le79231 Zarlink Semiconductor, le79231 Datasheet - Page 5

• Manufacturer Part Number: le79231
• Description: Intelligent Subscriber Line Interface Circuit
• Manufacturer: Zarlink Semiconductor

LE79231 ISLIC DEVICE INTERNAL BLOCK DIAGRAM
HPA
TMS
HPB
TMN
TMP
VBH
RYE
VBL
AD
SA
SB
BD
R3
R2
R1
BGND
Meas.
Meas.
Fault
Fault
Power amplifiers positive supply
IA
IB
BGND
Management
High Neg.
Bat. sel.
Thermal
Control
600
IB
IA sense
IB sense
600
IA
RD1
RD2
P1
Zarlink Semiconductor Inc.
Control Register
A Amplifier
RD3
B Amplifier
Demux
+
-
+
-
P2
Amplifiers
To Power
VREF
C1
5
P3
Decoder
C2
C3
+
-
-
+
600
600
IA
IA
+
+
-
LD
600
600
IB
IB
VREF
Gain/Level Shift
VCC
Shutdown
Thermal
+
-
β
VREF
=
0.01
GND
VREF
VSAB
CREF
RSN
VTX
VLB
IMT
ILG