SA589 Sames, SA589 Datasheet - Page 10

• Manufacturer Part Number: SA589
• Description: LD/DTMF SWITCHABLE DIALLERS WITH DEDICATED KEYS FOR 20 MEMORIES
• Manufacturer: Sames

TABLE 3: Tone Frequencies
NOTE: There will be an additional frequency error caused by any deviation of the resonator
LOOP DISCONNECT DIALLING
The MASK output is provided in order to disable the speech circuit during LD dialling.
Consequently the MASK output is normally at logic '1' in the off-hook condition, but changes
to logic '0' during LD dialling. MASK also changes to logic '0' in order to signal a Timed Break
Recall (Flash) to the line.
Both MUTE and MF OUT remain low during LD dialling. LD dialling is signalled on the IMP
output. A break is signalled by a logic '0'. Make periods and IDP times are signalled by a logic
'1'. When not dialling, the IMP output sits at logic '0'.
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SA589 FAMILY
Deviation from nominal (%)
Nominal frequency (Hz)
frequency from the nominal 560kHz.
H O O K S W I T C H
Keypad
K E Y P R E S S
C O L U M N
R O W
M A S K
IMP
M U T E ( L O W )
M F O U T
D R - 0 0 6 8 8
"5"
Fig. 6 LD mode timing diagram
-0.07 -0.10 +0.19 -0.15 -0.17
697
"8"
R1
"5"
"IDP"
770
R2
2 . 2 3 4 0
"8"
852
R3
" T B R "
O N H O O K T I M E O U T
941
R4
1209
C1
"9"
"9"
(PARTIAL)
-0.20 -0.22 -0.31
1336 1477 1633
C2
C3
C4