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113D_1_week3notes

# 113D_1_week3notes - Interfacing C542 DSP to Analog...

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Interfacing ‘C542 DSP to Analog Interface Circuit EE113L Week 3 Rick Huang

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Week 3 EE113D EE Dept UCLA (c) RL 2 Administrative Stuff Assignments Due today Homework 2 Due next week Homework 3 Floppy Disk Graded Homework 1 Solutions posted on class website Agenda Reader pg45-70,79-84 Analog Interface Circuit Anti-aliasing filter cutoff Sampling rate Programming Interrupts Circular addressing Demo Instruments Experiment B
Week 3 EE113D EE Dept UCLA (c) RL 3 As a DSP Programmer Satisfy sampling theorem Program the analog chip For each incoming sample, 1. Read into DSP, 2. Process it, 3. Generate an outgoing sample.

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Week 3 EE113D EE Dept UCLA (c) RL 4 AIC Functional Block Diagram (TLC320AC01C Data Manual)
Week 3 EE113D EE Dept UCLA (c) RL 5 Analog Interface Circuit (AIC/AC01) Programming F S and F LP We choose variables A and B. F S = 10MHz / ( 2 A B ) F LP = 10MHz / ( 80 A ) Equations A B AIC registers Register 1 or A Register 2 or B Code REG1 REG2

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Week 3 EE113D EE Dept UCLA (c) RL 6 Zeroing out last 2 LSBs A = #0FFFCh & A Any value “and” with “1” is the value itself.
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113D_1_week3notes - Interfacing C542 DSP to Analog...

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