User's Manual
Table Of Contents
- Contents
- Tables
- Figures
- 1 Introduction
- 2 Interface Characteristics
- 2.1 Application Interface
- 2.1.1 Pad Assignment
- 2.1.2 Signal Properties
- 2.1.3 USB Interface
- 2.1.4 Serial Interface ASC0
- 2.1.5 Serial Interface ASC1
- 2.1.6 UICC/SIM/USIM Interface
- 2.1.7 Digital Audio Interface
- 2.1.8 Pulse Code Modulation Interface (PCM)
- 2.1.9 Inter IC Sound Interface (I2S)
- 2.1.10 GPIO Interface
- 2.1.11 I2C Interface
- 2.1.12 SPI Interface
- 2.1.13 Pulse Counter
- 2.1.14 HSIC Interface (ELS51-VA Only)
- 2.1.15 SDIO Interface (ELS51-VA Only)
- 2.1.16 Control Signals
- 2.2 RF Antenna Interface
- 2.3 Sample Application
- 2.1 Application Interface
- 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
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ELS31-VA/ELS51-VA Hardware Interface Description
2.1 Application Interface
56
ELS31-VA_ELS51-VA_HID_v01.000 2017-01-04
Confidential / Preliminary
Page 39 of 106
2.1.13 Pulse Counter
The GPIO8 line can be configured as pulse counter line COUNTER (for GPIOs see Section
2.1.10). The pulse counter interface can be used, for example, as a clock - it is designed to
measure signals from 0 to 1000 pulses per second. Note that the pulse counter works in batch-
es of 8 pulses, i.e., the URC indicates the number of pulses counted in batches of 8 pulses. For
more information on how to use this feature see [1].
2.1.14 HSIC Interface (ELS51-VA Only)
The (USB) High Speed Inter Chip (HSIC) interface can be used between the module and an
external application processor, and is compliant to the High Speed USB 2.0 interface with
480Mbit/s. The maximum distance between module processor and external application proces-
sor should not exceed 100mm.
The HSIC interface comprises two signal lines (strobe - HSIC_STRB - and data - HSIC_DATA)
used in a source synchronous serial interface with a 240MHz clock to provide a 480Mbps USB
interface. The HSIC_STRB and HSIC_DATA lines are high-speed signals and should be rout-
ed as 50Ohm impedance traces. The trace length of these signals should be balanced to min-
imize timing skew and be no longer than 100mm.
The HSIC interface implementation complies with the USB HSIC standard “High-Speed Inter-
Chip USB Electrical Specification”, Version 1, September 23, 2007
1
.
2.1.15 SDIO Interface (ELS51-VA Only)
The Secure Digital Input Output (SDIO) interface can be used to for instance connect an SD
card. The SDIO interface has the following features:
1. The USB specifications are ready for download on http://www.usb.org/developers/docs/usb20_docs/
Table 8: SDIO interface features
Feature Description/Value
Interface Type SDIO/SD1 (1 data line), SDIO/SD4 (4 data lines), MMC4 (4 data lines)
Voltage 1.8 V
DMA Mode SDMA / ADMA1 / ADMA2
Number of SLOTs 1
Implement DDR mode Yes
Card inserted status Yes
SDIOCLK frequency Default Mode: 23 MHz maximum
High Speed Mode: 46 MHz maximum
UHS-I Mode: 92 MHz
Max block length 2048 bytes
SDIO interrupt support Yes, support SDIO/SD1, SDIO/SD4 mode interrupts