User guide

CDB5451A
12 DS458DB3
SDO
SCLK
FSO
SE
/GAI N
/RESET
OWRS
GND
SW_B3W_1100
S1
R35 10K R34 10K
D+
D+
470
R11
10KR5
4. 7KR14
R8
470
GND
GND
.1UFC43
GND 1Y4 1Y3 1Y2 1Y1
1A4 1A3 1A2 1A1
VCC 1/ G
20 18 16 14 12 10
8 6 4 2 1
SN74HC240N
U8
B A CLK /CLR
GND
QG QF QE QD QC QB QA
VCC
14 13 12 11 10
9 8
7 6 5 4 3
2 1
SN74HC164N
U7
.1UF C4
2Y4 2Y3 2Y2 2Y1
2A4 2A3 2A2 2A1 2/ G
17 15 13 11 9
7 5 3
19
U8
SN74HC240N
D+
GND
COG C45 220PF
QB
DAT A B
QA CD CU QC QD
GND
VCC
DAT A A
CLR
BORROW
CARRY
LOAD
DAT A C DAT A D
16 15 14 13 12 11 10 9
8 7 6 5 4 3 2 1
MM74HC193N
U6
GND
D+
FSO
4. 7KR12
10KR4
GND
SE
4. 7K
R15
470
R7
GND
GND
R9
470
SDO
470
R10
SCLK
D+
GND
8Q 7Q
8D 7D
GND VCC
1Q 2Q 3Q 4Q 5Q 6Q6D
5D 4D 3D 2D 1D CLK /OC
2 5 6 9 12 15 16 19 20 10
18 17 14 13 8 7 4 3 11 1
SN74HC374N
U3
4. 7K
R13
10KR1
D+
D+
C44.1UF
2 1
OP E N
SW_DI P_2
SW1
R16 10K
GND
D+
10KR33
/GAI N
OWRS
.1UFC3
.1UFC46
20K
R36
GND
/RESET
D+
GND
1413 1211 109 87 65 43 21
HDR 7 X 2
HDR 1 9
49. 9
R37
GND
D+
25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
DB25M_RA
J17
GND
ACK
SEL
BUSY
INIT
10KR6
STRB FEED
Figure 3. Digital Circuitry