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TUSB8040_1110 Datasheet(PDF) 12 Page - Texas Instruments |
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TUSB8040_1110 Datasheet(HTML) 12 Page - Texas Instruments |
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12 / 33 page  TUSB8040 SLLSE42F – SEPTEMBER 2010 – REVISED OCTOBER 2011 www.ti.com Table 2-3. USB Downstream Signals (continued) PIN NO. SIGNAL NAME TYPE DESCRIPTION PFP RKM USB Port 2 Power On Control for Downstream Power/Battery Charging Enable. The terminal is used for control of the downstream power switch for Port 2. In addition, the value of the terminal is sampled at the de-assertion of reset to determine the value of the battery charger support for Port 2 as indicated in the Battery Charger PWRON2z_BATEN2 I/O, PD B20 Support register: 0 = Battery Charging Not Supported 1 = Battery Charging Supported USB Port 2 Over-Current Detection. 0 = An overcurrent event has occurred 1 = An overcurrent event has not occurred OVERCUR2z I, PU B22 This terminal should be pulled high using a 10K resistor if power management is not implemented. If power management is enabled, the external circuitry needed should be determined by the power switch. USB_SSTXP_DN3 O 49 B31 USB SuperSpeed transmitter differential pair (positive) USB_SSTXM_DN3 O 50 A34 USB SuperSpeed transmitter differential pair (negative) USB_SSRXP_DN3 I 47 B30 USB SuperSpeed receiver differential pair (positive) USB_SSRXM_DN3 I 48 A33 USB SuperSpeed receiver differential pair (negative) USB_DP_DN3 I/O 45 B29 USB High-speed differential transceiver (positive) USB_DM_DN3 I/O 44 A31 USB High-speed differential transceiver (negative) USB Port 3 Power On Control for Downstream Power/Battery Charging Enable. The terminal is used for control of the downstream power switch for Port 3. In addition, the value of the terminal is sampled at the de-assertion of reset to determine the value of the battery charger support for Port 3as indicated in the Battery Charger PWRON3z_BATEN3 I/O, PD A22 Support register: 0 = Battery Charging Not Supported 1 = Battery Charging Supported USB Port 3 Over-Current Detection. OVERCUR3z I, PU A24 0 = An overcurrent event has occurred 1 = An overcurrent event has not occurred USB Port 0 Amber LED Indicator & Device Removable Configuration Bit 1 = Device is Removable LEDA0z_RMBL0 I, PU B23 0 = Device is NOT Removable Device removable option can be set via I2C EEPROM or SMBUS host on the TUSB8040PFP USB Port 1 Amber LED Indicator & Device Removable Configuration Bit 1 = Device is Removable LEDA1z_RMBL1 I/O, PU B25 0 = Device is NOT Removable Device removable option can be set via I2C EEPROM or SMBUS host on the TUSB8040PFP USB Port 2 Amber LED Indicator & Device Removable Configuration Bit 1 = Device is Removable LEDA2z_RMBL2 I/O, PU B26 0 = Device is NOT Removable Device removable option can be set via I2C EEPROM or SMBUS host on the TUSB8040PFP USB Port 3 Amber LED Indicator & Device Removable Configuration Bit 1 = Device is Removable LEDA3z_RMBL3 I/O, PU B27 0 = Device is NOT Removable Device removable option can be set via I2C EEPROM or SMBUS host on the TUSB8040PFP 12 PIN DESCRIPTIONS Copyright © 2010–2011, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TUSB8040 |
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