Ic Pin Function Description; Mpeg/Dsp/Rf Pin Functiom (Main Board U6: Mt1389Lp) - Sony DVP-FX921 Service Manual

6-1.

MPEG/DSP/RF PIN FUNCTIOM (MAIN BOARD U6: MT1389LP)

Pin No. Name
1 RFA
2 RFB
3 RFC
4 RFD
5 RFE
6 RFF
7 AVDD18
8 AVDD133
9 XTALI
10 XTALO
11 AGND
12 V20
13 V14
14 REXT
15 MDI1
16 MDI2
17 LDO1
18 LDO2
19 AVDD33
20 DMO
21 FMO
22 TRAY_OPEN
23 TRAY_CLOSE
24 TRO
25 FOO
26 FG/GPIO2
27 USB_DP
28 USB_DM
29 USB_V33
30 USB_GND
31 PAD_VRT
32 USB_V18
33 GPIO3/INT#
34 GPIO4
35 GPIO6
36 SF_CS_
37 SF_DO
38 SF_DI
39 SF_CK
40 UP1_6/SCL
41 UP1_7/SDA
42 ICE
43 PRST#
44 IR
45 RD0
46 RD1
47 RD2
48 RD3
49 RD4
50 DVDD33
51 RD5
52 RD6
53 RD7
DVP-FX921/FX921K/FX930/FX930CC/FX930WM/FX935
SECTION 6

IC PIN FUNCTION DESCRIPTION

I/O
I RFA Analog Input RF main beam input A
I RFB Analog Input RF main beam input B
I RFC Analog Input RF main beam input C
I RFD Analog Input RF main beam input D
I RFE Analog Input RF sub beam input E
I RFF Analog Input RF sub beam input F
- AVDD18_2 analog power (Analog 1.8V power)
- AVDD33_1 analog power (Analog 3.3V power)
I XTALI input (27MHz crystal input)
O XTALO output (27MHz crystal output)
- AGND33 analog ground
O V20 analog output (Reference voltage 2.0V)
O V14 Analog output (Reference voltage 1.4V)
I Current reference input. It generates reference current for RF path.
I Laser power monitor input
I Laser power monitor input
O Laser driver output
O Laser driver output
- Analog 3.3V power
O Disk motor control output. PWM output.
O Feed motor control. PWM output.
O Tray PWM output. Tray open output.
O Tray PWM output. Tray close output.
O Tracking servo output. PDM output of tracking servo compensator.
O Focus servo output. PDM output of focus servo compensator.
I Motor hall sensor input
I USB port DPLUS analog pin
I USB port DMINUS analog pin
- Digital IO power 3.3V
- Digital IO ground
GPIO2
- Digital core power 1.8V
O General purpose IO 3
I/O General purpose IO 4
O General purpose IO 6
I/O SF_CS_
I/O Serial flash data out
I/O Serial flash data in
I/O Serial flash clock
I/O I2C clock pin
I/O I2C data pin
I Microcontroller ICE mode enable
I Power on reset input, active low
I IR control signal input
I/O DRAM data 0
I/O DRAM data 1
I/O DRAM data 2
I/O DRAM data 3
I/O DRAM data 4
- 3.3V power pin for internal digital circuitry
I/O DRAM data 5
I/O DRAM data 6
I/O DRAM data 7
6-1
Description