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Download "TMS320C2x Fixed-Point DSP User's Guide"
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Interfacing Peripherals Figure 6–24. Asynchronous Timing of TLC32040 to TMS320C2x FSX FSR For further information regarding the AIC interface, see page 11–196 of Linear and Interface Circuits Applications, Volume 3: Peripheral Drivers, Data Acquisition Systems, Hall-Effect Devices (literature number SLYA003), published by Texas Instruments. 6.5.3 Digital-to-Analog (D/A) Interface The high-speed operation of the internal logic circuitry of the TLC7524 8-bit digital-to-analog (D/A) converter allows an interface to the TMS320C2x with a minimum of external circuitry. Figure 6–25 shows the interface circuitry, which consists of one SN74ALS138 3-to-8-line decoder used to decode the address of the peripheral. Figure 6–25. Interface of TLC7524 to TMS320C2x TMS320C2x A15–A0 Address Bus (16) 74ALS138 A0 +5 V D A1 A2 V0 B C Where D = Digital Input A3 G2B G1 ref 256 TLC7524 G2A IS +*V A Y0 CS Vref REF RFB STRB D0–D7 WR 8 D0–D7 OUT1 OUT2 6-42 + V0 Hardware Applications
