Hardware Development Guide of Module Product
All Rights reserved, No Spreading abroad without Permission of ZTEWelink
15
PIN
Signal Definition
Pin
Voltage
I/O
PIN Attribute
PU/PD
Status
Remark
75
JTAG_TDO
P1
--
NC
--
If it is not used, NC
76
JTAG_TDI
P1
--
NC
--
If it is not used, NC
77
JTAG_TMS
P1
--
NC
--
If it is not used, NC
78
GND
--
--
Ground
--
Mandatory
79.-
108.
GND
--
--
Heat-dissipation
welder
--
Mandatory
Note: “NC” indicates Not Connected. That is, there is no connection inside the module. P1 and P2 refer to the
power-supply signal level group 1 and 2.
3.2
Working Condition
Table 3-3 Working Condition
Signal
Description
Min
Typical
Max
Unit
VPH_PWR Main power supply of
the module
3.4
3.8
4.2
V
USB_VBUS Power supply PIN of
USB PHY
3.3
5
5.25
V
ADC
Analog input
0
--
2.2
V
VDD_P1
Voltage of PIN group
P1
1.65
1.8
1.95
V
VDD_P2
Voltage of PIN group
P2
2.7
2.85
3
V
Note: The typical voltage refers to the default I/O voltage of P1 and P2 PIN group. It is required that the external input PIN
provides this voltage. 2. The voltage design of external circuit interfaces should match that of the ZM5202 PINs. 3. When
VPH_PWR works within the voltage range, it can reach good whole-set performance. If it is lower than the minimum value,
the whole-set performance will be affected, or the module cannot work normally. If it is higher than the maximum value, the
module might be damaged.