CY3631

CY3631 WirelessUSB™ Manufacturing Test Kit User Guide Doc. # 001-66724 Rev. *B Cypress Semiconductor 198 Champion Court San Jose, CA 95134-1709 Phone (USA): 800.858.1810 Phone (Intnl): 408.943.2600 http://www.cypress.com Copyrights Copyrights © Cypress Semiconductor Corporation, 2011-2012. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. Any Source Code (software and/or firmware) is owned by Cypress Semiconductor Corporation (Cypress) and is protected by and subject to worldwide patent protection (United States and foreign), United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of, and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified above is prohibited without the express written permission of Cypress. Disclaimer: CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein. Cypress does not assume any liability arising out of the application or use of any product or circuit described herein. Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress’ product in a life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. Use may be limited by and subject to the applicable Cypress software license agreement. WirelessUSB is a trademark and PSoC® is a registered trademark of Cypress Semiconductor Corporation. All products and company names mentioned in this document may be the trademarks of their respective holders. Purchase of I2C components from Cypress or one of its sublicensed Associated Companies conveys a license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C Standard Specification as defined by Philips. As from October 1st, 2006 Philips Semiconductors has a new trade name - NXP Semiconductors. Flash Code Protection Cypress products meet the specifications contained in their particular Cypress PSoC Data Sheets. Cypress believes that its family of PSoC products is one of the most secure families of its kind on the market today, regardless of how they are used. There may be methods, unknown to Cypress, that can breach the code protection features. Any of these methods, to our knowledge, would be dishonest and possibly illegal. Neither Cypress nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.” Cypress is willing to work with the customer who is concerned about the integrity of their code. Code protection is constantly evolving. We at Cypress are committed to continuously improving the code protection features of our products. 2 CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B Contents 1. Introduction 1.1 1.2 1.3 1.4 Introduction ..................................................................................................................5 Kit Contents .................................................................................................................5 Document Revision History ........................................................................................6 Documentation Conventions........................................................................................6 2. Kit Operation 2.1 2.2 2.3 4.3 4.4 11 Theory of Operation...................................................................................................11 Schematic ..................................................................................................................11 4. Firmware 4.1 4.2 7 Hardware Setup...........................................................................................................7 Execute Standard Test ................................................................................................8 Calibration....................................................................................................................9 3. Hardware 3.1 3.2 5 13 Overview....................................................................................................................13 DUT Test Code ..........................................................................................................13 4.2.1 CY4672 PRoC LP RDK Bridge ......................................................................13 4.2.2 CY4672 PRoC LP RDK Mouse......................................................................14 4.2.3 CY4672 PRoC LP RDK Keyboard .................................................................14 Test Fixture Firmware ................................................................................................14 RF Protocol................................................................................................................15 5. Command Line Interface 17 5.1 Serial Command Line Interface .................................................................................17 Appendix 19 Appendix - A ........................................................................................................................19 Using the Command Line Interface ..........................................................................19 Appendix - B ........................................................................................................................22 Test Chambers .........................................................................................................22 CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B 3 Contents 4 CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B 1. 