USB3310 Pin Locations and Descriptions
Package Diagram with Pin Locations
The pinout below is viewed from the top of the package.
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| RBIAS |
| REFCLK | RESETB |
| VDD1.8 | STP |
| DIR |
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| 24 | 23 | 22 | 21 |
| 20 | 19 |
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ID |
| 1 |
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| 18 |
| NXT | |
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VBUS |
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| 24Pin QFN |
| 17 |
| DATA0 | |||||||
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VBAT |
| 3 |
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| 16 |
| DATA1 | ||||||||
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VDD3.3 |
| 4 |
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| 15 |
| REFSEL[0] | |||||
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DM |
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| 14 |
| REFSEL[1] | |
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DP |
| 6 |
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| 13 |
| DATA2 | |
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| 7 | 8 | 9 | 10 |
| 11 | 12 |
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| DATA7 |
| DATA6 |
| DATA5 |
| DATA4 | CLKOUT |
| DATA3 |
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Figure 2 USB3310 QFN Pinout - Top View
Pin Definitions
The following table details the pin definitions for the figure above.Table 1 USB3310 Pin Description
PIN |
| DIRECTION/ | ACTIVE |
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BALL | NAME | TYPE | LEVEL | DESCRIPTION |
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1 | ID | Input, | N/A | ID pin of the USB cable. For |
B1 |
| Analog |
| applications this pin can be floated. For |
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| Device ID is floated. |
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2 | VBUS | I/O, | N/A | VBUS pin of the USB cable. This pin is |
C1 |
| Analog |
| used for the Vbus comparator inputs and |
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| for Vbus pulsing during session request | |
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| protocol. |
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3 | VBAT | Power | N/A | Regulator input. The regulator supply can |
C2 |
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| be from 5.5V to 3.1V. |
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Revision 1.11 | PRODUCT4 PREVIEW | SMSC USB3310 REV C |