Specifications
Table Of Contents
- Contents
- Tables
- Figures
- 1 Introduction
- 2 Interface Characteristics
- 2.1 Application Interface
- 2.2 RF Antenna Interface
- 2.3 Sample Application
- 3 Operating Characteristics
- 3.1 Operating Modes
- 3.2 Power Up/Power Down Scenarios
- 3.3 Power Saving
- 3.4 Power Supply
- 3.5 Operating Temperatures
- 3.6 Electrostatic Discharge
- 3.7 Blocking against RF on Interface Lines
- 3.8 Reliability Characteristics
- 4 Mechanical Dimensions, Mounting and Packaging
- 5 Regulatory and Type Approval Information
- 6 Document Information
- 7 Appendix
Cinterion
®
ELS81-US Hardware Interface Description
1.3 Circuit Concept
14
els81-us_hid_v01.004 2017-09-27
Confidential / Preliminary
Page 13 of 107
1.3 Circuit Concept
Figure 2 and Figure 3 show block diagrams of the ELS81-US module and illustrate the major
functional components:
Figure 2: ELS81-US block diagram
SD1 SD2
SD2
LDOs
PMU
LDOs
ON
Reset_BB
SD3
I2CDAT
I2CCLK
USB
GPIO
SIM
CCIN
LPDDR2
SDRAM
FLASH
VDD
VDD
ADQ0 ~ ADQ15
DDR_CA _0~DDR _CA _9
DDR _DQ_0~DDR _DQ_1 5
Control
Control
CCIN
SIM
GPIO
ASC0
USB
I2C
ON circuit
ON
EMERG _RST
BATT+
BB
RX/TX
RF control
V180
Baseband
controller
and
Power
management
USIF1/
GPIO
FST_SHDWN
ASC1/GPIO/
SPI
USIF3