1.1 Introduction Introduction The CY3631 – WirelessUSB™ Manufacturing Test Kit (MTK) enables Cypress’s customers to test their WirelessUSB products in a manufacturing environment without the use of expensive RF test equipment. The highly integrated nature of the WirelessUSB radio device ensures that there are very few errors in the assembly process. The device is tested before it leaves the Cypress factory. There are only a few critical components on the customer’s board that affect the operation of the radio. Most of the possible assembly level failures (missing components, open/cold solder joints, and pin-to-pin shorts) cause a large reduction in transmitted power or receive sensitivity if the unit functions. A simple functionality test at maximum range eliminates most bad units. The MTK prevents testing each unit over long distance and interference between multiple units that may be on the test floor simultaneously. This is because the MTK is designed to simulate a limit-ofoperation condition using a shielded test fixture and enclosure. 1.2 Kit Contents The MTK contains the following items: ■ MTK test fixture ■ 12 SubMiniature version A (SMA) to SMA coaxial cables ■ 24 SMA to SMA coaxial cables ■ SMA-F to SMA-F adapter ■ Six fixed 50-ohm attenuators: 1 dB, 2 dB, 4 dB, 7 dB, 15 dB, and 30 dB ■ SMA 2.4-GHz antenna ■ Power supply transformer ■ CD with firmware source and documentation Figure 1-1. Manufacturing Test Contents CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B 5 Introduction 1.3 Document Revision History Table 1-1. Revision History Revision ** *A *B 1.4 PDF Creation Date 03/24/2011 11/03/2011 02/27/2012 Origin of Description of Change Change NXZ New kit guide CSAI Updated DUT test code section. ELIN No technical updates. Documentation Conventions Table 1-2. Document Conventions for Guides Convention 6 Usage Courier New Displays file locations, user entered text, and source code: C:\ ...cd\icc\ Italics Displays file names and reference documentation: Read about the sourcefile.hex file in the PSoC Designer User Guide. [Bracketed, Bold] Displays keyboard commands in procedures: [Enter] or [Ctrl] [C] File > Open Represents menu paths: File > Open > New Project Bold Displays commands, menu paths, and icon names in procedures: Click the File icon and then click Open. Times New Roman Displays an equation: 2+2=4 Text in gray boxes Describes cautions or unique functionality of the product. CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B 2. 2.1 Kit Operation Hardware Setup 1. Attach the supplied antenna to the SMA pass-through connector of the test chamber. a. Use the SMA pass-through that is furthest from the sides of the chamber if there are more than one. b. Orient the antenna at either 0 degrees or 90 degrees. It is important that you keep the same relative position and orientation of the fixed antenna and the device under test (DUT) for all tests. These can affect the signal strength. See Figure 2-1. 2. Attach one coaxial cable to the matching SMA outside the chamber. a. Make certain to connect to the same pass-through that has the antenna installed. 3. Attach the other cable to the SMA on the MTK test fixture. a. Use an appropriate SMA torque wrench on all SMA connections or tighten your finger to avoid damaging the connectors. It is important that the connections are tight enough so that proper contact is made. Loose connections can impact the repeatability of the test. 4. Place fixed or variable attenuators between the two cables. a. Determine the correct attenuation. b. If you are using the supplied fixed attenuators, use the female-to-female adapter to connect the male end of the attenuators to the cable. 5. (Optional) Attach a serial cable (not included) between the MTK test fixture and the computer. a. If a computer is used for setup or testing, attach it to the serial port with a serial cable or a USB-to-serial adapter cable (not included). b. See Appendix - A on page 19 for the default setting of the serial port on the test fixture. 6. Insert the power plug into the MTK test fixture. a. The MTK test fixture goes through a power-on self-check, which lights all of the LED indicators. After the green PASS light is lit, the test fixture is ready for use or to receive serial commands. CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B 7 Kit Operation Figure 2-1. Fixed Antenna Mounting Example Figure 2-2. Completed Installation 2.2 Standard Test The standard test is defined by sending a number of packets over one or more channels. The bit errors are counted and compared against an error threshold number and the pass/fail result is displayed. See Appendix - A on page 19 for instructions on changing the standard test configuration. After the test environment is set up, put the device to be tested into manufacturing test mode and place it in the shielded container. The DUT should respond to the standard test executed by the test fixture. Note that the foam in some shielded test boxes is conductive. The bare DUT board (if testing a bare PCB) should be placed in a fixture, not directly on the foam of the box. This also helps ensure that the DUT to antenna alignment is the same from test to test, which can make a large difference in signal strength at the DUT. See Figure 2-3. 