mt8889csr1 Zarlink Semiconductor, mt8889csr1 Datasheet - Page 21

• Manufacturer Part Number: mt8889csr1
• Description: Integrated Dtmf Transceiver With Adaptive Micro Interface
• Manufacturer: Zarlink Semiconductor

AC Electrical Characteristics
† Timing is over recommended temperature & power supply voltages.
‡ Typical figures are at 25
AC Electrical Characteristics
† Characteristics are over recommended operating conditions unless otherwise stated
‡ Typical figures are at 25
NOTES:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. Referenced to the lowest amplitude tone in the DTMF signal.
11. For guard time calculation purposes.
16
17
18
19
10
12
13
14
15
16
17
11
1
2
3
4
5
6
7
8
9
dBm=decibels above or below a reference power of 1 mW into a 600 ohm load.
Tone duration=40 ms. Tone pause=40 ms.
Nominal DTMF frequencies are used.
Both tones in the composite signal have an equal amplitude.
The tone pair is deviated by ± 1.5%±2 Hz.
Bandwidth limited (3 kHz) Gaussian noise.
The precise dial tone frequencies are 350 and 440 Hz (±2%).
Guaranteed by design and characterization. Not subject to production testing.
Digit sequence consists of all 16 DTMF tones.
DS/RD/WR clock frequency
DS/RD/WR cycle period
DS/RD/WR low pulse width
DS/RD/WR high pulse width
DS/RD/WR rise and fall time
R/W setup time
R/W hold time
Address setup time (RS0)
Address hold time (RS0)
Data hold time (read)
DS/RD to valid data delay (read)
Data setup time (write)
Data hold time (write)
Chip select setup time
Chip select hold time
Input Capacitance (data bus)
Output Capacitance (IRQ/CP)
X
A
T
L
Crystal/clock frequency
Clock input rise and fall time
Clock input duty cycle
Capacitive load (OSC2)
Characteristics
°
°
Characteristics
C and for design aid only: not guaranteed and not subject to production testing.
C, V
DD
=5V, and for design aid only: not guaranteed and not subject to production testing
†
†
- MPU Interface -
(continued)
- Voltages are with respect to ground (V
Zarlink Semiconductor Inc.
DC
t
Sym.
CLRF
C
C
Sym.
t
f
t
t
t
t
t
t
t
t
f
DHW
t
RWH
DSW
C
CYC
t
RWS
t
DHR
DDR
LO
CYC
t
CSH
R,
CSS
C
t
AH
OUT
CH
AS
CL
MT8889C
CL
IN
Voltages are with respect to ground (V
t
F
21
3.5759
Min.
Min.
40
150
23
20
40
22
45
10
45
40
0
3.5795
Typ.
Typ.
250
100
4.0
50
20
35
5
5
‡
‡
3.5831
Max.
Max.
100
20
110
60
30
SS
), unless otherwise stated.
Units
MHz
SS
Units
MHz
pF
pF
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
pF
), unless otherwise stated.
ns
%
Ext. clock
Ext. clock
Figure 18
Figure 18
Figure 18
Figure 18
Figure 18
Figures 19 & 20
Figures 19 & 20
Figures 19 - 22
Figures 19 - 22
Figures 19 - 22
Figures 19 - 22
Figures 19 - 22
Figures 19 - 22
Figures 19 - 22
Figures 19 - 22
Conditions
Conditions
Data Sheet