Cirrus Logic CS4970x4 - Manual (Page 9)

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)
T
A
0 +25 + 70 °C
Commercial T
j
0 +125 ºC
Parameter Symbol Min Typ Max Unit
High-level input voltage V
IH
2.0 — — V
Low-level input voltage, except XTI V
IL
— — 0.8 V
Low-level input voltage, XTI V
ILXTI
— — 0.6 V
Input Hysteresis V
hys
— 0.4 — V
High-level output voltage (I
O
= -4mA), except XTI, SDRAM
pins
V
OH
VDDIO * 0.9 — — V
Low-level output voltage (I
O
= 4mA), except XTI, SDRAM
pins
V
OL
— — VDDIO * 0.1 V
SDRAM High-level output voltage (I
O
= -8mA) V
OH
VDDIO * 0.9 — — V
SDRAM Low-level output voltage (I
O
= 8mA) V
OL
— — VDDIO * 0.1 V
Input leakage current (all digital pins with internal pull-up
resistors disabled)
I
IN
— — 5
A
Input leakage current (all digital pins with internal pull-up
resistors enabled, and XTI)
I
IN-PU
— — 70
A
Parameter Min Typ Max Unit
Power supply current:
Core and I/O operating: VDD
1
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