BBK DK1020S - Page 77

Pin Name Function
Voltage
(when no
disc)
Data
direction
28 OE Output enable signal , low level is effective 0V I
29-3 6 38-44
DQ0-
DQ14
15 bit data bus O
37 VCC 5V power supply +5V
45 DQ15/A-1
Take word extend mode as data line, and bit extend mode as
address line
I/O
47 BYTE
Select 8-bit or 16-bit output mode. High level is 16-bit output and
low level is 8-bit output
I
Pin Name Function
Voltage when
no disc (V)
DVD disc
voltage (V)
CD disc
voltage (V)
1 VINFC Focus control signal input 1.41 1.4 1.45
2 CF1 External feedback loop 2.3 2.54 2.43
3 CF2 External feedback loop 2.01 2.56 2.43
4 VINSL+
Forward control input, connected to reference
voltage
1.41 1.42 1.42
5 VINSL- Main axis control signal input 1.4 1.42 1.42
6 VOSL External feedback resistor 1.4 1.17 1.21
7 VINFFC Focus feedback signal input 1.92 2.59 2.36
8 VCC 5V power supply 5.38 5.04 5.01
9 PVCC1 5V power supply 5.38 5.04 5.03
10 PGND Ground 0.01 0.01 0.01
11 VOSL- Main axis drive reverse voltage output 1.87 3.71 3.54
12 VO2+ Main axis drive forward direction voltage output 1.87 1.24 1.4
13 VOFC- Focus drive reverse voltage output 3.3 2.6 2.33
14 VOSC+ Focus drive forward voltage voltage output 3.3 2.46 2.68
15 VOTK+ Trace drive forward direction voltage output 3.39 2.56 2.51
16 VOTK- Trace drive reverse voltage output 3.52 2.48 2.51
17 VOLD+ Feed drive forward direction voltage output 0.93 2.56 2.5
18 VOLD- Feed drive reverse voltage output 0.93 2.59 2.62
19 PGND Ground 0.01 0.01 0.01
20 VINFTK Trace feedback signal input 3.73 2.5 2.53