參數(shù)資料
型號(hào)： GL828-PNG
廠商： Genesys Logic, Inc.
英文描述： USB 2.0 SD/MMC Single Slot Card Reader Controller
中文描述： 個(gè)USB 2.0 SD / MMC卡單槽讀卡機(jī)控制
文件頁(yè)數(shù)： 11/23頁(yè)
文件大?。?/td> 521K
代理商： GL828-PNG
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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