Hello everyone,
I have designed a PCB for EC200U-CN module for my project according to the hardware design guideline files. Module is getting detected via USB but the voltage at USIM_VDD is 0V even when the SIM Card is present.
AT Command Responce:
ATI
Quectel
EC200U
Revision: EC200UCNAAR02A10M08
OK
AT+CFUN?
+CFUN: 1
OK
AT+CPIN?
+CME ERROR: 10
AT+CSQ
+CSQ: 20,99
OK
AT+CREG?
+CREG: 0,2
OK
AT+CEREG?
+CEREG: 0,2
OK
AT+COPS?
+COPS: 0
OK
AT+QCFG=?
+QCFG: “nwscanmode”,(0,1,3),(0,1)
+QCFG: “band”,(0-FFFF),(0-7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF),(0,1)
+QCFG: “creg/emergency”,(0,1)
+QCFG: “pdp/retrytimes”,(0-10)
+QCFG: “qoos”,(0-2),(0-255),(0-255),(0-255)
+QCFG: “dftpdn”,<ip_version>,<apn_name>,<auth_type>,,
+QCFG: “airplanecontrol”,(0,1)
+QCFG: “qcsq/rssi/negative”,(0,1)
+QCFG: “nwparam/calib”,(0,1),(0,1)
+QCFG: “3gpprel”,(8-13)
+QCFG: “qcellinfo/fmt”,(0,1)
+QCFG: “usbnet”,(1,3)
+QCFG: “nat/cid”,(0-FFFFFFFF)
+QCFG: “nat/subnet”,(1-7),<net_address>,<subnet_mask>
+QCFG: “usbnetmac”,<mac_address>
+QCFG: “urc/ri/smsincoming”,(“off”,“pulse”),(1-2000),(1-5)
+QCFG: “urc/ri/other”,(“off”,“pulse”),(1-2000),(1-5)
+QCFG: “urc/ri/ring”,(“off”,“pulse”),(1-2000),(1-5)
+QCFG: “urc/delay”,(0-120)
+QCFG: “urc/cache”,(0,1)
+QCFG: “risignaltype”,(“respective”,“physical”)
+QCFG: “apready”,(0,1),(0,1)
+QCFG: “cmux/urcport”,(0-4)
+QCFG: “fota/cid”,(1-7)
+QCFG: “fota/times”,(0-120)
+QCFG: “fota/path”,
+QCFG: “pkalive/ip”,(1-2),<IP_address>,(0-65535)
+QCFG: “ledmode”,(0-2)
+QCFG: “led/sim”,(0,1)
+QCFG: “tone/incoming”,(0,2,3)
+QCFG: “sleepind/level”,(0,1)
+QCFG: “wakeupin/level”,(0,1),(0,1)
+QCFG: “ntp”,(1-10),(5-60)
OK
USIM Interface Schematic:
TVS Array:
SIM Card Connector:
