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GL828 Datasheet(PDF) 11 Page - GENESYS LOGIC |
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GL828 Datasheet(HTML) 11 Page - GENESYS LOGIC |
11 / 23 page GL828 USB 2.0 SD/MMC Single Slot Card Reader Controller ©2000-2006 Genesys Logic Inc. - All rights reserved. Page 11 3.3 Pin Descriptions Table 3.2 - Pin Descriptions Pin name GL828 LQFP48 Pin Type Description VDD18O 4 P Internal regulator 1.8V output GND 5,9,12 P Analog ground AVDD 6,11 P Analog power DM 7 A USB D- DP 8 A USB D+ RREF 10 A Reference resistor X1 13 OSC 12MHz/48MHz input. This pin can be connected to one terminal of crystal or external 12MHz/48MHz clock source. X2 14 OSC 12MHz/48MHz output. This is another terminal of the crystal or NC when using an external 12MHz/48MHz clock source is used to drive PLL. DVDD 15,26,35 P Digital power 3.3V GND 16,27,34 P Digital ground VP5 25 P Regulator 5V Input PMOSO 36 PMOS Power MOS 3.3V Output TEST_MOD 17 I, pd Test mode selection EXTRSTZ 18 I, pu External reset. It is active low. The low pulse should be 1 us width at least. SD_CDZ 23 B/I, pd SD& MMC Card detection. Normal High, active low. D0~D7 40,43,37,29,28, 30,32,38 B/I, f SD data 0~3 MMC data 0~7 SD_CLK 39 B/I, f SD/MMC CLK SD_WPZ 3 B/I, pu SD Write Protect Detection. When no card is inserted, pull low. When SM or SD card is inserted, the pin is pull up and active low. SD_CMD 41 B/I, f SD/MMC CMD GPIO0~3 41,48,47,46 B/I, pd GPIO0~3 / GPIO3 : Power LED SK 19 B/I, pd 93C46 Clock CS 20 B/I, pd 93C46 CS DO 21 B/I, pd 93C46 Data out DI 22 B/I, pd 93C46 Data in / Access LED Notation: Type A Analog B Bi-directional B/I Bi-directional, default input B/O Bi-directional, default output I Input |
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