am79r251 Advanced Micro Devices, am79r251 Datasheet - Page 5

• Manufacturer Part Number: am79r251
• Description: Intelligent Subscriber Line Interface Circuit Islic
• Manufacturer: Advanced Micro Devices

Figure 2.
HPA
TMS
HPB
RYE
VBP
VBH
AD
BD
R3
SA
SB
VBL
R2
R1
TMN
TMP
BGND
BGND
Active High Voltage
Am79R251 Block Diagram
Meas.
Meas.
Fault
Fault
IA
IB
Amplifiers
Positive
Supply
Power
Management
High Neg
Batt Sel
Thermal
Control
600
IB
IA sense
IB sense
600
IA
RD1
RD2
P1
Control Register
RD3
A Amplifier
B Amplifier
Demux
+
+
-
-
Am79R251
P2
Amplifiers
To Power
VREF
C1
P3
Decoder
C2
C3
+
+
-
-
600
600
IA
IA
+
LD
600
600
IB
IB
VREF
Gain/Level Shift
VCC
Shutdown
+
-
Thermal
VREF
GND
VSAB
VREF
CREF
RSN
VTX
VLB
IMT
ILG
5