CEM600 EVDO Mini PCIE Module Hardware User Guide
Shang Hai YUGE Information Technology co., LTD
Page 17 of 25
It is recommended to connect 33
μ
capacitors in parallel between RUIM_CLK,
RUIM_DATA, RUIM_RESET and GND to filter out the interference of RF signals, and
connect 33 ohm resistors in series on RUIM_CLK, RUIM_DATA, RUIM_RESET. Also, be
careful to place the ESD protection device next to the RUIM deck.
The RUIM card interface reference design diagram is as follows:
Figure 5-8 RUIM card interface reference design
5.6 Control and general purpose I/O interface (optional feature)
Table 5-6 Control and General I/O Interface Definitions
Pin Signal name
I/O properties High value Description
17
INT0_OUT(GPIO)
Output
2.6V
Interrupt output, "low" is
valid, default is "high"
19
INT1_IN(GPIO)
Input
2.6V
Interrupt
input,
"low"
active, internal pullup
20
W_DISABLE_N(GPIO
)
Input
2.6V
RF is prohibited, "low" is
valid, internal pull-up
22
RESIN_N
Input
2.6V
Reset control, "low" active,
internal pullup
30
GPIO1
Two way
2.6V
General purpose input and
output signal 1(default is
input, internal pull-up)
31
GPIO2
Two way
2.6V
General purpose input and
output signal 1(default is
input, internal pull-up)
32
GPIO3
Two way
2.6V
General purpose input and
output signal 1(default is
input, internal pull-up)
33
GPIO4
Two way
2.6V
General purpose input and
