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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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CDB5528 Fiches technique(PDF) 9 Page - Cirrus Logic |
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CDB5528 Fiches technique(HTML) 9 Page - Cirrus Logic |
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9 / 28 page  CDB5521/22/23/24/28 DS317DB2 9 1.6 Software The evaluation board comes with software and an RS-232 cable to link the evaluation board to the PC. The executable software was developed with Lab Windows/CVITM and meant to run under Win- dowsTM 3.1 or later. After installing the software, read the readme.txt file for last minute changes in the software. Additionally, Section 2., Part II: Soft- ware further details how to install and use the soft- ware 1.7. Writing Your Own Interface Software Tables 2 through 5 list the RS-232 commands used to communicate between the PC and the microcon- troller. To develop additional code to communi- cate to the evaluation board via RS-232, the following applies: to write to an internal ADC reg- ister, choose the appropriate write command byte (See Table 2), and transmit it LSB first. Then, transmit the three data bytes lowest order byte (bits 7-0) first with the LSB of each byte transmitted first. These three data bytes provide the 24-bits of information to be written to the desired register. To read from an internal register, choose the appro- priate read command byte and transmit it LSB first. Then, the microcontroller automatically acquires the ADC’s register contents and returns the 24-bits of information. The returned data is transmitted lowest order byte first with the LSB of each byte transmit- ted first. Name Function Description HDR1 Used to switch AIN1+ (AIN1 on CS5528) between J1 and AGND. HDR2 Used to switch AIN1- (AIN2 on CS5528) between J1 and AGND. HDR3 Does not exist. HDR4 Used to switch the power for NBV from the LM337, CPD, or AGND. HDR5 Used to switch VREF+ and VREF- pins from external J2 header to the on board LT1019 reference. HDR6 Used to connect an external micro- controller. HDR7 Used in conjunction with the self test modes to test the UART/RS232 com- munication link between the micro- controller and a PC. HDR8 Used to switch AIN2 + (AIN3 on CS5528) between J1 and AGND. HDR9 Used to switch AIN2- (AIN4 on CS5528) between J1 and AGND. HDR10 Does not exist. HDR11 Used to switch AIN3+ (AIN5 on CS5528) between J1 and AGND. HDR12 Used to switch AIN3- (AIN6 on CS5528) between J1 and AGND. HDR13 Used to switch AIN4+ (AIN7 on CS5528) between J1 and AGND. HDR14 Used to switch AIN4- (AIN8 on CS5528) between J1 and AGND. Table 1. Header Descriptions |
Numéro de pièce similaire - CDB5528 |
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Description similaire - CDB5528 |
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