am79231 ETC-unknow, am79231 Datasheet - Page 11

• Manufacturer Part Number: am79231
• Description: Intelligent Subscriber Line Interface Circuit Islic
• Manufacturer: ETC-unknow

INTELLIGENT ACCESS™ VOICE CHIPSETS LINECARD WITH AM79231
Figure 3.
KRi
Ring Bus
B
(B)
A
RGFDLi
DT2i
External Ringing Linecard Schematic
RSBi
RSAi
RFAi
***
RFBi
R TE S T
BATH
BATH
BATL
CBATHi
6
7
2
KRi(A)
CS
DHi
KRi
DLi
U5
1
4
+5 V
RMGPi
RMGLi
CBATLi
5
8
CHPi
CADi
CBDi
CSSi
*** DT2i is optional - Should be put if there is a chance that this
chip may be replaced by Am79R251.
* CSS required for > 2.2 Vrms metering
** Connections shown for one channel
TMN
BGND
HPA
HPB
TMP
VBH
RYE
R2H
R3H
VBL
RSVD2
SA
AD
BD
SB
TMS
R1
VCC
+5 V
Am79231 Data Sheet
Am79231
U1
CREF
RSRBi
3.3 V
RSRC
RSVD
VSAB
VREF
GND
RSN
VTX
VLB
IMT
ILG
LD
P1
P2
P3
RMTi
RLGi
VREF
VREF
CHLbi
RTi
RHLci
RHLai
RRXi
VREF
RHLbi
RHLdi
CHLdi
VOUTi
VHLi
VSABi
VINi
VLBi
VIMTi
VILGi
VREF
LDi
P1
P2
P3
XSBi
ISLAC
U2
DGND
AGND
VCCD
VCCA
SPB
IREF
SHB
SLB
XSC
PLANE
RSHB
RSLB
BACK
RREF
BATH
VCC
+3.3 VDC
BATL
11