Instruction/ maintenance manual of the product DEM-PCM1717 Texas Instruments
Go to page of 16
1 ® DEM-PCM1717 ® © 1996 Burr-Brown Corporation LI-475 Printed in U.S.A. July, 1996 DEM-PCM1717 DEM-PCM1717-1 DEM-DAI1717 EVALUATION FIXTURE FEA TURES ● DEM-PCM1717 Basic evaluation board for the PCM1717 requires an external audio processor for connection to digital audio source.
2 ® DEM-PCM1717 BLOCK DIAGRAMS (CONT) PCM1717 GND Audio Data LRCK/BCK/DATA 256/384fs Control Data ML/MC/MD Lch Direct Out Lch Capacitive Out Rch Direct Out Rch Capacitive Out +V CC DEM-DAI17.
3 ® DEM-PCM1717 DEM-PCM1717 The DEM-PCM1717 is the basic evaluation fixture for the PCM1717 ∆Σ audio DAC. This fixture provides an easy way to connect power, data, and interface signals to the DAC. Figure 1 shows the block diagram of the DEM-PCM1717.
4 ® DEM-PCM1717 FIGURE 3. DEM-PCM1717 Schematic. CN2 ML MD MC RSTB GND +V CC + S1 ML/MUTE MC/DM1 MD/DM0 RSTB MODE C6 10µF R 1 + C3 2.
5 ® DEM-PCM1717 FIGURE 4. DEM-PCM1717 Parts Layout and Trace Design..
6 ® DEM-PCM1717 DEM-PCM1717-1 This demo board kit consist of a DEM-PCM1717 hardware board, together with an interface cable, for connecting the DEM-PCM1717 to power and connecting the software con- trol lines to an IBM-PC parallel port. DEM-PCM1717 also includes evaluation software, described later under Software Description.
7 ® DEM-PCM1717 DEM-DAI1717 also allows for operation in the hardware mode. In this mode, the special functions are limited to de- emphasis frequency selection, soft mute and reset. These hardware features are controlled with DIP switches, and no PC connection is required.
8 ® DEM-PCM1717 DEM-DAI1717 SYSTEM BOARD INFORMA TION GENERAL SPECIFICATIONS Table I lists the specifications for the DEM-DAI1717 sys- tem board. SPDIF Interface Optical via Toslink RCA with 75 Ω impedance.
9 ® DEM-PCM1717 HARDWARE CONNECTIONS FOR THE DEM-DAI1717 Hardware configuration of the DEM-DAI1717 evaluation board consists of supplying a source of digital audio data, connecting the board to an IBM-PC parallel port, connecting the audio output to a speaker or measurement tool and supplying a source of power to the system board.
10 ® DEM-PCM1717 PCM1717E for a more detailed explanation of these for- mats. Selecting either of these formats is done by clicking on the Format window and selecting the desired format. WIDTH This menu controls the number of bits that the PCM1717 uses for digital audio conversion.
11 ® DEM-PCM1717 FIGURE 11. DEM-DAI1717 Schematic. + C 21 10µF R 15 + C 17 0.1µF C 16 10µF PCM1717E 1 2 3 4 5 6 7 8 9 10 XTI DGND V DD LRCIN.
12 ® DEM-PCM1717 FIGURE 12. DEM-DAI1717 Parts Layout..
13 ® DEM-PCM1717 FIGURE 13. DEM-DAI1717 PCB Design..
14 ® DEM-PCM1717 FIGURE 15. Demo Software Attenuation Menu. FIGURE 14. Demo Software Main Menu. Control Data Input Format HOLD CLOSE Format Standard Width LRCK Low = R Output Format L-Out L-In R-Out .
15 ® DEM-PCM1717 FIGURE 16. Demo Software Format Menu. FIGURE 17. Demo Software Function Menu. Control Data PCM1717 Attenuate Control Functional Condition HOLD CLOSE DeEmph OFF DeEmph De-Emphasis Con.
IMPORT ANT NOTICE T exas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify , before placing orders, that information being relied on is current and complete.
An important point after buying a device Texas Instruments DEM-PCM1717 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Texas Instruments DEM-PCM1717 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Texas Instruments DEM-PCM1717 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Texas Instruments DEM-PCM1717 you will learn all the available features of the product, as well as information on its operation. The information that you get Texas Instruments DEM-PCM1717 will certainly help you make a decision on the purchase.
If you already are a holder of Texas Instruments DEM-PCM1717, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Texas Instruments DEM-PCM1717.
However, one of the most important roles played by the user manual is to help in solving problems with Texas Instruments DEM-PCM1717. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Texas Instruments DEM-PCM1717 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
