AMBE-2000 Digital Voice Systems, Inc., AMBE-2000 Datasheet - Page 15

• Manufacturer Part Number: AMBE-2000
• Description: 2.0 - 9.6 KBPS Single ic For Toll-quality, Low Data Rate, Real Time Speech Compression
• Manufacturer: Digital Voice Systems, Inc.

AMBE-2000™ Vocoder Chip
User’s Manual Version 4.0
3.3
Clock and Reset Timing
To reset the AMBE-2000 chip, the reset signal must be held low for a minimum of 50 µs. The recovery time from reset is
approximately 95 ms. In other words, 95 ms after the rising edge of the reset signal the AMBE-2000™ starts processing PCM
samples. The first packet will be ready after 252 PCM samples are read.
Figure 3-A X2/CLKIN and CLKOUT Timing Diagram
t
(CIL)
w
t
(CI)
t
(CIH)
f
w
t
(CI)
t
(CI)
r
c
X2/CLKIN
t
(CIH-CO)
d
t
(CO)
f
t
(COH)
w
t
(CO)
t
(CO)
t
(COL)
r
c
tp
w
Unstable
CLKOUT
DVSI Confidential Proprietary, Subject to Change
Page 15
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