TrueSpeech® Co-Processor
PRELIMINARY/CONFIDENTIAL
Version: 1.18
12 Electrical Characteristics
Table 12-1: Absolute Maximum Ratings Over Specified Temperature Range
Supply voltage range, VCC
Input voltage range
Operating free-air temperature range
Storage temperature range
-0.3 V to 6 V
-0.3 V to 6 V
0°C to 70°C
-55°C to 150°C
Table 12-2: Recommended Operating Conditions
PARAMETERS
MIN
TYP
5
0
MAX
UNIT
VCC supply voltage
VSS supply voltage
4.5
5.5
V
V
V
VIH high-level input voltage
2
(all digital input pins except RESET)
VIL low-level input voltage
0.8
4.6
V
(all digital input pins except RESET)
VT+ positive going RESET threshold (at VCC = 5.0 v)
VT- negative going RESET threshold
IOH high level output current
IOL low level output current
3.35
1.9
V
V
mA
mA
MHz
1.3
+4
-4
4.096
Oscillator crystal (100 PPM)
4.096
Note: the exact 4.096 MHz crystal frequency used to
generate the 45.056 main clock via the x11 PLL is required
only if the CT8022 is to operate in CODEC master mode and
generate a SCLK signal at exactly 2.048 MHz.
TA operating free-air temperature
0
70
°C
The following circuit is recommended for driving the CT8022 RESET pin in order to meet the VIH spec for this pin:
VCC
10K
RESET
10K
RESET
172
DSP GROUP, INC., 3120 SCOTT BOULEVARD CT8022A11AQC FW Revision 0118
SANTA CLARA, CA 95054 PH: 408 986 – 4300 FAX: 408 986 – 4490
All specifications are subject to change without prior notice.
ETC [ ETC ]
