41110555
Rev 1.0
November 01, 2017
25
Product Technical Specification
Detailed Interface Specifications
3.3. VGPIO
The VGPIO output can be used to:
•
Pull-up signals such as I/Os
•
Supply the digital transistors driving LEDs
The VGPIO output is available when the AirPrime HL77xx module is switched ON.
Refer to the following table for the pad description of the VGPIO interface.
Table 11. VGPIO Pad Description
Pad Number
Signal Name
I/O
Description
45
VGPIO
O
GPIO voltage output
Refer to the following table for the electrical characteristics of the VGPIO interface.
Table 12. VGPIO Electrical Characteristics
Parameter
Minimum
Typical
Maximum
Remarks
Voltage level (V)
1.7
1.8
1.9
Both active mode and sleep mode
Current capability
Active Mode (mA)
-
-
TBD
Power management support up to
(TBD) mA output in Active mode
Current capability
Sleep Mode (mA)
-
-
TBD
Power management support up to
(TBD) mA output in Sleep mode
Rise Time (ms)
-
-
TBD
Start-Up time from 0V
3.4. USIM Interface
The AirPrime HL77xx modules have one physical USIM interface, USIM1, and an optional internal
USIM or eUICC.
The USIM1 interface allows control of a 1.8V USIM and is fully compliant with GSM 11.11
recommendations concerning USIM functions.
The five signals used by the UIM1 are as follows:
•
UIM1_VCC: Power supply
•
UIM1_CLK: Clock
•
UIM1_DATA: I/O port
•
UIM1_RESET: Reset
•
UIM1_DET/GPIO3: Hardware SIM detection
Refer to the following table for the pad description of the USIM1 interface.
