Panasonic KX-T7633, Service Manual

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Pin No. I/O Setting Pull-up
Processing
Contents of Control Remark
28 NROW0 out - LED row drive 0
29 VDD - - Digital power supply
30 OEP tri - Channel pulse
31 OSX tri - 2.048MHz serial data output
32 OSR in Built-in 2.048MHz serial data input
33 OSYNC bi - 8Khz frame synchronized
signal
34 OCK2M bi - 2.048MHz serial clock
(Schmitt)
35 OCK4MN tri - 4.096MHz serial clock
36 OP0 out - Optional reset output 1
37 OP1 out - Optional reset output 2
38 OP2 out - Codec serial data output
39 OP3 out - Codec serial clock output
40 GND - - Digital ground
41 VDD - - Digital power supply
42 AG - - Analog ground (For D/A)
43 VREFO out - Analog reference voltage
44 SPOP out - + Side of output for handset
SP Amp
45 SPON out - - Side of output for handset
SP Amp
46 SPI in - Input for handset SP
47 AVDD - - Digital power supply
48 GND - - Digital ground
49 PCK4MN tri - 4.096MHz serial clock
50 PSX tri - 2.048MHz serial data output
51 PSYNC tri - 8Khz frame synchronized
signal
52 PSR in Built-in 2.048MHz serial data Input
53 PCK2M tri - 2.048MHz serial clock
54 PEP/SCLK tri - Channel pulse/Serial clock
55 OP4 out - CO7 green LED control port H:LEDON
56 OP5 out - CO7 red LED control port H:LEDON
57 OP6 out - DXDP constant current
switching port H:40mA, L:20mA
58 OP7 out - DXDP constant current
control port H:Constant current
circuit ON
59 VDD - - Digital power supply
60 DVRL in - Reference voltage for
comparator (For DXDP)
61 DDR in - Receive data input (For
DXDP)
62 DVRH in - Reference voltage for
comparator (For DXDP)
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