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FIBOCOM SU806 Series Hardware Guide
Page 37 of 86
1
0
0
K
22 R
22 R
18pF
22 R
22 R
V D D 1V 85
R S T
E S D
C onnector
V C C
D A T A
C LK
D E T
U IM _V D D
U IM _D A T A
U IM _C LK
U IM _R S T
M odule
U IM _D E T E C T
2
.2
uF
10 K
Figure 3-12 (U)SIM reference design
(U)SIM card design notice:
1) The length from the (U)SIM card holder to module should less than 100mm.
2) The layout and routing of the (U)SIM card must be kept away from EMI interference sources such as
RF antenna and digital switch power.
3) The decoupling capacitors of the (U)SIM card signal and the ESD device should be placed close to the
card holder.
3.7
SDIO
SU806D-EAU series module supports one SDIO interface. The pin definition is shown in the following
table:
Table 3-11 SDIO pin definition
Pin Name
Pin
Number
I/O
Description
Note
SD_DET
45
DI
SD card detect
Active low
SD_DATA3
44
I/O
SD card data3
-
SD_DATA2
43
I/O
SD card data2
-
SD_DATA1
42
I/O
SD card data1
-
SD_DATA0
41
I/O
SD card data0
-