YUGE CEM600 EVDO Mini, Руководство пользователя

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CEM600 EVDO Mini PCIE Module Hardware User Guide
Shang Hai YUGE Information Technology co., LTD Page 18 of 25
output signal 1(default is
input, internal pull-up)
42 LED_WWAN_N Current input 3.3V
Work status light, "low" is
valid, default is "high"
44 LED_RES1_N Current input 3.3V Alternate LED light control
46 LED_RES2_N Current input 3.3V Alternate LED light control
GND Ground
INT0_OUT, INT1_IN, W_DISABLE_N: When the default functions of these 3 pins are not
used, they can be multiplexed into GPIO.RESIN_N: The module can be reset by pulling this
pin low for 50ms. This pin is sensitive to interference and should be protected when wiring.
LED_WWAN_N, LED_RES1_N (standby), LED_RES2_N (standby): These three pins are
controlled by SINK type current source mode, and the maximum current that can flow in is
40mA. When external LED lamp is connected, the current limiting resistor must be connected
in series, and the resistance value can be The rated voltage/rated current of the selected LED
lamp is calculated.
The reference design of the LED light interface is as follows:
Figure 5-9 LED lamp reference design
LED_WWAN_N is the working status indicator of the CEM600G module, which is controlled
by the module software. The status table is as follows:
Table 5-7 LED_WWAN_N Status Indicator Table
CEM600G working mode LED display status
Search network Single flash (cycle is 3s)
Successfully registered network, but in idle
state (ie, not in call or data transfer state)
Double flash (cycle is 3s)
Call or data transfer status Fast flashing (cycle is 0.2s)
5.7 Power interface
Table 5-8 Power Interface Definition
Pin Signal name I/O properties High value Description
2 VCC_3V3 power input 3.3V 3.3V main power supply
24 VCC_3V3 power input 3.3V
3.3V auxiliary power supply (optional
function)
39 VCC_3V3 power input 3.3V 3.3V main power supply