CN8380EPF CONEXANT [Conexant Systems, Inc], CN8380EPF Datasheet - Page 88

• Manufacturer Part Number: CN8380EPF
• Description: integrated quad line interface unit unit for both 1.544 Mbps (T1) and 2.048 Mbps (E1) applications
• Manufacturer: CONEXANT [Conexant Systems, Inc]

B
Figure B-1. Minimum Hardware Configuration
Note(s):
(1) Optional programmable receive termination: 75/100/120
(2) Required fixed receive termination. The parallel combination of the fixed termination and programmable termination must match the line impedance.
(3) Optional fixed transmit termination. The value shown provides acceptable transmit return loss for T1 and E1 applications. (See
(4) Pins shown twice for Hardware Mode and Host Mode.
(5) In Hardware Mode, 5.6
line feed resistors are required. In Host Mode, they are optional.
Quad T1/E1
CN8394
Framer
Channel 2 Digital Interface
Channel 3 Digital Interface
Channel 4 Digital Interface
Hardware Mode
Host Mode
Oscillator
Channel 1 Digital
10 MHz
Interface
V
DD
NC
NC
NC 44
NC 45
NC
NC
NC
NC
NC 63
NC 64
NC
NC
NC 53
NC
NC
NC
NC
NC
NC
NC
114
123
119
108
115
127
128
65
48
43
46
49
62
50
47
34
33
35
73
42
37
36
38
42
44
43
45
1
4
HM
RESET
JDIR
JSEL(2)
JSEL(1)
JSEL(0)
UNIPOLAR
HTERM
PTS(2)
PTS(1)
PTS(0)
CLK_POL
IRQ
ZCS
RPOSO[1]
RNEGO[1]
RCKO[1]
RLOOP[1]
LLOOP[1]
RAWMD[1]
JATERR[1]*
RLOS[1]
TAIS[1]
TPOSI[1]
TNEGI[1]
TCLK[1]
SDO
SDI
SCLK
CS
CLADI
REFCKI
EACKI
TACKI
(4)
(4)
(4)
(4)
(4)
Quad T1/E1
(4)
(4)
CN8380
Host Mode
Serial Port
LIU
GNDT[1:4]
VAAT[1:4]
RRING[1]
XRING[1]
RTIP[1]
XTIP[1]
GNDCL
XOE[1]
VAACL
GNDR
VAAR
VDD
VGG
GND
VAA
VSS
71
72
66
67
68
470
470
Smoothing
150 pF
Capacitor
+3.3 V
Receive Termination
Programmable
Termination
Transmit
Fixed
21
(1)
(3)
Channel 2 Line Interface
Channel 3 Line Interface
Channel 4 Line Interface
Fixed Receive
Termination
Channel 1 Line Interface
100
0.1
(2)
Octal Transformer
Pulse – T1124
1:2
1:2
5.6
5.6
(5)
(5)
Mode Choke
Common
Table 2-7, Transmit Termination Option
Optional
RX
TX
RX
TX
BANTAM
RJ48C
or
D.)