Panasonic KX-TG2873BXS

88
KX-TG2873BXS/KX-TGA280BXS
15 Appendix Information of Schematic Diagram
15.1. CPU Data (Base Unit)
15.1.1. BBIC (IC4)
PIN Description I/O High High_Z Low
1 Digital Source 3.0V VDD - - -
2 Digital GND DGN
D
-- -
3 Address bus D.O - - H
4 Address bus D.O - - H
5 Address bus D.O - - H
6 Address bus D.O - - H
7 Address bus D.O - - H
8 Address bus D.O - - H
9 Address bus D.O - - H
10 ANT diversity cont D.O - - O-HiZ
11 ANT diversity cont D.O - - O-HiZ
12 RF-PA ON: SW D.O ON OFF O-HiZ
13 Speaker output D.O ON OFF O-HiZ
14 Non use - - - O-HiZ
15 Non use - - - O-HiZ
16 Digital Source 1.8V +1.8
V
-- -
17 Digital GND DGN
D
-- -
18 RF_CLK D.O - - L
19 Digital Source 1.8V +1.8
V
-- -
20 Digital GND - - - -
21 10.368 MHz IN D.I - - I
22 Xtal ADJ-C D.I - - I
23 Analog GND AGN
D
-- -
24 1.8V +1.8
V
-- -
25 RSSI A.I - - I
26 RF recovery l input D.I - - I
27 Non use - - - I
28 RF_TX_DATA D.O - - Hi-Z
29 Address bus D.O - - H
30 Address bus D.O - - H
31 Address bus D.O - - H
32 Address bus D.O - - H
33 Address bus D.O - - H
34 Address bus Non
use
D.O - - H
35 Address bus D.O - - H
36 Address bus Non
use
D.O - - H
37 Address bus Non
use
D.O - - H
38 RF LOAD EN D.O - - L
39 RF serial DATA D.O - - Hi-Z
40 RF serial CLK D.O - - L
41 Non use D.I - - I
42 RF_TXRX_SW D.O TX RX O-HiZ
43 FROM_READ D.O - READ H
44 FROM_WRITE D.O - WRITE H
45 Non use D.O - - I-PU
46 Non use D.O - - H
47 UART TX_DATA D.O RUN BOOT I-PU
48 UART RX_DATA D.I - - I-PD
49 JTAG DATA i/f D.I - Debug
MODE
I-PU
50 key Scan D.I Non Key in I-PU
51 key Scan D.I Non Key in I-PU
52 key Scan D.I Non Key in I-PU
53 key Scan D.I Non Key in I-PU
54 key Scan D.I Non Key in I-PU
55 Digital Source 3.0V VDD - - -
56 Digital GND DGN
D
-- -
57 AC POW_Det. D.I AC_OFF AC_ON I-PU
58 HOOK Det. D.I HOOK-ON HOOK-
OFF
I-PU
59 IO_CS D.O - CS-on I-PU
60 ROM_CS D.O - CS-on H
61 EEPROM_Write
Protect
D.O Protect Write I-PU
62 key Scan D.I Non Key in I-PU
63 Ring Det. D.I - Ring-In O-H
64 Non use D.O - - O-H
65 Non use D.O - - O-H
66 EEPROM_Clock D.O - - O-H
67 EEPROM_data D.O - - I
68 Data bus I/O - - H
69 Data bus I/O - - H
70 Data bus I/O - - H
71 Data bus I/O - - H
72 Data bus I/O - - H
73 Data bus I/O - - H
74 Data bus I/O - - H
75 Data bus I/O - - H
76 DG DGN
D
-- -
77 Digital Source 1.8V +1.8
V
-- -
78 Digital Source 3.0V +3.0
V
-- -
79 KEYTONE A.O Analog Analog I
80 Line Hold Cont. D.O Open Hold I
81 Non use A.I - - I
82 Loop Current Det. A.I - - I
83 LCD_CLK:115.2kH
z
D.O - - I
84 LCD_DATA D.O - - I
85 Data bus I/O - - H
86 Data bus I/O - - H
87 Data bus I/O - - H
88 Data bus I/O - - H
89 Data bus I/O - - H
90 Data bus I/O - - H
91 Data bus I/O - - H
92 Data bus I/O - - H
93 Non use (Test
Mode pin)
D.I - - O-L
94 Loop Control D.O Line Open Loop
Close
O-HiZ
95 Power-ON Det. D.I Power-on - I-PD
96 Non use D.I - - I-PD
97 Non use A.O - - O-L
98 Non use D.I - - I
99 REF (0.9V) A.O - - O
100 TX Analog signal A.O Analog Analog O
101 CID Det. A.I Analog Analog I
102 RX Analog signal A.I Analog Analog I
PIN Description I/O High High_Z Low