General
IRD (I2C Register Description) stands for a technology which introduces an entirely new level of device access.
Instead of working with addresses, offsets and byte values the user is provided with a comprehensive view of device registers which are given by the names used in the data sheets.
Mapping between such names and the physical locations within a device are done automatically by I2C Studio.
The mapping is device-dependent. It gets described by IRD files.
Concept
Let's assume as an example a bus where a Smart Battery IC has the address 0x0b.
As described in the standard a Smart Battery has got a "Battery Mode" register at
subaddress 0x03.
- Smart Battery Data Sheet
When an I2C master reads data from this register, a standard I2C tracer would simply display the transferred raw data. This is not really helpful, because the developer has to use the data sheet to understand the meaning of the transfer.
- Raw View
Using the IRD description of the Smart Battery protocol the tracer can convert the raw data stream into a register view.
The register view displays, which data have been transferred to or from a register.
- Register View
Using the register view the developer still needs the data sheet to understand the meaning of the bits in the transferred data.
The value view allows the developer to work completely without the data sheet. In this view every bit gets displayed with its name and meaning.
- Value View
Thus, no deeper knowledge about the register locations and the content of the registers is needed to efficiently debug and enhance applications.
Live View
- Live View
I2C Studio's Live View keeps you up-to-date, information is shown in a textual way and highlighted on changes:
IRD Composer
I2C Studio comes with a large collection of IRD files for all common I2C devices. However, there will be always I2C devices for which there are no ready-to-use IRD files.
In such a situation the user has two possibilities for writing his own IRD files: he can write the IRD files, which are in fact XML files, by hand using the IRD User Manual and a text editor. Or he can use the IRD Composer to create the IRD files.
IRD Compiler
Using the IRD compiler it is possible to convert an IRD file to a C# source code file. Such a source code file contains one class, which offers a type-safe access to the registers/values of a device via the I2C bus.
Using such a class communicating with an I2C slave from a script or your own .NET program becomes a lot of easier. It is no longer necessary to calculate the data bytes to be sent to the I2C slave from its data-sheet. Instead, the developer can simply assign the needed value to a property of the created class.
IRD supported ICs
Manufacturer | Name | Description |
|---|---|---|
Analog Devices | AD 7291 | 8-Channel, I2C, 12-Bit SAR ADC with Temperature Sensor |
Analog Devices | AD 7414 | ±0.5°C Accurate, 10-Bit Digital Temperature Sensors in SOT-23 |
Analog Devices | AD 7415 | ±0.5°C Accurate, 10-Bit Digital Temperature Sensors in SOT-23 |
Analog Devices | AD 7416 | 10-Bit Digital Temperature Sensor |
Analog Devices | AD 7417 | 10-Bit Digital Temperature Sensor And Four Single-Channel ADCs |
Analog Devices | AD 7418 | 10-Bit Digital Temperature Sensor And Four Single-Channel ADCs |
Analog Devices | AD 7879 - 1 / AD 7889 - 1 | Low Voltage Controller for Touch Screens |
Analog Devices | ADM 1021 A | Temperature Monitor |
Analog Devices | ADM 1022 | Temperature Monitor and Fan Controller |
Analog Devices | ADM 1023 | High Accuracy Temperature Monitor |
Analog Devices | ADM 1024 | Hardware Monitor |
Analog Devices | ADM 1025(A) | Hardware Monitor |
Analog Devices | ADM 1027 | dbCOOL Remote Thermal Controller And Voltage Monitor |
