Ultra Fast USB 2.0 SD/MMC Flash Media Controller
Datasheet
Chapter 10 GPIO Usage
Table 10.1 USB2244/USB2244i GPIO Usage (ROM Rev 0x00)
NAME | ACTIVE LEVEL | SYMBOL | DESCRIPTION AND NOTE |
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GPIO1 | H | LED1 | LED indicator |
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GPIO2 | H | RXD / SDA | Receive Port of Debugger / Serial |
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| EEPROM Data |
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GPIO4 | USER | GPIO | User defined |
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GPIO7 | H | TXD / SCK | Transmit Port of Debugger / Serial |
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| EEPROM Clock |
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GPIO10 | L | CRD_PWR | Card Power Control |
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GPIO12 | USER | GPIO | User defined |
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GPIO14 | USER | GPIO | User defined |
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GPIO15 | L | SD_nCD | Secure Digital card detect |
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Revision 1.0 | 22 | SMSC USB2244/USB2244i |
DATASHEET