GL826 USB 2.0 Multi-Slot Flash Card Reader Controller
28, 27, 29, 32,
33, 34, 26, 25
30
SD_D7~0
B, pd SD data line
SD_CLK
SD_CMD
MS_BS
O, pd SD clock
31
44
1
B, pd SD command/response
O, pd MS/MSP bus state
I, pu MS insertion detect
MS_INS
19, 20, 18, 17
48, 47, 45, 46
3
MS_D7~0
B, pd MS/MSP data signal
O, pd MS clock
MS_CLK
5V
39
37
38
40
41
42
4
P
P
P
A
I
5V power input
MS power 250mA
SD power 200mA
Regulator reference voltage
XTAL 1
PMOSOZ_ MS
PMOSOB_SD
IREF
X1
X2
B
XTAL 2
EXTRSTZ
I, pu System reset
Notation:
Type
O
I
Output
Input
B
Bi-directional
pu
pd
P
internal pull-up when input
internal pull-down when input
Power / Ground
A
Analog
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