AMBE-2000 Digital Voice Systems, Inc., AMBE-2000 Datasheet - Page 16

• 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.

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H = 7.629 ns
CLKOUT is shown for reference only. It is not to be connected in the circuit.
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t
f
t
(CO)/t
Reference
d
Reference
t
t
t
(CIH-CO)
t
t
w
t
t
su
t
w
su
w
t
X2/CLKIN
w
h
t
t
w
RESETN
(RSL)
t
c
Figure 3-B Hardware Reset Timing Diagram
Table 3-B Reset Timing Parameters
(COH)
(COL)
f
r
(RS)
(INT)
Table 3-A X2/CLKIN and CLKOUT Timing Parameters
c
(CIH)
(CO)
(RS)
(CL)
(CL)
(CIL)
CLKOUT
(CI)
t
CLKOUT is shown for reference only. It should not be connected in the circuit.
p
r
(CO)
Hold time, RS after CLKOUT low
Pulse duration, RS low
Setup time, RS before X2/CLKIN low
Setup time, INTn, NMI, RS before CLKOUT low
Cycle time, X2/CLKIN
Fall time, X2/CLKIN
Rise time, X2/CLKIN
Pulse duration, X2/CLKIN low
Pulse duration, X2/CLKIN high
Transitory phase, PLL lock-up time
Cycle time, CLKOUT (typical is
Delay time, X2/CLKIN high/low to CLKOUT high/low
Fall/Rise time, CLKOUT (typical is 2 ns)
Pulse duration, CLKOUT low
Pulse duration, CLKOUT high
AMBE-2000™ Vocoder Chip
User’s Manual Version 4.0
Parameter
Integer PLL multiplier N (N=4)
Parameter
t
su
t
c
(INT)
(CI)/4
t
su
(RS)
t
w
(RSL)
Min
t
50
10
Min
H-4
H-4
h
0
5
20
15
(RS)
6
6
4
Max
Max
400
50
16
H
H
4
4
Page 16
Units
Units
ns
µs
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
ns
ns