MH88615-3 Ver la hoja de datos (PDF) - Mitel Networks
Número de pieza
componentes Descripción
Fabricante
MH88615-3 Datasheet PDF : 6 Pages
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MH88615
Advance Information
TIP
1
RING
2
NC
3
DCRI
4
LPGND
5
VBat
6
NC
7
VDD
8
AGND
9
VEE
10
RC
11
PD
12
NC
13
SHK
14
VR
15
VRef
16
CAP
17
VX
18
NC
19
RV
20
Figure 2 - Pin Description
Pin Description
Pin # Name
Description
1
TIP Tip Lead. Connects to the “Tip” lead of subscriber line.
2
RING Ring Lead. Connects to the “Ring” lead of subsriber line.
3
NC No Connection. This pin may be used for internal connections.
4
DCRI DC Ringing Voltage Input. A continuous 120 Vdc is applied to this pin. This voltage is the
positive supply rail for the internal ringing amplifier for subscriber line.
5
LPGND Battery Ground. VBat return path for subscriber line. Connects to the systems’s energy
dumping ground.
6
VBat Battery Voltage. Battery supply feed for subscriber line. Typically -48Vdc is applied to this
pin.
7
NC No Connection. This pin may be used for internal connections.
8
VDD Positive Supply Voltage. +5V dc supply rail.
9
AGND Analogue Ground. VDD and VEE return path.
10
VEE Negative Supply Voltage. -5V dc supply rail.
11
RC Ringing Control. This input enables the ringing voltage feed to Tip and Ring for subscriber
line.
12
PD Power Denial. A logic high will isolate the battery voltage for Tip and Ring.
13
NC No Connection. This pin may be used for internal connections.
14
SHK Switch Hook Detect. A logic high indicates when subscriber line has gone off-hook.
15
VR Receive Signal. This is the 4 wire analogue signal received at subscriber’s set.
16
VRef Reference Voltage. A dc reference voltage is applied to this pin to set the constant current
feed to subscriber line. This pin may also be grounded for normal 25mA loop current.
17
CAP Ring Trip Filter Capacitor. A capacitor is normally connected from this pin to ground and
filters out low frequency ringing signals, preventing false off-hook conditions.
18
VX Transmit Signal. This is the 4 wire analogue signal transmitted from subscriber’s set.
19
NC No Connection. This pin may be used for internal connections.
20
RV Ringing Voltage. 1.5 Vrms signal is injected to this pin.
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