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| Ultra Fast USB 2.0 | |
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| Datasheet | |
Table 5.1 USB2250/50i/51/51i | |||||
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| BUFFER |
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NAME | SYMBOL | VTQFP | TYPE | DESCRIPTION |
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General Purpose | GPIO4 | 118 | I/O12 | GPIO: This pin may be used either as input, |
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I/O | (SCL/xD_ID) |
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| edge sensitive interrupt input, or output. |
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| O12 | SCL: This is the clock output when used with |
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| an external EEPROM. |
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| I/O12 | xD_ID: This is the xD card detection pin only |
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| applicable to the USB2250/USB2250i. |
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General Purpose | GPIO5 | 5 | I/O12 | This pin may be used either as input, edge |
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I/O | (SDA) |
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| sensitive interrupt input, or output. |
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| SDA: This is the data pin when used with an |
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| external serial EEPROM. |
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General Purpose | GPIO8 / | 14 | I/O12 | GPIO: This pin may be used either as input, |
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I/O | CRD_PWR0 |
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| edge sensitive interrupt input, or output. |
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| I/O200 | CRD_PWR: Card Power drive of 3.3V @ |
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| either 100mA or 200mA. |
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General Purpose | GPIO9 / | 78 | I/O12 | GPIO: This pin may be used either as input, |
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I/O | CRD_PWR1 |
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| edge sensitive interrupt input, or output. |
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| I/O200 | CRD_PWR: Card Power drive of 3.3V @ |
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| either 100mA or 200mA. |
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General Purpose | GPIO10 / | 76 | I/O12 | GPIO: These pins may be used either as |
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I/O | CRD_PWR2 |
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| input, edge sensitive interrupt input, or |
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| output. It is a requirement that this is the |
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| only FET used to power SM devices. Failure |
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| to do this will violate SM voltage specification |
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| on SM device pins. |
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| I/O200 | CRD_PWR: Card Power drive of 3.3V @ |
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| either 100mA or 200mA. |
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General Purpose | GPIO11 / | 16 | I/O12 | GPIO: These pins may be used either as |
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I/O | CRD_PWR3 |
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| input, edge sensitive interrupt input, or |
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| output. |
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| I/O200 | CRD_PWR: Card Power drive of 3.3V @ |
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| either 100mA or 200mA. |
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RESET Input | nRESET | 64 | IS | This active low signal is used by the system |
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| to reset the chip. The active low pulse should |
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| be at least 1μs wide. |
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TEST Input | TEST | 103 | I | This signal is used for testing the chip. User |
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| should normally tie this pin low externally, if |
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| the test function is not used. |
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Regulator | REG_EN | 6 | IPU | This signal is used to enable the internal |
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Enable |
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| 1.8V regulator. |
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Revision 1.1 | 18 | SMSC USB2250/50i/51/51i |
DATASHEET