8 CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B Kit Operation Figure 2-3. DUT Fixture Press the START button on the test fixture. The BUSY light comes on for a short time. If the test is successful, then the PASS light comes on when the test is completed. If the test exceeds the error threshold settings, the test fixture indicates test failure by lighting the FAIL light. 2.3 Calibration The test station is calibrated by using one or more known good reference devices to determine the maximum attenuation that the system can have installed before the radio loses good contact. This must be done periodically to compensate for environmental effects, and at least once any time the DUT design is changed or the test station is switched to testing a different device model. Antenna distance and orientation, to each other and to the walls of the test chamber, are important for signal attenuation. Therefore it is vital that the calibration and test procedure be run with the antenna and DUT installed in the same location and orientation every time. It is recommended that you use a test fixture, or some other means, to ensure proper placement of the DUT each time. If alignment guides are added to the chamber, they should be kept to a very low profile and they should be constructed out of a non reflecting material. One option is to cut a shallow impression in the foam at the bottom of the chamber that holds the DUT in the proper alignment. Note that the foam in some test chambers is conductive. While testing bare boards, be sure to use a fixture or some other means to insulate the board from the foam. A test fixture that holds the board in exactly the same place every time is strongly recommended. Any wires or battery packs that are placed in the chamber to power the DUT also need to be in the same location every time, as these can reflect the RF energy and change the overall attenuation of the signal. Batteries should ideally be used and placed in their final location, as they will be in the finished product. The battery position can affect the test results. If the battery is not in the finished product's position, the test works fine, as long as the batteries are in the same position each time the test is run. CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B 9 Kit Operation The initial calibration is easily done using a variable attenuator rather than the fixed attenuators provided in the kit. This is shown in Figure 2-4. If the variable attenuator used does not have sufficient range, it may be necessary to install both the variable and some fixed attenuation. The amount of fixed attenuation must be determined by trial and error. Figure 2-4. Calibration Setup The calibration begins by testing a known good DUT sample (golden DUT) with a ‘best guess’ attenuation value. Based on our experience, this is typically in the 40 dB range. The test starts, and should pass at this initial setting. If it does not, the attenuation may need to be reduced by 10 dB. If a second test with this reduced attenuation still does not pass, check all the connections to be sure that everything is connected correctly. If this still does not fix the problem, attach the antenna directly to the SMA on the MTK test fixture and test the golden DUT in free air (no chamber). If this still does not pass, make sure that the test fixture has power, press the reset button (the self-test should pass and the green LED remain lit), and make sure that the golden DUT has good batteries installed and is in MTK test mode. After a base line is established by passing the test, the attenuation is increased and the test repeated. Doing this several times, increasing the attenuation each time, eventually reaches the level where the golden DUT fails the test repeatedly at a given attenuation. There may be an intermediate attenuation value at which the test passes only sometimes. Use your discretion on how to determine the limit value. One option is to consider the test passing (for calibration only) if it passes three or more of five tests. As long as the method used is consistent, the results will be consistent. It may be helpful to repeat the test with additional known good units recording the attenuation limit for each, especially for a new product. Eventually, a “worst of the best” unit can be retained for future calibration use. This is a unit that, while good and passing all the requirements, exhibits the lowest attenuation limit ever seen in a good unit. Now that a limit has been found, the fixed attenuation should be installed in the cable. The total attenuation should be selected such that it is lower than the limit value found using the golden units by some guard band (–3 dB, for example.) The type of defect results in far greater than 3 dB of reduction in either transmit power or receive sensitivity. Finally, the golden DUT should be tested once more with the fixed attenuation installed to ensure that the setup is still working. The test should pass repeatedly. If it does not, check the attenuation value and all connections again. 