Le79228
Data Sheet
Figure 21. External Ringing Line Schematic
+3.3 V
CVCC
+3.3 V
VCC
SA
RSAi
RRXi
CVCCD
RSN
VCCD
VOUTi
VHLi
U3i
Le75282
FAi**
RHLai
A
AD
See VHL Networks
for network selection
ARINGING
CADi
RHLdi
CHLdi
RHLci
ATEST
U4i **
Secondary
Protector
RVCCA
VREF
VCCA
BATH
RTi
U5i **
Secondary
Protector
CVCCA
BTEST
VTX
VINi
DGND
AGND
CVTXi
BRINGING
VSAB
VSABi
CSSi
*
FBi**
B
BD
SB
CBDi
VLB
IMT
VLBi
P1' P2' P3' LDi
P3 P2 P1 LDi
RSBi
VIMTi
GS1i
RMT1i
U1i
Le79232
U2
Le79Q2284
VREF
RMT2i
*
VBF
ILG
VILGi
BACK
CVBFi
PLANE
GS2i
RLG1i
VREF
RLG2i
*
VREF
LDi
VREF
VRN
LD
BATH
BATL
VBH
VBL
CVRNi
CVBH
VREF
LDi
x
SPB
CVBL
P1
P2
P3
P1
P2
P3
P1
P2
P3
SLB
SHB
BATL
BATH
RPMGi
RSLB
PMG
RSHB
CTESTB
*
AGND
IREF
TLD
R1
TLDEN
RREF
CTESTA
*
RREFS
KRi
(optional)
RGFDi
RREFSi
BGND
XSBi
XSC
+3.3 V
or 5 V
RSRBi
Ringing Bus
RTEST
*
RSRC
* Optional components.
Test Bus
NOTE: Connections are shown for one channel.
** Consult Legerity for an optimized protection recommendation.
32
Zarlink Semiconductor Inc.
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
