Panasonic KX-FHD333BR Service Manual page 122

KX-FHD333BR
8.3.4. FLASH MEMORY (IC523)
The 512KB ROM (FLASH MEMORY) carries a common area of 32KB and bank areas which each have 8KB (BK4~BK63). The
addresses from 0000H to 7FFFH are for the common area and from 8000H to 9FFFH are for the bank areas.
8.3.5. DYNAMIC RAM (IC503)
The DRAM serves as CPU and receives memory.
The address is F200H~F3FFH (DRAM access window 1) and F600H~F7FFH (DRAM access window 2).
Descriptions of Pin Distribution (IC501)
NO.
1 VSSA
2 VDDA 3.3
3 AIN1
4 AIN2
5 AIN3
6 AMON
7 VSS
8 X32OUT
9 X32IN
10 VDD (3.3V / B)
11 XBACEN
12 XRAMCS
13 VDD (3.3V / B)
14 VDD (2.5V/B)
15 FTG
16 F1
17 F2/OP
18 FR/OP
19 CPC
20 RVN
21 IRDATXD/IOP
22 IRDARXD/IOP80
23 TXD/IOP
24 RXD/IOP
25 XRTS/IOP
26 XCTS/IOP
27 VDD (2.5V)
28 TONE1
29 TONE2
30 VOLUREF
31 VOLUOUT
32 VOLUIN
33 XNMI
34 FMEMDO/IOP
35 VDD (3.3V)
36 VSS
37 VSS
38 VDD (3.3V)
39 MIDAT/IOP
40 MICLK/IOP
41 MILAT/IOP
42 20KOSC/IOP
43 XWAIT
44 HSTRD/IOP
45 HSTWR/IOP
46 XOPRBE
47 ADR15
48 ADR14
49 ADR13
50 VDD (2.5V)
51 XOUT
52 XIN
53 VSS
54 VDD (3.3V)
55 XTEST
56 TEST1
SIGNAL I/O
A
A
A
A
O
I
I
O
O
O
O
O
I
I
O
I
I
O
I
O
A
A
A
A
A
I
O
O
O
O
I
I
O
O
O
O
O
O
O
I
O
I
POWER SUPPLIED
VOLTAGE
GND POWER SOURCE (ANALOG GND)
3.3V POWER SOURCE (ANALOG +3.3V)
3.3V CCD IMAGE SIGNAL INPUT
3.3V THERMISTOR TEMPERATURE WATCH INPUT
3.3V
3.3V ANALOG SIGNAL MONITOR TERMINAL
GND POWER SOURCE (GND)
3.3V/BATT RTC (32.768KHz) CONNECTION
3.3V/BATT RTC (32.768KHz) CONNECTION
----- POWER SOURCE (+3.3V/LITHIUM BATTERY)
3.3V/BATT BACKUP ENABLE
3.3V/BATT NOT USED
----- POWER SOURCE(+3.3V / LITHIUM BATTERY)
----- POWER SOURCE (+2.5V / LITHIUM BATTERY)
3.3V SH SIGNAL OUTPUT FOR CIS (SI)
3.3V 01 SIGNAL OUTPUT FOR CIS (CLK)
3.3V OUTPUT PORT (HSTXMUTE)
3.3V OUTPUT PORT (MDMRST)
3.3V INPUT PORT (PTOP)
3.3V INPUT PORT (REED)
3.3V OUTPUT PORT (CISLED)
3.3V INPUT PORT (DSR)
3.3V INPUT PORT (TXD)
3.3V OUTPUT PORT (SENLED1)
3.3V INPUT PORT (HOOK)
3.3V OUTPUT PORT (SPMUTE)
3.3V POWER SOURCE (+2.5V)
3.3V TONE OUTPUT
3.3V TONE OUTPUT
3.3V ANALOG REF VOLTAGE
3.3V VOLUME OUTPUT
3.3V VOLUME INPUT
3.3V HIGH FIXED
3.3V OUTPUT PORT (ON-MREN)
----- POWER SOURCE (+3.3V)
GND POWER SOURCE (GND)
GND POWER SOURCE (GND)
----- POWER SOURCE (+3.3V)
3.3V OUTPUT PORT (TONE1EN)
3.3V OUTPUT PORT (CISON)
3.3V OUTPUT PORT (OPERESET)
3.3V INPUT PORT (BELL)
3.3V INPUT PORT (KOVER)
3.3V NOT USED
3.3V NOT USED
3.3V MFCS
3.3V CPU ADDRESS BUS 15 (NOT USED)
3.3V CPU ADDRESS BUS 14 (NOT USED)
3.3V CPU ADDRESS BUS 13 (NOT USED)
----- POWER SOURCE (+2.5V)
3.3V SYSTEM CLOCK (24MHz)
3.3V SYSTEM CLOCK (24MHz)
GND POWER SOURCE (GND)
----- POWER SOURCE (+3.3V)
3.3V 24MHz CLOCK
3.3V HIGH FIXED
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DESCRIPTION
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