V1.9 September 2006
Data Sheet
Ag1170
+5V / +3.3V LOW POWER RINGING SLIC
1.1 Pin Description – SIL Package
Pin #
Name
Description
1
RING (B)
Ring. Connects to the subscriber line Ring.
2
TIP (A)
Tip. Connects to the subscriber line Tip.
3
F/R
Forward/Reverse. A logic 0 will reverse the Tip and Ring voltage
polarities. F/R is toggled to produce the ringing output.
4
RM
Ringing Mode. Sets bias conditions during ringing. Must be set
to logic 1 during ringing. Logic 0 for other modes.
5
SHK
Switch Hook. Indicates an off-hook condition when at logic 1.
6
*ZT1
Line. Connect to ZT2 via impedance programming components.
7
*ZT2
Line Impedance. Connect to ZT1 via impedance programming
components
8
*ZB
Balance Impedance. Connect to VIN via impedance
programming components
9
VIN
Audio In. Analog input signal from the Codec (which is output on
Tip and Ring). Connect via a 100nF capacitor
10
VOUT
Audio Out. This is the analog output signal (from Tip and Ring)
to the Codec. Connect via a 100nF capacitor.
11
+VA
Analog Supply. Connected to the +5V or +3.3V supply via an
RC filter, to supply power to the analog circuits.
12
GNDPWR
DC/DC Ground. Ground input for the DC/DC converter.
13
+VPWR
DC/DC Supply. +5V or +3.3V input for the DC/DC converter.
14
PD
Power Down of DC/DC Converter. A logic 0 powers off the
DC/DC converter. Leave open circuit for free run operation. DO
NOT input logic 1 to this pin.
* Only used for the Ag1170P device. Do not connect for Ag1170 as the impedances are programmed to 600R internally
© Silver Telecom 2006
5
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