CS4970x4 Data Sheet

32-bit High Definition Audio Decoder DSP Family

DS752F1

9

5.2 Recommended Operating Conditions

(GNDD = GNDIO = GNDA = 0 V; all voltages with respect to 0 V)

Note: It is recommended that the 3.3 V IO supply come up ahead of or simultaneously with the 1.8 V core supply.

5.3 Digital DC Characteristics

(Measurements performed under static conditions.)

5.4 Power Supply Characteristics

(Measurements performed under operating conditions.)

Parameter

Symbol

Min

Typ

Max

Unit

DC power supplies:

Core supply

PLL supply

I/O supply

|VDDA – VDDIO|

VDD

VDDA

VDDIO

1.71

3.13

3.13

1.8

3.3

3.3

0

1.89

3.46

3.46

V

V

V

V

Ambient operating temperature

Commercial Grade (CQZ/CVZ)

0

+25

+ 70

°C

Commercial

0+125

ºC

Parameter

Symbol

Min

Typ

Max

Unit

High-level input voltage

2.0

—

—

V

Low-level input voltage, except XTI

——

0.8

V

Low-level input voltage, XTI

——

0.6

V

Input Hysteresis

—0.4

—

V

pins

VDDIO * 0.9

—

—

V

pins

——

VDDIO * 0.1

V

VDDIO * 0.9

—

—

V

——

VDDIO * 0.1

V

Input leakage current (all digital pins with internal pull-up

resistors disabled)

——

5

A

Input leakage current (all digital pins with internal pull-up

resistors enabled, and XTI)

——

70

A

Parameter

Min

Typ

Max

Unit

Power supply current:

PLL operating: VDDA

With external memory and most ports operating: VDDIO

1.Dependent on application firmware and DSP clock speed.

—

—

—

350

3.5

120

—

—

—

mA

mA

mA