am79r251 Advanced Micro Devices, am79r251 Datasheet - Page 11

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

INTELLIGENT ACCESS
Figure 3.
B
A
RTESTMi
DT1i
BATH
RFBi
RSBi
RFAi
RSAi
Internal Ringing Linecard Schematic
BATP
CS1
U3
U4
BATH
BATL
DT2i
RTESTLi
CBATPi
CBATHi
CS2
DHi
U5
U6
DLi
RMGPi
RMGLi
BATP
CBATLi
CBDi
™
CADi
CSSi
CHPi
* CSS required for > 2.2 VRMS metering
** Connections shown for one channel
VOICE CHIPSETS LINECARD WITH Am79R251
HPA
HPB
TMP
TMN
VBH
VBP
RYE
R2
R3
R1
BGND
VBL
TMS
SA
AD
BD
SB
+5V
VCC
Am79R251
U1
RSVD
CREF
3.3V
Am79R251
VSAB
VREF
GND
VTX
RSN
LD
VLB
IMT
ILG
P1
P2
P3
RLGi
RMTi
CHLbi
RTi
VREF
RHLci
RRXi
VREF
RHLai
VREF
RHLdi
RHLbi
CHLdi
VHLi
VIMTi
VILGi
VREF
LDi
P1
P2
P3
VINi
VOUTi
VLBi
VSABi
ISLAC
U2
AGND
DGND
VCCD
IREF
VCCA
SBP
SHB
SLB
PLANE
BACK
RSHB
RSPB
RSLB
RREF
VCC
+3.3VDC
BATP
BATL
BATH
11