Users Manual Part 1

SIM8260A_Hardware Design_V1.05
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USB_SS_TX_P
A13
AO
USB3.1 super-speed
transmit data plus
Required 85Ω
differential Impedance
Compliant with USB 3.1
standard specifications
USB_SS_TX_M
B14
AO
USB3.1 super-speed
transmit data minus
USB_SS_ RX_P
B10
AI
USB3.1 super-speed receive
data plus
USB_SS_RX_M
A9
AI
USB3.1 super-speed receive
data minus
USB_ID*
C11
DI
P3
USB ID
If unused, please keep
open
OTG_EN*
D10
DO
P3
USB OTG power supply
DC-DC enable signal
USB_SS_SW
C13
DO
P3
USB Type-C switch control
signal, Used without
PM7250B
PM7250B interface
2
CHG_SYS_OK
C43
DI
When charger input is
inserted, PM7250B output
signal to Module. When the
charging chip is not used,
this pin can be connected to
GND to realize the power-on
function
FAULT_N
B44
DIO
Used to send/receive the
fault condition across all
PMICs in the chipset
SPMI_CLK
A47
DO
SPMI communication bus
clock signal
Required 50Ω
impedance
SPMI_DATA
B46
DIO
SPMI communication bus
data signal
(U)SIM interface
(U)SIM1_VDD
B51
PO
P4
Power supply for (U)SIM1
card
1.8/3.0V voltage domain,
(U)SIM interface should
be protected against
ESD.
If unused, please keep
open
(U)SIM1_DATA
E51
DIO
P4
(U)SIM1 card data signal,
which has been pulled up to
(U)SIM1_VDD by a 20K
resistor in Module
(U)SIM1_CLK
D49
DO
P4
(U)SIM1 clock signal
(U)SIM1_RST
C51
DO
P4
(U)SIM1 reset signal
(U)SIM1_DET
E47
DI
P3
(U)SIM1 card detect signal,
which need pulled up to
VDD_EXT by a 470K resistor
externally
(U)SIM2_VDD
F49
PO
Power supply for (U)SIM2
card