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INTERNAL BLOCK DIAGRAM OF ICs
I LA1837




I BA3126N




1 2 3 4 5 6 7 8 9
REC SW GND P/B SW CONT GND VCC P/B SW GND REC SW

I KIA6225P/S




- 2-30 -
I KIA7805 P/PI ~ KIA7815 P/PI




I BU1923(FOR RDS/RBDS)




- 2-31 -
I BU2090F
Block diagram



Vss 1 Control circuit 16 VDD

DATA 2 15 Q11
12-bit shift register
CLOCK 3 14 Q10
Latch
Q0 4 13 Q9
Output buffer
(open drain)
Q1 5 12 Q8

Q2 6 11 Q7

Q3 7 10 Q6

Q4 8 9 Q5




PIN DESCRIPTION

Pin No.
Pin name Function
BU2090/F/FS BU2092/F BU2092/FV
1 1 1 Vss GND
2 2 2 DATA Serial data input
3 3 3 CLOCK Data shift clock input
- 4 4 LCK Data latch clock input
4 5 5 Q0 parallel data output
5 6 6 Q1 parallel data output
6 7 7 Q2 parallel data output
7 8 8 Q3 parallel data output
8 9 9 Q4 parallel data output
9 10 10 Q5 parallel data output
10 11 11 Q6 parallel data output
- - 12 N.C. Not connected
- - 13 N.C. Not connected
11 12 14 Q7 parallel data output
12 13 15 Q8 parallel data output
13 14 16 Q9 parallel data output
14 15 17 Q10 parallel data output
15 16 18 Q11 parallel data output
- 17 19 OE Output Enable
16 18 20 VDD Power supply




- 2-32 -
I TDA7265

+VS


1000