Charging; Sim Card Interface; Audio Interface; Table 3-11 Charging Interface Signal Definitions - Zte MG2639_V3 User Manual

3.1.11 Charging

MG2639 V3 module provides the charging of Li battery through the design of external circuits.
See section 4.5 for external reference design.
Classification No.
23
24
Charging
25
26
27
Note: the software doesn't support this interface by default, therefore it requires
customization.

3.1.12 SIM card interface

MG2639_V3 module supports the SIM card interface conforming to ISO 7816-3 standard, and it
supports SIM cards with two different standards: 1.8V and 3.0V.
Users should note that the SIM card's electrical interface should be defined exactly the same as
the SIM card socket.
Classification No.
14
11
SIM
12
13

3.1.13 Audio interface

MG2639_V3 module supports 2CH audio signal inputs/outputs. The two MIC inputs are internally
capacitive coupled with the offset voltage, and directly connected to the receiver. See the audio
interface signals in the table 3-2:
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Table 3-11 Charging interface signal definitions

Definitions I/O
BATSNS Input
ISENSE Input
VCHG Input
CHR_LDO Output
GATDRV Output

Table 3-12 SIM card interface signal definitions

Definitio I/O
ns
VSIM Output
SIM_RST Output
SIM_CLK Output
SIM_DATA I/O
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Description
Battery voltage
Charging control
detection
Battery current
Charging control
detection
Power Charging power supply
Charging control Charging on/off
Charging dynatron
Charging control
control
Description
SIM card voltage
SIM card reset
SIM card clock
SIM card data
User Manual
Remarks
Remarks
1.8V/3V, Max. output
current 30 mA
16