Sierra Wireless AirPrime HL77 Series, Технические характеристики продукта

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41110555 Rev 1.0 November 01, 2017 26
Product Technical Specification Detailed Interface Specifications
Table 13. USIM1 Pad Description
Pad Number Signal Name Description Multiplex
26 UIM1_VCC 1.8V USIM1 Power supply
27 UIM1_CLK 1.8V USIM1 Clock
28 UIM1_DATA 1.8V USIM1 Data
29 UIM1_RESET 1.8V USIM1 Reset
64 UIM1_DET / GPIO3 1.8V USIM1 Detection GPIO3
Refer to the
following table for the electrical characteristics of the USIM1 interface.
Table 14. USIM1 Electrical Characteristics
Parameter Minimum Typical Maximum Remarks
UIM1 Interface Voltage (V)
(VCC, CLK, IO, RESET)
- 1.80 -
The appropriate output
voltage is auto detected and
selected by software.
UIM1 Detect - 1.80 - High active
UIM1_VCC Current (mA) - - 10 (TBC)
Refer to section 5.6 USIM1 Application for a USIM application example.
3.4.1. UIM1_DET
UIM1_DET is used to detect and notify the application about the insertion and removal of a USIM
device in the USIM socket connected to the main USIM interface (UIM1). When a USIM is inserted, the
state of UIM1_DET transitions from logic 0 to logic 1. Inversely, when a USIM is removed, the state of
UIM1_DET transitions from logic 1 to logic 0.
Enabling or disabling this USIM detect feature can be done using an AT command. Refer to document
[2] AirPrime HL77xx AT Commands Interface Guide for more information.
3.5. USB Interface
The AirPrime HL77xx modules have one Universal Serial Bus interface compliant with USB Rev 2.0
(self-powered).
Refer to the following table for the pad description of the USB interface.
Table 15. USB Pad Description
Pad Number Signal Name I/O Function
12 USB_D- I/O USB Data Negative
13 USB_D+ I/O USB Data Positive