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Pin
Description
No
64
VBAT2
65
VBAT1
66
AVS2
67
AVD2
68
LSR+/REF
69
LSR-/REF
70
LSR_HS/CIDIN-
71
VREF_HS/CIDOUT
72
MIC-
73
VREF-
74
VBUF
75
AGND
76
MIC+
77
VREF+/CIDIN+
78
RSTN
79
VDDIO
80
VSS
Note:
JACK DETECTION; Detect if a Headset is inserted into the JACK or not. Without a
Headset, 1.5V is measured at pin 23, while with a Headset, 0V is measured at pin 23.
28. EEPROM LAYOUT (BASE UNIT)
28.1. Scope
The purpose of this section is to describe the layout of the EEPROM (IC3) for the KX
-TCD540 Base Unit.
The EEPROM contains hardware, software, and user specific parameters. Some
parameters are set during production of the base e.g. crystal frequency adjustment
at address 0286, some are set by the user configuration e.g. ringer volume at
address 02C5, and some are set during normal use of the phone e.g. Caller ID data
at address 096A..0FDB.
I/O
Connection
A,I
A,I
-
-
A,O
LSR+
A,O
LSR-
A,O
LSR_HS
A,O
NC
A,I
A,O
A,O
A,O
A,I
A,O
VREF+
D,I
-
-
129
at Normal mode
I
I
-
-
-
-
O
O
O
OPEN
I
O
O
O
I
O
I
-
-
-
-
at Reset mode
O
O
-
-
O
O
O
-
O
O
O
O
O
O
O
-
-
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