PBL386151 Ericsson, PBL386151 Datasheet - Page 8

• Manufacturer Part Number: PBL386151
• Description: Subscriber Line Interface Circuit
• Manufacturer: Ericsson

PBL 386 15/1
Pin Description
Refer to figure 7.
SSOP
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
8
1
2
3
4
5
6
7
8
9
Symbol
RRLY
TS
HP
RINGX
BGND
TIPX
VBAT
VBAT2
NC
PSG
LP
DT
DR
NC
NC
VEE
REF
SPR
PLC
PLD
VCC
C3
C2
C1
DET
RSN
AGND
VTX
}
Description
protection components and ring relay (and optional test relay).
On-hook battery voltage. Negative with respect to BGND.
Off-hook battery voltage, connected in series with a diode.
No Connect. Must be left open.
Programmable Saturation Guard. Must be connected to VBAT2.
Low Pass saturation guard filter capacitor connected here to filter out noise and improve PSRR. Other end of
C
low, indicating off-hook condition. The ring trip network connects to this input.
low, indicating off-hook condition. The ring trip network connects to this input.
connected from this pin to AGND.
connected from this pin to AGND.
key detection, active low when indicating temperature alarm.
Receive Summing Node. 400 times the current flowing into this pin equals the metallic (transversal) current
flowing from TIPX to RINGX. Programming networks for two-wire impedance and receive gain connect to the
receive summing node.
Analog Ground, should be tied together with BGND.
Transmit vf output. The ac voltage difference between TIPX and RINGX, the ac metallic voltage, is
reproduced as an unbalanced GND referenced signal at VTX with a gain of -0.5. The two-wire impedance
programming network connects between VTX and RSN.
Ring Relay driver output.
Tip Sense should be connected to TIPX.
High Pass connection for ac/dc separation capacitor C
The TIPX and RINGX pins connect to the tip and ring leads of the two-wire interface via overvoltage
protection components and ring relay (and optional test relay).
Battery Ground, should be tied together with AGND.
The TIPX and RINGX pins connect to the tip and ring leads of the two-wire interface via overvoltage
Input to the ring trip comparator. With DR more positive than DT the detector output, DET, is at logic level
Input to the ring trip comparator. With DR more positive than DT the detector output, DET, is at logic level
No Connect. Must be left open.
No Connect. Must be left open.
-5V power supply, if not -5 V available connect to VB2 or VBAT (VB2 lower power dissipation than VBAT).
A 15k
Silent Polarity Reversal. The polarity reversal time can be adjusted with a capasitor connected to AGND.
Prog. Line Current, the constant current part of the DC feed characteristic is programmed by a resistor
Programmable Loop Detector threshold. The loop detection threshold is programmed by a resistor
+5 V power supply.
C1, C2 and C3 are digital inputs Controlling the SLIC operating states. Refer to section
Operating states for details.
Detector output. Active low when indicating loop or ring trip detection, active high when indicating ground
LP
connects to VBAT2.
resistor must be connected between this pin and AGND.
HP
. Other end of C
HP
connects to RINGX (pin 26).