instruments |
4 / 29 page 4 TUSB2046B, TUSB2046I SLLS413L – FEBRUARY 2000 – REVISED JUNE 2017 www.ti.com Product Folder Links: TUSB2046B TUSB2046I Submit Documentation Feedback Copyright © 2000–2017, Texas Instruments Incorporated 6 Pin Configuration and Functions VF Package 32-Pin LQFP Top View RHB Package 32-Pin VQFN With Thermal Pad Top View Pin Functions PIN I/O DESCRIPTION NAME NO. BUSPWR 8 I Power source indicator. BUSPWR is an active-high input that indicates whether the downstream ports source their power from the USB cable or a local power supply. For the bus-power mode, this terminal must be pulled to 3.3 V, and for the self-powered mode, this terminal must be pulled low. Input must not change dynamically during operation. DM0 2 I/O Root port USB differential data minus. DM0 paired with DP0 constitutes the upstream USB port. DM1 11 I/O USB differential data minus. DM1–DM4 paired with DP1–DP4 support up to four downstream USB ports. DM2 15 DM3 19 DM4 23 DP0 1 I/O Root port USB differential data plus. DP0 paired with DM0 constitutes the upstream USB port. DP1 12 I/O USB differential data plus. DP1–DP4 paired with DM1–DM4 support up to four downstream USB ports. DP2 16 DP3 20 DP4 24 EECLK 5 O EEPROM serial clock. When EXTMEM is high, the EEPROM interface is disabled. The EECLK terminal is disabled and must be left floating (unconnected). When EXTMEM is low, EECLK acts as a 3-state serial clock output to the EEPROM with a 100-μA internal pulldown. EEDATA/GA NGED 6 I/O EEPROM serial data/power-management mode indicator. When EXTMEM is high, EEDATA/GANGED selects between ganged or per-port power overcurrent detection for the downstream ports. When EXTMEM is low, EEDATA/GANGED acts as a serial data I/O for the EEPROM and is internally pulled down with a 100-μA pulldown. This standard TTL input must not change dynamically during operation. EXTMEM 26 I When EXTMEM is high, the serial EEPROM interface of the device is disabled. When EXTMEM is low, terminals 5 and 6 are configured as the clock and data terminals of the serial EEPROM interface, respectively. GND 7, 28 GND terminals must be tied to ground for proper operation. |
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