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1. Features

• USB interface

• USB V1.1/2.0 full speed device

• 50, 100, or 400 kHz I2C (IIC / TWI) master

• SPI master up to 8 MBit/sec

• Throughput up to 60 kbyte/s

• Based on IO-Warrior56

• Supports clock stretching on I2C

• Multi master capable I2C

• 5 V and 3.3 V available for external circuit

• Uses standard system drivers

• Standard form factor, no blocked ports

• Extended temperature: -10 to +85°C

1.1 Variants

The standard IOW56-DG is shipped as a kit

containing an assembled and tested PCB, a two

part dongle case, and a ten wire cable to solder to

the dongle as required for the target application.

1.2 Custom variants

OEM versions with specialized cables or custom

modifications are possible

2. Functional overview

IOW56-DG packages a standard IO-Warrior56 in a

small form factor dongle case with a 3.3 V voltage

regulator.

The SPI and I2C signals of the IO-Warrior56 are

made available externally through solder pads to

allow application specific cabling to be attached.

All software and tools for IO-Warrior56 are also

usable for the dongle.

The I2C interface works as a bus master, supports

clock stretching handshake and multi master

configurations.

SPI works as a master with clock rates up to 8

MHz (cable length may be critical at higher clock

rates).

For compatibility with low voltage slaves the

internal pull up resistors of IOW56 can be

switched off by software command. Pull up control

is independent for SPI and I2C.

3. Connecting the cable

The function of the signals is marked on the board

next to the solder pads for the cable:

SS SPI - Slave Select, active low

+5 5V from USB, max. 100 mA

MOSI SPI - Master Out Slave In

RDY SPI - /DRDY

SCK SPI - Serial clock

MISO SPI - Master In Slave Out

GND Ground

SDA I2C SDA signal

SCL I2C SCL signal

3.3 3.3V output, max. 50 mA

Solder the cable to the pads as required for your

application.

The 5 V and 3.3 V supplies are meant to be used

exclusive of each other. If both are used at the

same time the combined current may not exceed

100 mA.

Dongle shown from both sides.

V1.0.1 October 6th 2012

USB to SPI and I2C Dongle

based on IO-Warrior56

Summary of content (28 pages)

