Termcpu (16P0209A) - Furuno FS-1575 Service Manual

1. TERMCPU (16P0209A)

TxD1
RxD1
TxD2
RxD2
Add.
Data
Ethernet
CONT
LCD controller
IRL-1
I/O controller
IRL-0
15.5MHz
EXTAL
VSYNC
Reset
Reset
(CPU Reset)
ASEMODE
S5-4
(For De-bug)
Memory contents
The contents of each memory are as listed in the table shown below:
U3 and U4: S-RAM (Backup)
• AAB/ID
• USER CH
• Station List
• Scan Group
• Timer OP
• System data
CONFIDENTIAL (internal use only)
This confidential document is used only by FURUNO authorized persons.
It is strictly prohibited to reproduce the document in whole or in part without prior written permission of FURUNO.
Reset
U5
Reset
(BATT Backup)
BT1
IRL-1
VSYNC
HSYNC
LCD
DE
U12:
(LCD CONT)
15.5MHz
Fig. 7.10.4 TERMCPU Board Block Diagram
Memory Contents
7-99
CR2
Power ON
IRL-0 PD
IRL
Add.
FDD
Key
CLK1
Data
XTAL1
(I/O Reset)
IRL
Add.
25MHz
Data
15.5MHz
Reset
(LCD Reset)
DD
DISP
S4-4
MD MA
U22
(16Mbit D-RAM)
U23
(16Mbit D-RAM)
Table 7.10.4 Memory Contents
U14: Flash ROM
Programs
(Including ITU-CH table)
7.10 NBDP Terminal
J3
DTE
J1
Printer
J9
FDD
J5
Keyboard
14.318MHz
32.768MHz
(Real time CLK)
Not used
J7
10BASE-T
Note)
No DIP switch is used.