10 CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B 3. Hardware The manufacturing testing system involves three major components: MTK test fixture, MTK device under test (DUT), and an optional PC to monitor and control the MTK test fixture. Figure 3-1. System Diagram 3.1 Theory of Operation By default the MTK test fixture executes a set of standard tests when you push the START button. It sends predetermined test packets to the MTK DUT and expects the MTK DUT to reply to the same packet with the RX status. LEDs on the test fixture indicate if the test succeeds or fails. To change the parameters for standard tests, such as channel number, number of packets, packet length, and so on, it can be done through a control PC. The MTK test fixture provides a RS232 port and its firmware runs command line protocol. You can use any serial communication application such as a HyperTerminal to send commands to and receive status from test fixture. See Command Line Interface on page 17 for details. 3.2 Schematic The MTK test fixture’s main board schematic is included in the kit under /Hardware. CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B 11 Hardware 12 CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B 4. 4.1 Firmware Overview The MTK test firmware is divided into two parts: the Test Fixture firmware and the DUT Test Code. The DUT test code is a small bit of additional code that resides in the DUT memory and can be accessed only by placing the DUT into a special test mode (see section 4.2 DUT Test Code for more details). In test mode, the DUT in the test chamber exchanges packets with the test fixture. The data packet from the test fixture to the DUT is checked for errors by the DUT and the error count recorded. The DUT then sends a data packet back to the test fixture that includes the error count information. The test fixture uses this information, as well as information it collects about errors in the received data packet from the DUT, to determine if the test passes or fails. 4.2 DUT Test Code All packets received by the DUT are ‘echoed’ with the addition of a byte that contains the count of invalid bits for the received packet. Extra bytes in packets that are larger than what the DUT can support are ignored. Received packets of the correct length are then parsed for possible RF command packets. The RF command packets exchanged between the MTK test fixture and the MTK DUT contain two or more bytes. The first byte contains the command type and the remaining bytes contain the parameter value. All commands are executed after the received packets are ‘echoed’. The DUT manufacturing test code adds approximately 500–800 bytes depending on the device and firmware version. The CY4672 PRoC LP RDK Bridge enters the Manufacturing Test Mode when the Bind button on the Bridge is pressed during power on. The CY4672 RDK mouse and keyboard use a compile time define to enter the test mode by detecting a specific grounded pin or a special key sequence during power-up. The following sections provide the details (the process of testing the CY4636 WirelessUSB LP RDK is also the same). 4.2.1 CY4672 PRoC LP RDK Bridge The manufacturing test module may be conditionally compiled to provide manufacturing test support. The module configures the radio for reception and then enters a loop waiting for command packets to be sent from the tester. The test echoes all echo command packets appended with the number of invalid bits received and all other 'valid' command packets (no invalid bits). The manufacturing test code can only be exited by cycling power. You can enter the manufacturing test mode on the PRoC LP RDK Bridge using the following methods depending on the compile time configuration: 1. Press the Bind button during dongle insertion into the USB Host. 2. Force a SE1 condition (D+ and D– are both high) on the USB bus and, at the same time, apply power to the bridge. 3. Ground the P0.7 pin during dongle insertion into the USB Host. CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B 13 Firmware 4.2.2 CY4672 PRoC LP RDK Mouse The manufacturing test module may be optionally compiled, at the expense of code space, by defining the macro MFG_TEST_CODE. In addition, a more complete version may be compiled by defining MFG_TX_MODES. The TX modes include the code to perform a carrier test and a random data test. Entry into this mode on the mouse is performed by placing a shorting block over pins 4 and 5 of the ISSP programming header and then inserting the batteries. To exit the test mode, remove the batteries and the shorting block. 4.2.3 CY4672 PRoC LP RDK Keyboard The RDK provides a compile time option to add a manufacturing test mode to the keyboard. If MFG_TEST_CODE is defined and ENTER_BY_PIN is not defined, you can enter the manufacturing test mode by holding down the system sleep key and the Bind button, while inserting the batteries into the keyboard. If MFG_TEST_CODE and ENTER_BY_PIN are both defined, you can enter the manufacturing test mode by connecting pins 4 and 5 on the ISSP header with a shunt and then inserting the batteries into the keyboard. The only way to exit this mode is to cycle power. 