am79514 Advanced Micro Devices, am79514 Datasheet - Page 11

• Manufacturer Part Number: am79514
• Description: Subscriber Line Interface Circuit
• Manufacturer: Advanced Micro Devices

Z
Z
R
R
T
RX
DC1
D
=
=
=
+
1000 Z
365
-------- -
R
I
---------- -
G
T
Z
DC2
42L
L
,
=
2WIN
----------------------------------------------------
Z
------------ -
I
C
2500
T
FEED
D
+
State
–
=
1000 Z
1000 Z
2R
0
1
2
3
4
5
6
7
0.5 ms
---------------- -
R
F
D
L
+
T
2R
C3 C2 C1
F
0
0
0
0
1
1
1
1
Table 2. User-Programmable Components
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Table 1. SLIC Decoding
Open Circuit
Ringing
Active
On-hook TX (OHT)
Tip Open
Reserved
Active Polarity Reversal Loop detector
OHT Polarity Reversal
SLIC Products
Two-Wire Status
Where Z
fuse resistors are R
impedance. When computing Z
pole and any external stray capacitance between VTX and
RSN must be taken into account.
Where Z
above, G
load impedance.
Where R
C
RDC pin. R
Where R
and I
DC
= (1.5 ms)(R
T
is the threshold current between on hook and off hook.
RX
T
D
DC1
42L
is connected between the VTX and RSN pins. The
and C
DC1
is connected from V
, R
is the desired receive gain, and Z
Ring trip
Ring trip
Loop detector
Loop detector
Loop detector
Loop detector
Loop detector
DC2
and R
D
DC1
form the network connected from RD to –5 V
E1 = 0
, and C
F
, and Z
+ R
DC2
DET Output
DC2
are approximately equal.
DC
2WIN
)/(R
form the network
RX
T
Ring trip
Ring trip
Ground key
Ground key
Ground key
Ground key
, the internal current amplifier
is the desired 2-wire AC input
DC1
to the RSN pin, Z
E1 = 1
R
—
—
DC2
) connected to the
L
is the 2-wire
T
is defined
11