Samsung SCX-5312F - Page 120

3-3
Samsung Electronics
CIRCUIT DESCRIPTION
Repair Manual
3-2-3 RISC MICROPROCESSOR
1) RISC MICROPROCESSOR PIN & INTERFACE
No Pin Name I/O Reset Value Description PAD
1 DATA0 I/O Input CPU Data Bus 0 PHBTT8, 8 mA
2 DATA1 I/O " CPU Data Bus 1 "
3 DATA2 I/O " CPU Data Bus 2 "
4 DATA3 I/O " CPU Data Bus 3 "
5 Vsso Vss - 5VGnd
6 DATA4 I/O Input CPU Data Bus 4 PHBTT8, 8 mA
7 Vddo Vdd - 5V
8 DATA5 I/O Input CPU Data Bus 5 PHBTT8, 8 mA
9 DATA6 I/O " CPU Data Bus 6 "
10 DATA7 I/O " CPU Data Bus 7 "
11 DATA8 I/O " CPU Data Bus 8 "
12 Vssi Vss - 3.3 V Gnd
13 DATA9 I/O Input CPU Data Bus 9 PHBTT8, 8 mA
14 Vddi Vdd 3.3 V
15 DATA10 I/O Input CPU Data Bus 10 PHBTT8, 8 mA
16 DATA11 I/O " CPU Data Bus 11 "
17 DATA12 I/O " CPU Data Bus 12 "
18 DATA13 I/O " CPU Data Bus 13 "
19 Vsso Vss - 5VGnd
20 DATA14 I/O Input CPU Data Bus 14 PHBTT8, 8 mA
21 DATA15 I/O " CPU Data Bus 15 "
22 DATA16 I/O " CPU Data Bus 16 "
23 DATA17 I/O " CPU Data Bus 17 "
24 Vsso Vss - 5VGnd
25 DATA18 I/O Input CPU Data Bus 18 PHBTT8, 8 mA
26 DATA19 I/O " CPU Data Bus 19 "
27 DATA20 I/O " CPU Data Bus 20 "
28 DATA21 I/O " CPU Data Bus 21 "
29 Vddi Vdd - 3.3 V
30 DATA22 I/O Input CPU Data Bus 22 PHBTT8, 8 mA