BBK DK2810HD, Service Manual

Page: 72 / 132

- 68 -
8 DQ4 Data bus I/O 35 MA11 Address bus I
9 VDDQ 3.3V power supply 36 NC Blank
10 DQ5 Data bus I/O 37 CKE Clock enable signal I
11 DQ6 Data bus I/O 38 CLK System clock input I
12 VSSQ Ground 39 UDQM
Data input/output
screen-shielded signal
I
13 DQ7 Data bus I/O 40 NC Blank
14 VDD 3.3V power supply 41 VSS Ground
15 LDQM
Data input/output screen-shielded
signal
I 42 DQ8 Data bus I/O
16 WE Write control signal I 43 VDDQ 3.3V power supply
17 CAS Line address gating signal I 44 DQ9 Data bus I/O
18 RAS Row address gating signal I 45 DQ10 Data bus I/O
19 CS Chip selection signal I 46 VSSQ Ground
20 SD-BS0 Segmanr address 0 gating signal I 47 DQ11 Data bus I/O
21 SD-BS1 Segmanr address 1 gating signal I 48 DQ12 Data bus I/O
22 MA10 Address bus I 49 VDDQ 3.3V power supply
23 MA0 Address bus I 50 DQ13 Data bus I/O
24 MA1 Address bus I 51 DQ14 Data bus I/O
25 MA2 Address bus I 52 VSSQ Ground
26 MA3 Address bus I 53 DQ15 Data bus I/O
27 VDD 3.3V power supply 54 VSS Ground
3.5.5 function introduction to
AM5888S
1. Description
The AM5888S is a five-channel BTL driver IC for driving the motors and actuators such as used in DVD
player and consists of two independent precision voltage regulators with adjustable range from 1.5V to 4 V. It
supports a variety of applications. Also, Pb free package is selectable (Please refer to Marking Identification).
2. Fetures
◆
Two channels are voltage-type BTL drivers for actuators of tracking and focus. Two channels are
voltage-type BTL driver for sled and spindle motors. It is also built-in one channel bi-direction DC motor driver
for tray.
◆
Wide dynamic range [9.0V ( typ. ) when Vcc1= Vcc2= 12V, at RL= 20¦
¸
load].