PAGE 1
IOW56-DG USB to SPI and I2C Dongle based on IO-Warrior56 Code Mercenaries 1. Features • USB interface • USB V1.1/2.0 full speed device • 50, 100, or 400 kHz I2C (IIC / TWI) master • SPI master up to 8 MBit/sec • Throughput up to 60 kbyte/s • Based on IO-Warrior56 • Supports clock stretching on I2C • Multi master capable I2C • 5 V and 3.3 V available for external circuit • Uses standard system drivers • Standard form factor, no blocked ports • Extended temperature: -10 to +85°C 3.
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Code Mercenaries IOW56-DG 3.1 Compatibility with 3.3 V slaves If a 3.3 V slave is to be connected the internal pull up resistors of the IOW56 should be switched off by software on enabling the I2C or SPI function. This requires external pull up resistors which may be added either on the slave side or soldered to the lower side of the dongle PCB. It is recommended to add protection diodes so the slave does not get exposed to 5 V on the signal lines before the SPI or I2C function of the IOW56 is initialized.
PAGE 3
IO-Warrior56 Generic universal I/O Controller for USB Code Mercenaries 1. Features • Full speed USB interface (12MBit/sec) • Full USB V2.0 compliant full speed device • Full USB HID 1.
PAGE 4
IO-Warrior56 Code Mercenaries 2.1 Product selection matrix Type IO-Warrior40 IO-Warrior24 IO-Warrior56 USB Speed I/O Pins LCD IIC low 32 low 16 full 50 SPI RC5 IR Keys LEDs Timer SSOP48 DIL24 SOIC24 MLFP56 Module 8x16 8x32 8x32 8x8 8x64 2.2 Starter Kits With the IO-Warrior Starter Kits you can make your first steps with IO-Warrior 56. A few elements on the kit allow first experiments with inputs and outputs, the bread board area provides space to test your individual circuit.
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Code Mercenaries IO-Warrior56 3.0 Pin Configurations P2.5 P2.7 P0.1 P0.3 P0.5 P0.7 Gnd Vcc P0.6 P0.4 P0.2 P0.0 P2.6 P2.4 56 55 54 53 52 51 50 49 48 47 46 45 44 43 IO-Warrior56-LFXI MLFP56 Package P3.5 8 35 P3.4 P3.3 9 34 P3.2 P3.1 10 33 P3.0 P5.7 11 32 P5.6 P5.5 12 31 P5.4 P5.3 13 30 P5.2 P5.1 14 29 P5.0 28 P3.6 P1.6 36 27 7 P1.4 P3.7 26 P4.0 P1.2 37 25 6 P1.0 P4.1 24 P4.2 P6.0 38 23 5 P6.7 P4.3 22 P4.
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Code Mercenaries IO-Warrior56 IO-Warrior56-MOD Module Pin numbers 5 6 56 55 7 8 4 3 2 1 54 53 9 10 52 51 11 12 50 49 13 14 48 47 15 16 46 45 17 18 44 43 19 20 42 41 21 22 40 39 23 24 38 37 25 26 36 35 27 28 34 33 29 30 32 31 All drawings: TOP VIEW! V 1.0.3, November 6nd 2012 for chip version V1.1.0.
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Code Mercenaries IO-Warrior56 IO-Warrior56-MOD Module P6.7 Vcc D- D+ Gnd P1.3 Pin names P1.5 P6.0 P5.1 P1.7 P1.0 P1.1 P5.5 P5.3 P1.2 P1.4 P3.1 P5.7 P1.6 P5.0 P3.5 P3.3 P5.2 P5.4 P4.1 P3.7 P5.6 P3.0 P4.5 P4.3 P3.2 P3.4 P2.1 P4.7 P3.6 P4.0 P2.5 P2.3 P4.2 P4.4 P0.1 P2.7 P4.6 P2.0 P0.5 P0.3 P2.2 P2.4 P0.6 P0.7 P2.6 P0.0 NC NC P0.2 P0.4 All drawings: TOP VIEW! V 1.0.3, November 6nd 2012 for chip version V1.1.0.
PAGE 8
IO-Warrior56 Code Mercenaries 4.
PAGE 9
IO-Warrior56 4.1 Pin descriptions D+, DDifferential data lines of USB. Put 24 series resistors in these lines and connect them to the USB cable or plug, see application circuit for details. The IOW56-MOD already has the series resistors. For a PCB layout make sure to run these two signals next to each other. USB data is a differential signal that produces best signal quality and lowest RF emission if the two lines are close to each other. P0.0..P0.7 First I/O port of the chip.
PAGE 10
IO-Warrior56 4.2.2 LCD Mode pins IO-Warrior56 has support for controlling LCD modules with a wide range of controllers. Refer to Application Note 5: "Controlling LCDs with IOWarrior" for more information on compatible modules and how to use them. The following pins get reassigned when the LCD function is enabled: Function IOW56 /On P4.0 RS P4.1 R/W/WE P4.2 E/RE P4.3 E2/RES P4.4 Data0 P3.0 Data1 P3.1 Data2 P3.2 Data3 P3.3 Data4 P3.4 Data5 P3.5 Data6 P3.6 Data7 P3.