Analog Devices | ADM 1028 | Remote Thermal Diode Monitor With Linear Fan Control |
Analog Devices | ADM 1029 | Dual PWM Fan Controller And Temperature Monitor For High Availability Systems |
Analog Devices | ADM 1033 | Thermal Monitor And Fan Speed Controller |
Analog Devices | ADP 5501 | Programmable Current Backlight Driver with Ambient Light Sensor Input |
Analog Devices | ADP 5520 | Backlight Driver with I/O Expander |
Analog Devices | ADP 5585 | Keypad Decoder and I/O Expansion |
Analog Devices | ADP 5587 | Mobile I/O Expander and QWERTY Keypad Controller |
Analog Devices | ADP 5588 | Mobile I/O Expander and QWERTY Keypad Controller |
Analog Devices | ADP 5589 | Keypad Decoder and I/O Expansion |
Analog Devices | ADP 8870 | Charge-Pump, Parallel Backlight Driver with Image Content PWM Input |
Analog Devices | ADT 7408 | ±2°C Accurate, 12-Bit Digital Temperature Sensor |
Analog Devices | ADT 7410 | ±0.5°C Accurate, 16-Bit Digital Temperature Sensor |
Analog Devices | ADT 7411 | 10-Bit Digital Temperature Sensor and 8-Channel ADC |
Analog Devices | ADT 7420 | ±0.25°C Accurate, 16-Bit Digital Temperature Sensor |
Analog Devices | ADT 75 | ±1°C Accurate, 12-Bit Digital Temperature Sensor |
Analog Devices | ADT 7516 | Temperature Sensor, 4-Channel ADC and Quad Voltage Output |
Analog Devices | ADT 7517 | Temperature Sensor, 4-Channel ADC and Quad Voltage Output |
Analog Devices | ADT 7518 | Temperature Sensor, 4-Channel ADC And Quad Voltage Output DAC |
Analog Devices | ADT 7519 | Temperature Sensor, 4-Channel ADC and Quad Voltage Output |
Analog Devices | ADXL 312 | 3-Axis, ±1.5 g/±3 g/±6 g/±12 g Digital Accelerometer |
Analog Devices | ADXL 343 | 3-Axis ±2 g/±4 g/±8 g/±16 g Digital MEMS Accelerometer |
Analog Devices | ADXL 345 | 3-Axis ±2 g/±4 g/±8 g/±16 g Digital Accelerometer |
Analog Devices | ADXL 346 | 3-Axis ±2 g/±4 g/±8 g/±16 g Ultralow Power Digital Accelerometer |
Freescale Semiconductor | MMA 7455L | ±2g/±4g/±8g Three Axis Low-G Digital Output Accelerometer |
JEDEC | No. 21-C Page 4.7 | Mobile Platform Memory Module Thermal Sensor Component (Release 15) |
Linear Technology | LTC 2637-10 | Octal 10-Bit I2C VOUT DACs with 10ppm/°C Reference |
Linear Technology | LTC 2637-12 | Octal 12-Bit I2C VOUT DACs with 10ppm/°C Reference |
Linear Technology | LTC 2637-8 | Octal 8-Bit I2C VOUT DACs with 10ppm/°C Reference |
Linear Technology | LTC 3447 | Controllable Buck Regulator |
Linear Technology | LTC 4151 | High Voltage I2C Current and Voltage Monitor |
Maxim | DS 1307 | Real-Time Clock |
Maxim | DS 1337 | Serial Real Time Clock |
Maxim | DS 1338 | Real-Time Clock |
Maxim | DS 1339 | Serial Real Time Clock |
Maxim | DS 1340 | RTC With Trickle Charger |
Maxim | DS 1371 | 32 Bit Binary Counter Watchdog Clock |
Maxim | DS 1374 | 32 Bit Binary Counter Watchdog RTC With Trickle Charger |
Maxim | DS 1375 | Digital Input RTC With Alarm |
Maxim | DS 1388(RTC) | RTC/Supervisor With Trickle Charger |
Maxim | DS 1388(EEPROM Bank 1) | RTC/Supervisor EEPROM Bank 1 |
Maxim | DS 1388(EEPROM Bank 2) | RTC/Supervisor EEPROM Bank 2 |
Maxim | DS 1631 (A) / DS 1731 | High-Precision Digital Thermometer And Thermostat |
Maxim | DS 1672 | Low Voltage Serial Timekeeping Chip |
Maxim | DS 1678 | Real Time Event Recorder |
Maxim | DS 1682 | Total Elapse Time Recorder With Alarm |
Maxim | DS 1721 | Digital Thermometer And Thermostat |
Maxim | DS 1775 | Digital Thermometer And Thermostat |
Maxim | DS 28CM00 | I2C/SMBus Silicon Serial Number |
Maxim | DS 3231 | Extremly Accurate RTC With TCXO |
Maxim | DS 75 | Digital Thermometer And Thermostat |
Maxim | MAX 1617 A | Remote/Local Temperature Sensor |
Maxim | MAX 1619 | Remote/Local Temperature Sensor With Dual-Alarm Outputs |
Maxim | MAX 16805 | EEPROM-Programmable, High-Voltage, 350mA LED Drivers with LED Current Foldback |
