Read Panasonic KX-TCD650RUC / KX-TCD650RUF Service Manual online
77 C
CIIR
RC
CU
UIITT O
OP
PE
ER
RA
ATTIIO
ON
N ((B
BA
AS
SE
E U
UN
NIITT))
Audio
Hook
Switch
Switch
16kHz
Filter
Filter
Bridge
Rect.
Rect.
A/D
D/A
Analog
Front End
Front End
Buzzer
CPU
HOOK
Ring
Det.
Det.
RXAF
TXAF
RING
CHARGE PULSE
DSP
BMC
Speech Encoding
Speech Decoding
RF
Interface
Interface
Burst Building
Burst Decoding
ADPCM
Codec Filter
Codec Filter
EEPROM
IC9
IC9
SUPEEP
SDA
SCL
SYRI
RSSI
ANT2
SYEN
SYEN
ANT1
RXDA
TXDA
J2
J1
PMB6725X
IC8
IC8
3.3V
Reg.
Reg.
2.65V
Reg.
Reg.
3.3V
2.65V
VUNREG
64
65
63
40
38
38
68
92
74
44
74
44
14
10
10
43
21
99
21
99
100
11
5
6
8
18
RF
Mod
Mod
20
11
12
1
35
17
12
1
35
17
44
37
CHARGE
CONTACT
CONTACT
30
28
XTAL
10.368
MHz
MHz
Fig. 17
MASK ROM
KX-TCD650RUC/RUF BLOCK DIAGRAM (BASE UNIT)
7
7..11.. TTH
HE
E B
BA
AS
SE
E--B
BA
AN
ND
D S
SE
EC
CTTIIO
ON
N
77..11..11.. IIN
NTTR
RO
OD
DU
UC
CTTIIO
ON
N ((S
SE
EE
E FFiigg.. 1177))
The base-band section consists of a base-band integrated circuit (BBIC), a Flash PROM and an EEPROM, clock generation,
locator key, factory serial port, buzzer circuit and audio paths both TX and RX.
locator key, factory serial port, buzzer circuit and audio paths both TX and RX.
77..11..22.. TTH
HE
E B
BA
AS
SE
E--B
BA
AN
ND
D IIN
NTTE
EG
GR
RA
ATTE
ED
D C
CIIR
RC
CU
UIITT ((B
BB
BIIC
C))
The PMB6725X (IC8) is a CMOS device designed to handle all the audio, signal and data processing needed in a DECT base
unit. It contains a "burst mode controller" which takes care of DECT specific physical layer and radio section control. It also
contains an ADPCM codec filter used for speech encoding and decoding in the DSP section, a general purpose microcontroller,
various other ADC´s, DAC´s, timers and power control circuitry.
The BBIC interfaces to its external PROM (IC5) via a data/address/control bus. It connects to the EEPROM via a serial
interface, and a second serial interface is used during manufacture and service to connect to an external computer.
unit. It contains a "burst mode controller" which takes care of DECT specific physical layer and radio section control. It also
contains an ADPCM codec filter used for speech encoding and decoding in the DSP section, a general purpose microcontroller,
various other ADC´s, DAC´s, timers and power control circuitry.
The BBIC interfaces to its external PROM (IC5) via a data/address/control bus. It connects to the EEPROM via a serial
interface, and a second serial interface is used during manufacture and service to connect to an external computer.
12
KX-TCD650RUC / KX-TCD650RUF
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