SMSC USB2242 - Manual (Page 23)

Ultra Fast USB 2.0 Memory Stick Flash Media Controller
Datasheet
SMSC USB2242/USB2242i 23 Revision 1.0 (05-27-08)
DATASHEET
Chapter 10 GPIO Usage
Table 10.1 USB2242/USB2242i GPIO Usage (ROM Rev 0x00)
NAME ACTIVE LEVEL SYMBOL DESCRIPTION AND NOTE
GPIO1 H LED1 LED indicator
GPIO2 H RXD / SDA Receive Port of Debugger / Serial
EEPROM Data
GPIO4 USER GPIO User defined
GPIO7 H TXD / SCK / MS_SKT_SEL Transmit Port of Debugger / Serial
EEPROM Clock / Memory Stick Socket
(1 = 8 bit; 0 = 4 bit)
GPIO10 L CRD_PWR Card Power Control
GPIO12 L MS_INS Memory Stick Card Insertion
GPIO14 USER GPIO User defined
GPIO15 USER GPIO User defined