Maxim | MAX 16806 | EEPROM-Programmable, High-Voltage, 350mA LED Drivers with LED Current Foldback |
Maxim | MAX 6625 | 9 Bit Temperature Sensor |
Maxim | MAX 6626 | 12 Bit Temperature Sensor |
Maxim | MAX 6633 | 12 Bit Plus Sign Temperature Sensor |
Maxim | MAX 6634 | 12 Bit Plus Sign Temperature Sensor |
Maxim | MAX 6635 | 12 Bit Plus Sign Temperature Sensor |
Maxim | MAX 6646 | Precision Remote/Local Sensor With Overtemperature Alarms |
Maxim | MAX 6647 | Precision Remote/Local Sensor With Overtemperature Alarms |
Maxim | MAX 6649 | Precision Remote/Local Sensor With Overtemperature Alarms |
Maxim | MAX 6660 | Remote-Junction Temperature-Controlled Fan-Speed Regulator |
Maxim | MAX 6680 / MAX 6681 | 1°C Fail-Safe Remote/Local Temperature Sensor |
Maxim | MAX 6690 | 2°C Accurate Remote/Local Temperature Sensor |
Maxim | MAX 6900 | RTC In A TDFN |
Maxim | MAX 6909 / 6910 | RTC With uP Supervisor And NV RAM Controller |
Maxim | MAX 6917 | RTC With Microprocessor Supervisor And NV RAM Controller |
National Semiconductor | LM 48821 | Direct Coupled, Ultra Low Noise, 52mW Differential Input Stereo Headphone Amplifier with I2C Volume Control |
National Semiconductor | LM 48823 | Mono, Bridge-Tied Load, Ceramic Speaker Driver with I2C Volume Control and Reset |
National Semiconductor | LM 48824 | Class G Headphone Amplifier with I2C Volume Control |
National Semiconductor | LM 49350 | High Performance Audio Codec Sub-System with a Ground-Referenced Stereo Headphone Amplifier & an Ultra Low EMI Class D Loudspeaker Amplifier with Dual I2S/PCM Digital Audio Interfaces |
National Semiconductor | LM 49450 | I2S Input, 2.5W/Channel, Low EMI, Stereo, Class D Audio Sub-System with Ground Referenced Headphone Amplifier, 3D Enhancement, and Headphone Sense |
National Semiconductor | LM 63 | Accurate Remote Diode Digital Temperature Sensor |
National Semiconductor | LM 64 | Remote Diode Temperature Sensor with PWM Fan Control and 5 GPIO's |
National Semiconductor | LM 73 | 11-To-14 Bit Digital Temperature Sensor With 2-Wire Interface |
National Semiconductor | LM 75 | Digital Temperature Sensor and Thermal Watchdog with Two-Wire Interface |
National Semiconductor | LM 76 | ±0.5°C, ±1°C, 12-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface |
National Semiconductor | LM 77 | 9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface |
National Semiconductor | LM 82 | Remote-Diode And Local Digital Temperature Sensor |
National Semiconductor | LM 83 | Triple-Diode Input And Local Digital Temperature Sensor |
National Semiconductor | LM 84 | Diode Input Digital Temperature Sensor |
National Semiconductor | LM 85 | Hardware Monitor with Integrated Fan Control |
National Semiconductor | LM 86 | ±0.75°C Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface |
National Semiconductor | LM 87 | Serial Interface System Hardware Monitor with Remote Diode Temperature Sensing |
National Semiconductor | LM 89 | ±0.75°C Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface |
National Semiconductor | LM 92 | ±0.33°C Accurate, 12-Bit + Sign Temperature Sensor and Thermal Window Comparator with Two-Wire Interface |
National Semiconductor | LM 95213 | 2-Diode Input and Local Digital Temperature Sensor with Two-Wire Interface and TCRIT Outputs |
National Semiconductor | LM 95214 | Quad Remote Diode and Local Temperature Sensor with SMBus Interface |
National Semiconductor | LM 95221 | Dual Remote Diode Digital Temperature Sensor with SMBus Interface |
National Semiconductor | LM 95231 | Precision Dual Remote Diode Temperature Sensor with SMBus Interface and TruThermâ„¢ Technology |
National Semiconductor | LM 95233 | Dual Remote Diode and Local Temperature Sensor with SMBus Interface and TruThermâ„¢ Technology |