PAGE 11
IO-Warrior56 Code Mercenaries 4.2.5 Switch Matrix Mode Pins IO-Warrior56 supports scanning of a 8x8 matrix of keys or switches. When this function is enabled P0.0..7 will turn off their internal pull up resistors and will be used as the Y lines that are periodically driven to Gnd voltage level. P2.0..7 will serve as the X matrix inputs, they will keep their internal pull up resistors active so a closed switch in the matrix will pull down the X line when the corresponding Y line is driven low.
PAGE 12
IO-Warrior56 5.Device Operation Due to the fact that all current operating systems offer an especially easy access to devices in the HID class, IO-Warrior was designed as a generic HID device. By identifying as a generic HID class device IOWarrior avoids being controlled by any of the higher level system drivers, which makes it possible to access IO-Warrior from application level. 5.1 Accessing IO-Warrior A common misconception with USB is to think you can "talk to the USB port".
PAGE 13
IO-Warrior56 5.6 Power supply USB does allow a device to be "Bus Powered". This means the device does get its power off the USB port. To avoid overloading on the USB ports devices need to advertise their power requirements. There are two power classes for devices: Low power and high power. Low power devices may draw up to 100mA off the USB, high power devices up to 500mA. Likewise there are high power and low power ports.
PAGE 14
IO-Warrior56 5.10.1 IIC Special mode function The IIC function is enabled and disabled by sending a report with the following structure with ReportID=1 to interface 1: ReportID 1 2 3 4 ... 62 63 $01 out enable flags $00 $00 $00 $00 $00 enable=$01 enables the IIC function, $00 disables it. Other values are reserved for future use. Upon enabling IIC the SDA and SCL pins are pulled high and are no longer under control of interface 0.
PAGE 15
IO-Warrior56 Reading data off the IIC is initiated with a ReportID=3. The initiating report has the following format: ReportID 1 2 3 4 ... 62 63 $03 out count command $00 $00 $00 $00 $00 Code Mercenaries Arbitration Loss is detected. This happens when IO-Warrior56 is driving a logical high on SDA but reads a low. When that happens IO-Warrior56 will immediately stop driving SDA but continues to drive SCK until the end of the current byte and then returns an Arb Loss error.
PAGE 16
IO-Warrior56 5.10.2 LCD Special mode function The LCD special mode function supports a wide range of alphanumeric and graphic LCD modules. The LCD function is enabled by sending an output report with ID 4 to the USB interface 1: ReportID 1 2 3 4 ... 62 63 $04 out enable mode $00 $00 $00 $00 $00 enable = $00 disables the LCD function. enable = $01 enables the LCD function, values are reserved.
PAGE 17
IO-Warrior56 To read data from the LCD module an output report with ID 6 is sent to interface 1: ReportID 1 2 3 4 ... 62 63 $06 out flags $00 $00 $00 $00 $00 $00 Code Mercenaries Following is a list of the LCD controllers that have by now been tested with IOW56 and the mode byte that is used for them. Additional chip types will be added when tested.
PAGE 18
IO-Warrior56 5.10.3 SPI Special mode function IO-Warrior56 has a hardware SPI interface enabling it to talk to many peripheral devices. IOW56 supports SPI master mode. To enable the SPI function a report with ID 8 is sent to interface1: ReportID 1 2 3 4 ... 62 63 $08 out enable mode clock flags $00 $00 $00 "enable" = $00 disables the SPI and $01 enables it.
PAGE 19
IO-Warrior56 5.10.3.1 SPI CPHA / CPOL If CPOL and CPHA are = 0 data is driven on the falling edges of SCK (green lines) and sampled on the rising edges (blue lines). The first bit is driven before the first rising edge on SCK. Code Mercenaries For CPOL = 1 and CPHA = 1data is driven on the falling edges of SCK (blue lines) and sampled on the rising edges (green lines). The first bit is driven on the on the first falling edge of SCK.
