參數(shù)資料
型號(hào): AM79D2251VC
廠商: ADVANCED MICRO DEVICES INC
元件分類: 編解碼器
英文描述: Dual Intelligent Subscriber Line Audio-Processing Circuit (ISLAC)
中文描述: PCM CODEC, PQFP44
封裝: PLASTIC, TQFP-44
文件頁數(shù): 11/35頁
文件大?。?/td> 410K
代理商: AM79D2251VC
Am79D2251
11
Figure 4. Internal Ringing Linecard Schematic
RFAi
RFBi
RSAi
RSBi
A
B
U3
DHi
BATH
BATL
U1
Am79R241
P1
P2
P3
LD
SA
SB
AD
BD
VBH
VBL
TMP
TMN
RSN
VLB
IMT
ILG
VTX
VREF
VSAB
GND
+5 V
VCC
CBATLi
CBATHi
* CSS required for > 2.2 Vrms metering
** Connections shown for one channel
*** DT2i diode is optional - should be
connected if there is a chance that this chip
may be replaced by Am79R251.
DLi
RMGLi
RMGPi
TMS
BGND
R2
RYE
R3
R1
BATH
HPA
HPB
RTESTLi
CHPi
CSSi
RRXi
RMTi
VREF
RLGi
VREF
U2
ISLAC
VREF
VILGi
VIMTi
VLBi
VSABi
VINi
VOUTi
BACK
PLANE
LDi
P1
P2
P3
DGND
VCCA
VCCD
SHB
SLB
BATH
BATL
IREF
AGND
VCC
+3.3VDC
RSHB
RSLB
RREF
CREF
3.3 V
CADi
CBDi
RSVD
RSVD
RTi
D1
D2
U4
CS
RTESTMi
DT1i
DT2i
***
SPB
RHLai
VHLi
RHLbi
RHLci
RHLdi
CHLdi
VREF
CHLbi
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