National Semiconductor | LM 95234 | Quad Remote Diode and Local Temperature Sensor with SMBus Interface and TruThermâ„¢ Technology |
National Semiconductor | LM 95235 | Precision Remote Diode Temperature Sensor with SMBus Interface and TruThermâ„¢ Technology |
National Semiconductor | LM 95241 | Dual Remote Diode Temperature Sensor with SMBus Interface and TruThermâ„¢ Technology (65nm/90nm) |
National Semiconductor | LM 95245 | Precision Remote Diode Digital Temperature Sensor with TruTherm BJT Beta Compensation Technology for 45nm Process |
National Semiconductor | LM 99 | ±1°C Accurate, High Temperature, Remote Diode Temperature Sensor with Two-Wire Interface |
National Semiconductor | LMV 1088 | Dual Input, Far Field Noise Suppression Microphone Amplifier with Automatic Calibration Ability |
National Semiconductor | LMV 1089 | Dual Input, Far Field Noise Suppression Microphone Amplifier with Automatic Calibration Capability |
NXP Semiconductors | PCA 9502 | 8-Bit I/O Expander With I2C-Bus/SPI Interface |
NXP Semiconductors | PCA 9505 / 9506 | 40-Bit I2C-Bus I/O Port With RESET, OE And INT |
NXP Semiconductors | PCA 9530 | 2-Bit I2C LED Dimmer |
NXP Semiconductors | PCA 9531 | 8-Bit I2C-Bus LED Dimmer |
NXP Semiconductors | PCA 9532 | 16-Bit I2C LED Dimmer |
NXP Semiconductors | PCA 9533 | 4-Bit I2C LED Dimmer |
NXP Semiconductors | PCA 9534 | 8-Bit I2C-Bus And SMBus Low Power I/O Port With Interrupt |
NXP Semiconductors | PCA 9535 | 16-Bit I2C-Bus And SMBus, Low Power I/O Port With Interrupt |
NXP Semiconductors | PCA 9536 | 4-Bit I2C-Bus And SMBus I/O Port |
NXP Semiconductors | PCA 9537 | 4-Bit I2C-Bus And SMBus Low Power I/O Port With Interrupt And Reset |
NXP Semiconductors | PCA 9538 | 8-Bit I2C-Bus And SMBus Low Power I/O Port With Interrupt And Reset |
NXP Semiconductors | PCA 9539 | 16-Bit I2C-Bus And SMBus Low Power I/O Port With Interrupt And Reset |
NXP Semiconductors | PCA 9540 B | 2-Channel I2C Multiplexer |
NXP Semiconductors | PCA 9542 A | 2-Channel I2C Multiplexer And Interrupt Logic |
NXP Semiconductors | PCA 9543 A | 2-Channel I2C-Bus Switch With Interrupt Logic And Reset |
NXP Semiconductors | PCA 9543 C | 2-Channel I2C-Bus Switch With Interrupt Logic And Reset |
NXP Semiconductors | PCA 9544 A | 4-Channel I2C Multiplexer With Interrupt Logic |
NXP Semiconductors | PCA 9545 A | 4-Channel I2C-Bus Switch With Interrupt Logic And Reset |
NXP Semiconductors | PCA 9545 A | 4-Channel I2C-Bus Switch With Interrupt Logic And Reset |
NXP Semiconductors | PCA 9545 C | 4-Channel I2C-Bus Switch With Interrupt Logic And Reset |
NXP Semiconductors | PCA 9546 A | 4-Channel I2C-Bus Switch With Reset |
NXP Semiconductors | PCA 9547 | 8-Channel I2C-Bus Multiplexer With Reset |
NXP Semiconductors | PCA 9548 A | 8-Channel I2C-Bus Switch With Reset |
NXP Semiconductors | PCA 9549 | Octal Bus Switch With Individually I2C-Bus Controlled Enables |
NXP Semiconductors | PCA 9550 | 2-Bit I2C-Bus LED Driver With Programmable Blink Rates |
NXP Semiconductors | PCA 9551 | 8-Bit I2C-Bus LED Driver With Programmable Blink Rates |
NXP Semiconductors | PCA 9552 | 16-Bit I2C-Bus LED Driver With Programmable Blink Rates |
NXP Semiconductors | PCA 9698 | 40-Bit Fm+ I2C-Bus Advanced I/O Port With RESET, OE And INT |
NXP Semiconductors | SAA 7118 | Multistandard video decoder with adaptive comb filter and component video input |
NXP Semiconductors | SAA 7119 | Multistandard video decoder with adaptive comb filter and component video input |
NXP Semiconductors | TDA 10046 AHT | Single chip channel receiver for 2K and 8K COFDM modulated signals |
SBS Forum | Smart Battery Data | Smart Battery Data - Revision 1.1 |
