NEC PASOLINK Training Course page 24

ROI-S04488
a
b
c
d
e
From/To
f
FIG. 2-2 (1/4)
g
h
w
x
EOW
IN/OUT
LAN INTFC *
10 BASE-T PORT1
ETHERNET SW
100 BASE-TX
PORT2 SPEED CONV
i
j
k
l
m
From/To
FIG. 2-2 (1/4)
n
o
p
v
t
u
WS/SC LAN
WS/SC LAN INTFC *
IN
B-U CONV/DPU
OUT
U-B CONV/DPU
(RJ45)
OW/DSC/ASC
ASC/DSC/ALM INTFC *
IN
A-D CONV/
LEV CONV
OUT
DSC/64K/
ASC/EOW
64K/SC LAN INTFC *
IN
B-U CONV/DPU
U-B CONV/DPU
OUT
RX SW CONT
From FIG. 2-2 (4/4) 6
Note: * Optional.
From/To FIG. 2-2 (4/4)
TX CLK LOSS
2 1
H
H
H
H
H
H
CLK MON
H
H
RX
SW
H
RX
SW
H
SW
RX SW/
HL SW
CLK MON
H
SW
H
H
RX
SW
4 3
To RX SW
RX CLK LOSS
From/To FIG. 2-2 (4/4)
Fig. 2-2 Functional Block Diagram of IDU in 1+1 System (2/4)
SW UNIT
P-S
CONV
MUX
PLS MON
TX FPLS
TIM
TX CLK
GEN
PCM
CODEC
SERIAL ALM
g
From/To
FIG. 2-2 (1/4) F SYNC ALM
s
AIS CTRL
y
RX FPLS
12M CLK
RX CLK
S-P
CONV
DEMUX
No. 1 MD UNIT
DPU
MDP
D-A
SCRB
CONV
4 PH
DIF DIG
MOD
ENC FIL
PARITY
D-A
CHECK
CONV
PLS
MON
850 MHz
VCO
MST
CLK
MON
BER
DET
DEM
A-D
TIM
F SYNC CONV
GEN
4 PH
DEM
DIF
A-D
DSCRB
DEC
CONV
70 MHz
No. 2 MD UNIT
(SAME AS ABOVE)
FUNCTIONAL OPERATION
MPX
IF IN/OUT
DATA UP
A
MOD
DATA DOWN
DEM B
EOW
DEM
–43 V DC EOW
MOD
450 kHz
CPU CLK
C
TX DPU ALM
D
MOD ALM
E
MUX ALM 1-4
From/To
SERIAL ALM
FIG. 2-2 (3/4)
L BER ALM SYS ALM
P-S
F
H BER ALM
CONV
F SYNC ALM
BER ALM
MOD CW
AIS CTRL OFF
SYS CTRL
S-P
G
CONV
BER THRESHOLD
FRAME ID
DEM ALM
H
F SYNC ALM
I
BER ALM
J
IF IN/OUT
DATA UP
K
DATA DOWN
L
CPU CLK
M
TX DPU ALM
N
MOD ALM From/To
O
FIG. 2-2 (3/4)
SYS ALM
P
SYS CTRL
Q
DEM ALM
R
F SYNC ALM
S
BER ALM
T
2-11/12