PAGE 20
IO-Warrior56 5.10.4 Driving a LED matrix IO-Warrior56 has the capability to drive a matrix of up to 8x64 LEDs with the aid of a few simple external driver chips. To enable the reciever function a report with ID $14 is sent to interface 1: ReportID 1 2 3 4 ... 62 63 $14 out enable $00 $00 $00 $00 $00 $00 enable = $01 enables the LED function, enable = $00 disables it again. Data to be displayed in the matrix is written in two blocks of 32 bytes: ReportID 1 2 ... 33 34 ...
PAGE 21
Code Mercenaries IO-Warrior56 6. Absolute Maximum Ratings Storage Temperature ........................................................................................-55°C to +100°C Ambient Temperature with power applied.........................................................-40°C to +85°C Ambient Temperature using USB ......................................................................-10°C to +85°C Supply voltage on Vcc relative to Gnd .................................................................
PAGE 22
IO-Warrior56 Code Mercenaries 7. Ordering information Partname IO-Warrior56 IO-Warrior56 Order Code IOW56-LFXI IOW56-MOD Description IO-Warrior 50 I/O pins IO-Warrior 50 I/O pins The chips listed here are standard products. Customized chips are available on request. 7.1 Packaging info MLFP56 chips are packaged in trays with 250 chips each. Only complete trays are available due to mechanical handling as well as moisture sensitivity of the package. IOW56-LFXI has MSL 3.
PAGE 23
Code Mercenaries IO-Warrior56 8. IO-Warrior56 basic circuit(MLFP56 package) USB 1 +5V 2 D3 D+ 4 GND C1 100nF C2 100nF R1 24 R2 24 Vcc Vcc 21 20 DD+ IO-Warrior 56-LFXI R3 100K 24 23 P6.0 P6.7 29 14 30 13 31 12 32 11 37 6 38 5 39 4 40 3 P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 P5.0 P5.1 P5.2 P5.3 P5.4 P5.5 P5.6 P5.7 P2.0 P2.1 P2.2 P2.3 P2.4 P2.5 P2.6 P2.7 P4.0 P4.1 P4.2 P4.3 P4.4 P4.5 P4.6 P4.7 P3.0 P3.1 P3.2 P3.3 P3.4 P3.5 P3.6 P3.7 GND V 1.0.
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Code Mercenaries IO-Warrior56 8.1 IO-Warrior56 Starterkit Circuit R2 C1 USB Vcc 470 10 F D1 1 +5V 2 D3 D+ 4 GND 2 3 DD+ J2 IO-Warrior 56-MOD J1 R1 100K S1 55 56 P6.0 P6.7 49 7 48 10 47 9 46 12 41 15 40 18 39 17 38 20 P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 P5.0 P5.1 P5.2 P5.3 P5.4 P5.5 P5.6 P5.7 P2.0 P2.1 P2.2 P2.3 P2.4 P2.5 P2.6 P2.7 P4.0 P4.1 P4.2 P4.3 P4.4 P4.5 P4.6 P4.7 P3.0 P3.1 P3.2 P3.3 P3.4 P3.5 P3.6 P3.
PAGE 25
IO-Warrior56 Code Mercenaries 9. Package Dimensions Module The module contains the bypass capacitors as well as the USB series resistors. V 1.0.3, November 6nd 2012 for chip version V1.1.0.
PAGE 26
IO-Warrior56 Code Mercenaries 9.1 Package Dimensions QFN 56 (Drawing from Cypress data sheet) Center pad must be soldered to ground V 1.0.3, November 6nd 2012 for chip version V1.1.0.
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IO-Warrior56 Code Mercenaries 10. ESD Considerations IO-Warrior56 has an internal ESD protection to withstand discharges of more than 2000V without permanent damage. However ESD may disrupt normal operation of the chip and cause it to exhibit erratic behaviour. For the typical office environment the 2000V protection is normally sufficient. Though for industrial use additional measures may be necessary. When adding ESD protection to the signals special care must be taken on the USB signal lines.
PAGE 28
IO-Warrior56 Legal Stuff This document Mercenaries. is ©1999-2012 by Code Mercenaries Code The information contained herein is subject to change without notice. Code Mercenaries makes no claims as to the completeness or correctness of the information contained in this document. Code Mercenaries assumes no responsibility for the use of any circuitry other than circuitry embodied in a Code Mercenaries product. Nor does it convey or imply any license under patent or other rights.