Operating Board - Grundig RR 300 CD Bedienungsanleitung

Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
Bedienplatte / Operating Board
3 - 11
RR 300 CD Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
zu CN101 S. 3-3
to CN101 P. 3-3
GRUNDIG Service 3 - 12
TMP47422F PIN FUNCTION
PIN NAME Input/Output FUNCTION
R43 (AIN3/SEG19) to I/O
R40 (AIN0/SEG16) (I/O)
P51,P50 Output 4-bit I/o ports with latch (p5 port has
R63 (SEG15) to I/O(Output) only 2-bit).
R60 (SEG12) These ports can be set, cleared and
R73 (XTOUT) I/O(Output) tested for each bit as specified by
R72 (XTIN) I/O(Input) L-register indirect addressing bit
R71 (PULSE) I/O(Output) manipulation instruction.
R70 I/O
R83 (T1)
R82 (INT1/ZIN) I/O 4-bit I/O ports with latch
R81 (T2) (Input)
R80 (INT2)
R92 (SCK) I/O(I/O)
R91 (SO) I/O(Output) 3-bit I/O ports with latch
R90 (SI) I/O(Input)
SEG11 to SEG0 output LCD segment drive output
COM4 to COM1 LCD common drive output
XIN Input Resonator connecting pins (High-frequency).
XOUT Output For inputting external clock ,XIN is used and XOUT is opened
RESET Input Reset signal input
HOLD (KE0) I/O (Input) HOLD request/release signal input
VDD (VAREF) +5V
VSS Power supply 0V(GND)
VLC LCD drive power supply
33 30 29 28 27 26 25 24 23
32 31
VLC
34
COM1 35
COM2 36
COM3 37
COM4 38
TMP47422F PIN ASSIGNMENTS
VDD
39
40
SEG0
SEG1 41
SEG2
42
SEG3
43
SEG4 44
5 8
1 2 3 4 6 7 9 10 11
RR 300 CD
A/D converter analog input
/LCD segment drive output
(Note)
LCD segment drive output
Resonator connecting pins
(Low-frequency).
Pulse output
Timer / Counter1 external input
External interrupt1 and zero-cross input
Timer / Counter2 external input
External interrupt2 input
Serial clock I/O
Serial data output
Serial data input
sense input
A/D converter analog reference voltage
22 R81 (T2)
21
R80 (INT2)
20
R73 (XOUT)
19
R72 (XTIN)
18
R71 (PULSE)
17 R70
16 VSS
15
R43 (AIN3/SEG19)
14
R42 (AIN2/SEG18)
13
R41 (AIN1/SEG17)
12 R40(AIN0/SEG16)
GRUNDIG Service