SBS Forum | Smart Battery Charger | Smart Battery Charger - Revision 1.1 |
SBS Forum | Smart Battery Manager | Smart Battery Manager - Revision 1.0 |
SMI Forum | PMBus 1.2 | PMBus 1.2 - Power System Management Protocol |
SBS Forum | Smart Battery Selector | Smart Battery Selector - Revision 1.1 |
SBS Forum | SMBus ARP | SMBus 2.0 - Address Resolution Protocol |
ST | LIS 331 HH | MEMS Digital Output Motion Sensor Ultra Low-Power High Full-Scale 3-Axes "Nano" Accelerometer |
ST | STMPE 1208S | S-Touch 12-Channel CapacitiveTouchkey Controller |
ST | STMPE 321 | 3-Channel Capacitive Touchkey Controller |
ST | STMPE 610 | S-Touch: Advanced Touchscreen Controller With 6-Bit Port Expander |
ST | STMPE 811 | Advanced Resistive Touch Screen Controller With 8-bit GPIO Expander |
ST | STMPE 821 | 8-Channel Capacitive Touch Key Controller |
Texas Instruments | AMC 6821 | Intelligent Temperature Monitor And PWM Fan Controller |
Texas Instruments | PCA 9534 | Remote 8-Bit I2C And SMBus Low-Power I/O Expander With Interrupt Output And Configuration Registers |
Texas Instruments | PCA 9535 | Remote 16-Bit I2C And SMBus, Low-Power I/O Expander With Interrupt Output And Configuration Registers |
Texas Instruments | PCA 9536 | Remote 4-Bit I2C And SMBus I/O Expander With Configuration Registers |
Texas Instruments | PCA 9539 | Remote 16-Bit I2C And SMBus Low-Power I/O Expander With Interrupt Output, Reset And Configuration Registers |
Texas Instruments | PCA 9543 A | Two-Channel I2C-SMBus Switch With Interrupt Logic and Reset |
Texas Instruments | PCA 9545 A | 4-Channel I2C And SMBus Switch With Interrupt Logic And Reset Functions |
Texas Instruments | PCA 9546 A | 4-Channel I2C And SMBus Switch With Reset Function |
Texas Instruments | PCA 9554 A | Remote 8-Bit I2C And SMBus I/O Expander With Interrupt Output And Configuration Registers |
Texas Instruments | PCA 9555 | Remote 16-Bit I2C And SMBus I/O Expander With Interrupt Output And Configuration Registers |
Texas Instruments | PCA 9557 | Remote 8-Bit I2C And SMBus I/O Expander With Reset And Configuration Registers |
Texas Instruments | TCA 6408 | Low-Voltage 8-Bit I2C And SMBus I/O Expander With Interrupt Output, Reset, And Configuration Registers |
Texas Instruments | TCA 6416 | Low-Voltage 16-Bit I2C And SMBus I/O Expander With Interrupt Output, Reset, And Configuration Registers |
Texas Instruments | TCA 6424 | Low-Voltage 24-Bit I2C And SMBus I/O Expander With Interrupt Output, Reset, And Configuration Registers |
Texas Instruments | TCA 6507 | Low-Voltage 7-Bit I2C And SMBus LED Driver With Intensity Control And Shutdown |
Texas Instruments | TMP 100 | Digital Temperature Sensor |
Texas Instruments | TMP 101 | Digital Temperature Sensor |
Texas Instruments | TMP 105 | Digital Temperature Sensor |
Texas Instruments | TMP 106 | Digital Temperature Sensor |
Texas Instruments | TMP 112 | High-Accuracy, Low-Power, Digital Temperature Sensor |
Texas Instruments | TMP 175 | Digital Temperature Sensor |
Texas Instruments | TMP 275 | 0.5°C Digital Out Temperature Sensor |
Texas Instruments | TMP 400 | ±1°C Remote and Local Temperature Sensor with N-Factor and Series Resistance Correction |
Texas Instruments | TMP 401 | ±1°C Programmable, Remote/Local, Digital Out Temperature Sensor |
Texas Instruments | TMP 421 | ±1°C Remote and Local Temperature Sensor |
Texas Instruments | TMP 422 | ±1°C Remote and Local Temperature Sensor |
Texas Instruments | TMP 423 | ±1°C Remote and Local Temperature Sensor |
Texas Instruments | TMP 431 | ±1°C Temperature Sensor with Series-R, η-Factor, and Automatic Beta Compensation |
Texas Instruments | TMP 432 | ±1°C Temperature Sensor with Series-R, η-Factor, and Automatic Beta Compensation |
Texas Instruments | TMP 75 | Digital Temperature Sensor |