6-1
DVP-FX921/FX921K/FX930/FX930CC/FX930WM/FX935
SECTION 6
IC PIN FUNCTION DESCRIPTION
6-1. MPEG/DSP/RF PIN FUNCTIOM (MAIN BOARD U6: MT1389LP)
Pin No.
Name
I/O
Description
1
RFA
I
RFA Analog Input RF main beam input A
2
RFB
I
RFB Analog Input RF main beam input B
3
RFC
I
RFC Analog Input RF main beam input C
4
RFD
I
RFD Analog Input RF main beam input D
5
RFE
I
RFE Analog Input RF sub beam input E
6
RFF
I
RFF Analog Input RF sub beam input F
7
AVDD18
-
AVDD18_2 analog power (Analog 1.8V power)
8
AVDD133
-
AVDD33_1 analog power (Analog 3.3V power)
9
XTALI
I
XTALI input (27MHz crystal input)
10
XTALO
O
XTALO output (27MHz crystal output)
11
AGND
-
AGND33 analog ground
12
V20
O
V20 analog output (Reference voltage 2.0V)
13
V14
O
V14 Analog output (Reference voltage 1.4V)
14
REXT
I
Current reference input. It generates reference current for RF path.
15
MDI1
I
Laser power monitor input
16
MDI2
I
Laser power monitor input
17
LDO1
O
Laser driver output
18
LDO2
O
Laser driver output
19
AVDD33
-
Analog 3.3V power
20
DMO
O
Disk motor control output. PWM output.
21
FMO
O
Feed motor control. PWM output.
22
TRAY_OPEN
O
Tray PWM output. Tray open output.
23
TRAY_CLOSE
O
Tray PWM output. Tray close output.
24
TRO
O
Tracking servo output. PDM output of tracking servo compensator.
25
FOO
O
Focus servo output. PDM output of focus servo compensator.
26
FG/GPIO2
I
Motor hall sensor input
27
USB_DP
I
USB port DPLUS analog pin
28
USB_DM
I
USB port DMINUS analog pin
29
USB_V33
-
Digital IO power 3.3V
30
USB_GND
-
Digital IO ground
31
PAD_VRT
GPIO2
32
USB_V18
-
Digital core power 1.8V
33
GPIO3/INT#
O
General purpose IO 3
34
GPIO4
I/O
General purpose IO 4
35
GPIO6
O
General purpose IO 6
36
SF_CS_
I/O
SF_CS_
37
SF_DO
I/O
Serial flash data out
38
SF_DI
I/O
Serial flash data in
39
SF_CK
I/O
Serial flash clock
40
UP1_6/SCL
I/O
I2C clock pin
41
UP1_7/SDA
I/O
I2C data pin
42
ICE
I
Microcontroller ICE mode enable
43
PRST#
I
Power on reset input, active low
44
IR
I
IR control signal input
45
RD0
I/O
DRAM data 0
46
RD1
I/O
DRAM data 1
47
RD2
I/O
DRAM data 2
48
RD3
I/O
DRAM data 3
49
RD4
I/O
DRAM data 4
50
DVDD33
-
3.3V power pin for internal digital circuitry
51
RD5
I/O
DRAM data 5
52
RD6
I/O
DRAM data 6
53
RD7
I/O
DRAM data 7