11
KX-NS500AG
4.3.
Expansion Unit
The expansion unit is constructed by CPU Board (SPR) and Mother Board. The block diagram and operation of each card are
described here.
4.3.1.
CPU Board (SPR)
Fig.4 shows detail block diagram of CPU Board (SPR), and each function of CPU Board (SPR) is described in Table.6.
Table.6 CPU Board (SPR) Function Description
Card
Description
CPU
CPU controls the line card in the expansion unit by the control from an CPU Board (MPR).
DDR3
DDR3 is main memory of CPU Board (SPR). Operating system, application program and concerning data are
stored in this memory.
NAND Flash
CPU program is stored in this memory.
FPGA
FPGA provides control and monitoring function of each line card.
A
RM
Cortex-
A
8
300MH
z
L1 3
2
K/3
2
K
w
/
S
ED
L
2 2
5
6
K
w
/ECC
1
76
K ROM
6
4K R
A
M
6
4K R
A
M
Crypto
DDR
Inter
fa
ce
DDR3
1
2
8MB
N
A
ND
N
A
ND
FL
AS
H
2
5
6
MB
U
A
RT
S
D
GPIO
Interrupt
etc.
DC/DC(+3.3
V
,+1.8
V
,+1.1
V
)
A
C_
A
LM, DC_
A
LM,
S
yste
m
Reset, FPG
A
_REBOOT, DONE
S
l
a
ve
FPG
A
LED
+5
V
Extern
a
l bus
80
P
IN
C
O
N
NE
C
T
O
R
(C
PU
In
te
r
fa
ce)
S
T
A
TU
S
DC/DC
+3.3
V
+15
V
8bit
8bit
+5
V
+
V
B
A
T
L
V
D
S
Do
w
n
Hi
g
h
wa
y
Up
Hi
g
h
wa
y
FH+CLK
(8MH
z
)
Interrupt
Exp I/F
R
J
45
NETREF
Exp
a
nsi
on
bu
s
Fi
g
.4 CPU Bo
a
rd (
S
PR) Bloc
k
Di
ag
r
am
Summary of Contents for KX-NS500AG
Page 21: ...21 KX NS500AG 5 Location of Controls and Components 5 1 Name and Locations ...
Page 24: ...24 KX NS500AG 9 1 1 Startup ...
Page 25: ...25 KX NS500AG ...
Page 26: ...26 KX NS500AG ...
Page 27: ...27 KX NS500AG ...
Page 28: ...28 KX NS500AG 9 1 2 Battery Alarm ...
Page 29: ...29 KX NS500AG 9 1 3 Using Voice Mail ...
Page 30: ...30 KX NS500AG Using Voice Mail continued ...
Page 34: ...34 KX NS500AG 9 2 3 41V are Not Output Only 15V is output ...
Page 35: ...35 KX NS500AG 9 2 4 Battery Backup Function Does Not Operate PSU can Not Charge Batteries ...
Page 43: ...43 KX NS500AG 11 3 3 Power Supply Board ...
Page 59: ...59 KX NS500AG 12 2 Memo ...
Page 73: ...73 KX NS500AG 12 5 Memo ...
Page 131: ...131 KX NS500AG 16 Appendix ...