4.3 Test Fixture Firmware The test fixture firmware controls the standard test that is executed when the START button is pressed. It also enables communication over the serial port. The source code for PSoC® in the MTK test fixture is included in the kit CD-ROM. You may customize the test firmware as desired. PSoC can be reprogrammed using the ISSP header on the board. Figure 4-1 shows the location of the header. Figure 4-1. ISSP Header Location 14 CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B Firmware 4.4 RF Protocol Command packets received by the DUT are “echoed” with the addition of an added byte that contains the count of invalid bits for the received packet. Extra bytes in packets that are larger than what the DUT can support are ignored. Commands other than “Echo Packet” are only “echoed” and executed if the number of invalid bits are zero. The RF command packets exchanged between the MTK test fixture and the MTK DUT contain two bytes. The first byte contains the command type and the subsequent byte(s) contain the parameter values as shown in Table 4-1. Table 4-1. RF Commands Description Echo packet Command 0x00 Parameter N/A Channel (0–77) Set new configuration 0x61 PN code index (0–7) PA (0–7) Correlator Threshold (0–16) Transmit carrier 0x66 Transmit random pattern 0xA3 Time in seconds (0–255) Note: A zero runs the test continuously until a reset. Time in seconds (0–255) Note: A zero runs the test continuously until a reset. Note The “Transmit carrier” and “Transmit random pattern” test modes can be conditionally compiled with the definition “MFG_TX_MODES”. CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B 15 Firmware 16 CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B 5. 5.1 Command Line Interface Serial Command Line Interface The MTK test fixture implements a text-based protocol over an RS232 serial port to provide both a configurable standard test and script-based testing. All commands listed under the standard test set a configuration value that is stored in nonvolatile storage. All remaining serial commands only affect the current setting and are not stored (reset across power cycles). Table 5-1 describes the serial port protocol in the PC to test fixture direction. Table 5-1. Serial Command Protocol Command ST Command Description Start standard test PN Configure pin code index (0–7) TT Configure TX error threshold (0–65535) units of bit errors RT Configure RX error threshold (0–65535) units of bit errors C1 Configure channel (0–77) C2 Configure second channel (0–77) C3 Configure third channel (0–77) CB Configure number of bytes/packet payload (0–15) TC Transmit carrier (0–255) TR Transmit random (0–255) SC Set communication (0–77) (0–7) (0–7) (0–16) PD Set packet data (ASCII representation of hexadecimal numbers without any prefix, that is, 5A 34 CB) CA Set crystal frequency adjust value (0–63) RE Restore NVRAM defaults CS Show current configuration HE Show help menu CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B 17 Command Line Interface Every serial command issued by the PC is returned with a response after the command is complete. The valid responses are shown in Table 5-2. Table 5-2. Serial Response Protocol Report Report Description OK Command complete CE Command error TE TX error count (units of bit errors) RE RX error count (units of bit errors) All serial commands must end in either a carriage return or carriage return and linefeed. All responses end with a carriage return and linefeed. The serial port settings for the MTK test fixture are shown in Table 5-3. Neither software nor hardware handshake is supported. Table 5-3. Serial Port Parameter Settings Serial Port Parameter 18 Setting Baud rate 9600 Parity None Number of data bits 8 Number of stop bits 1 CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B 1. Appendix 1.1 Appendix - A 1.1.1 Using the Command Line Interface The default serial port settings for the test fixture are 9600, N, 8, 1, NONE, with local echo turned on in the terminal emulator of choice. When power is applied to the test fixture, the following welcome banner comes up in the terminal window. ****************************************************************************** WirelessUSB Tester - v1.0 For help, type: he ****************************************************************************** MTK> If this banner is not displayed, then recheck the serial port connection and settings. All serial port commands are case insensitive. While the help menu displays commands in upper case, they may be entered in lower case. The PD command requires parameters to be entered in hexadecimal format without any prefix or postfix characters (see the help menu for an example.) The letters in the hexadecimal numbers may be lowercase as well. A listing of all the supported commands with parameter limits is displayed by typing the command HE as shown in the welcome banner. Following is an output example of the help menu. MTK> he TESTER HELP MENU ****************************************************************************** All commands and parameters are case insensitive. The following commands are executed immediately: Show This Help Menu ........................... HE Show Current Tester Settings .................. CS Execute Standard Test ......................... ST Set Channel, PN Code, Power, Correlator ....... SC Transmit Carrier for N seconds, 0 = infinite .. TC Transmit Random for N seconds, 0 = infinite ... TR Send Data to DUT, e.g. PD 5A 00 0A FF 34 ...... PD Tester Crystal Adjust (stored in EEPROM) ...... CA Crystal Clock Output ON=1/OFF=0 ............... XO Restore Default Settings to EEPROM ............ RE CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B 19 The following commands save values to EEPROM for standard test configuration: Configure Correlator Threshold ................ CO Configure Power Level ......................... CL Configure PN Code ............................. PN Configure First Channel, 255 to disable ....... C1 Configure Second Channel, 255 to disable ...... C2 Configure Third Channel, 255 to disable ....... C3 Configure Tx Error Threshold .................. TT Configure Rx Error Threshold .................. RT Configure Packet Payload Length ............... CB Configure Number of Packets Sent on Channel ... CP All commands return one of the following: OK ................. Command Success CE ................. Command Error Commands PD and ST also return: TE ........ DUT Receive Error Rate RE ........ Tester Receive Error Rate ****************************************************************************** OK MTK> All commands return either OK (successful command completion) or CE (command error.) A successful command completion in the case where DUT interaction is involved does not necessarily mean that the DUT successfully completed the request. The PD command and the Standard Test command ST both report additional information of bit error rates. The TE result is the number of bit errors counted by the DUT and is computed on the test fixture by using the contents of the returned packet from the DUT. If a response to a data packet is not received by the test fixture, then a 100% bit error rate is assumed on the sent packet. The RE result is computed using the received packet from the DUT. A portion of the commands are used to configure the Standard Test that is executed by pressing the START button on the test fixture. These values are saved in nonvolatile storage and remembered across power cycles. The saved values only take affect when the Standard Test is executed. The current configuration of the test fixture can be reported by typing the command CS at the command prompt. Following is an example of the output from this command. MTK> cs TESTER CONFIGURATION ****************************************************************************** Radio Configuration: Channel .................. 2 PN Code .................. 1 Power Level .............. 7 Correlator threshold ..... 2 Crystal adjust ........... 3 Crystal clock output ..... OFF Standard Test Configuration: Channel 1 ................ 1 Channel 2 ................ 255 Channel 3 ................ 255 PN Code .................. 1 Power Level .............. 7 Correlator threshold ..... 2 20 CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B Tx error threshold ....... Rx error threshold ....... Packet payload length .... Packets per channel ...... 1000 1000 5 128 ****************************************************************************** WUSB LS Radio Registers Output format in hex: addr:val 00:07 08:00 10:ff 18:b2 20:64 28:00 30:00 38:64 01:04 09:00 11:dc 19:02 21:04 29:00 31:00 39:00 02:4a 0a:00 12:c0 1a:1e 22:00 2a:00 32:41 3a:00 03:00 0b:00 13:6b 1b:10 23:07 2b:10 33:41 3b:00 04:06 0c:00 14:b8 1c:00 24:42 2c:fa 34:f7 3c:d3 05:01 0d:01 15:2b 1d:01 25:00 2d:f0 35:00 3d:8a 06:0b 0e:00 16:09 1e:00 26:0f 2e:80 36:00 3e:d5 07:03 0f:00 17:bb 1f:00 27:00 2f:00 37:63 3f:3e ****************************************************************************** OK MTK> The standard test can be executed from the PC by typing the ST command at the command prompt in the terminal window. The first channel is set to 255 and all following channels are not tested. The results are displayed in the terminal similar to the following. MTK> st TE 864 RE 1008 OK MTK> The error results in the previous paragraph are typical of a non responding DUT. Note that when pressing the START button on the test fixture that the test results are displayed in the terminal window without the command response and command prompt as follows. TE 864 RE 1008 The commands not related to the Standard Test configuration are executed immediately from the command prompt. These are used for interactive testing/debug or with a script for extended automated testing. CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B 21 1.2 Appendix - B 1.2.1 Test Chambers An anechoic RF test chamber, sized appropriately for the DUT with SMA pass through connectors is required. There are several important factors to consider when buying a chamber, such as the attenuation of RF energy that comes into the box from outside, the attenuation of RF energy that is reflected from the inside of the box, and the connectors for passing signals through the walls. The requirements are as follows: ■ Attenuation of incoming RF energy: 30 dB at 2.4 GHz ■ Attenuation of reflected RF energy: 15 dB at 2.4 GHz ( 7.5 dB each direction) ■ Connectors: One (1) SMA minimum Many vendors sell test chambers that work. Following are some examples of units used before: 22 ■ Mironix model ME8662E ■ Ramsey Electronics model STE2200 with optional CONN157. (A small box nicely sized for a mouse or dongle, or small bare boards.) ■ Ramsey Electronics model STE3300 with optional CONN157. ■ Ramsey Electronics model STE4400 with optional CONN157. (Large enough for a full size keyboard in plastic.) CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Cypress Semiconductor: CY3631