JRC NT337-XL2, Instruction Manual

Page: 52 / 187

3-29
+ 5 V
Regu lator
0 /90
HY B × 2
0/0
BAL
UNB
L C ̲ B P F
21 3 .7 5 MH z
L C ̲ L P F
+ 5 . 0
L C ̲ B P F
+ 5 . 0
L C ̲ L P F
di git al
ATT
[15 dB]
UNB
BAL
- 3 . 3 V
+ 3 . 3 ̲ M O D + 3 . 3 ̲ D E M
+
5
V
+
1
6
V
+ 1 6V
t o R F U
Regulator
Regulator
0/0
0 /90
A S K
MO D EM
Interface part
PHY̲RST
(FROM̲AP-ASIC)
L2 SW̲RST
(FROM̲AP-ASIC)
TRANS
LAYER2
SW
RJ-4 5
RJ-4 5
TRANS
PHY
TRANS TRANS
2 5MH z
RS- 232 C
driver/re ceiver
4 p i n
M O JUR A
MAC
TDD
AP - AS I C
Digital part
U -C P U
15 .6 25
MH z
R eset
IC
TMP
SE NS
20 MH z
L VL C NT ̲T /R
+16V(RFU)
+3.3V(for AP/MODEM-ASIC,IF)
+2.5V(for AP-ASIC)
+1.8V(for U-CPU,D-CPU,L2SW)
+1.5V(for MODEM-ASIC)
+5V(for ANALOG ⇒3.3V)
CABLELOSSATT(ATT)
AP-IFU
+
2
.
5
V
+
3
.
3
V
+
1
.
8
V
+
3
.
3
V
MOD
DEM
M OD E M
AS I C
S - CP U
R T C
F R O M
6 4 M
s e r i a l
E E P R O M
3 2 × 8
S D R A M
8 M × 1 6
D -C P U
F R O M
1 6 M
S D R A M
8 M × 1 6
F R O M
1 6 M
S D R A M
8 M × 1 6
2 7. 83 MH z
TX
RX
D-FIFO
D-FIFO
EDC
2 .5M Hz
S̲R ST
[FR OM̲A P-A SIC]
D̲ RST
[F ROM̲ AP- ASIC ] U ̲RST
[ FROM ̲AP- ASI C]
MODE M-A SIC̲ RST
(FRO M̲S -CPU )
+
1
.
8
V
+
5
V
Re gulator
+3. 3̲AS IC
ANAL OG
+
1
.
5
V
TDD̲SELECT
IFU-MAC
( t o PC )
D C - 48 V
Pow
supply
conn.
P ower
supp ly
con nect or
10 0 B A S E -
T X
Pow
supply
conn.
IF part
SW
MO D̲ I/ Q
( BA L)
D EM ̲I /Q
( UN BA L)
to R F U
Serge protection
Serge protection
Serge protection
IFU-PS
Co a x a l
C AB L E
Figure 3-4 AP-IFU Block Diagram