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CS49530X Fiches technique(PDF) 9 Page - Cirrus Logic |
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CS49530X Fiches technique(HTML) 9 Page - Cirrus Logic |
9 / 37 page CS4953xx Data Sheet 32-bit Audio Decoder DSP Family DS705F2 9 4.3.2 Termination Requirements Open-drain pins on the CS4953xx must be pulled high for proper operation. Refer to the CS4953xx Hardware User’s Manual to identify which pins are open-drain and what value of pull-up resistor is required for proper operation. Mode select pins on the CS4953xx are used to select the boot mode upon the rising edge of reset. A detailed explanation of termination requirements for each communication mode select pin can be found in the CS4953xx Hardware User’s Manual. 4.3.3 Pads The CS4953xx I/O operates from the 3.3 V supply and is 5 V tolerant. 4.4 Application Code Security The external program code may be encrypted by the programmer to protect any intellectual property it may contain. A secret, customer-specific key is used to encrypt the program code that is to be stored external to the device. 5 Characteristics and Specifications Note: All data sheet minimum and maximum timing parameters are guaranteed over the rated voltage and temperature. All data sheet typical parameters are measured under the following conditions: T = 25 °C, CL = 20 pF, VDD = VDDA = 1.8 V, VDDIO = 3.3 V, GNDD = GNDIO = GNDA = 0 V. 5.1 Absolute Maximum Ratings (GNDD = GNDIO = GNDA = 0 V; all voltages with respect to 0 V) CAUTION: Operation at or beyond these limits may result in permanent damage to the device. Normal operation is not guaranteed at these extremes. Parameter Symbol Min Max Unit DC power supplies: Core supply PLL supply I/O supply |VDDA – VDDIO| VDD VDDA VDDIO –0.3 –0.3 –0.3 - 2.0 3.6 3.6 0.3 V V V V Input pin current, any pin except supplies Iin —+/- 10 mA Input voltage on PLL_REF_RES Vfilt -0.3 3.6 V Input voltage on I/O pins Vinio -0.3 5.0 V Storage temperature Tstg –65 150 °C |
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