Texas Instruments SERDESUB-16OVT User manual

User’s Guide
SNLU108 – July 2012
SERDESUB-16OVT EVM User’s Guide
SNLU108 – July 2012 SERDESUB-16OVT EVM User’s Guide 1
TABLE OF CONTENTS
TABLE OF CONTENTS..................................................................................................1
1. DESCRIPTION.........................................................................................................2
2. KIT CONTENTS.......................................................................................................3
3. SYSTEM REQUIREMENTS ....................................................................................3
4. SETUP INSTRUCTIONS .........................................................................................4
5. BLOCK DIAGRAMS................................................................................................5
6. OPERATION............................................................................................................6
7. BOM (BILL OF MATERIALS)..................................................................................8
8. APPENDIX.............................................................................................................10
Serializer and Deserializer PCB Schematics......................................................... 10

2 SERDESUB-16OVT EVM User’s Guide SNLU108 – July 2012
1. DESCRIPTION
The SERDESUB-16OVT is an evaluation kit designed to demonstrate performance and
capabilities of the DS90UB901Q and DS90UB902Q FPD-Link III Serializer/Deserializer
Chipset for use with the OmniVision sensors. This serves as an add-on to the
OmniVision development systems by providing a serialized digital interface between
camera and controller. The chipset enables transmission of a high-speed video data
along with a low latency bi-directional control bus simultaneously over a single twisted
pair cable. The bidirectional control channel of the DS90UB901Q/902Q provides
seamless communication between the camera and Host Controller.
The Serializer board provides LVCMOS inputs and a bidirectional control channel (I2C
compatible) from the Image Sensor and is converted to a FPD-Link III LVDS data pair
on the DS90UB901Q Tx board. The DS90UB902Q Rx board receives the FPD-Link III
LVDS serialized data stream and converts it back into parallel LVCMOS signals and
clock together with the bidirectional control channel (I2C). The Host Controller
processes the video data from the image sensor and shows it on a display.
This manual is intended for developers who want a convenient way to begin system
development. It is assumed that the reader has a basic understanding of digital video
and still capturing concepts.
Description

SNLU108 – July 2012 SERDESUB-16OVT EVM User’s Guide 3
2. KIT CONTENTS
oOne SERDESUB-16OVT Serializer Board with the DS90UB901Q
oOne SERDESUB-16OVT Deserializer Board with the DS90UB902Q
3. SYSTEM REQUIREMENTS
The following items are required in order to use the SERDESUB-16OVT EVM kit:
oOmniVision camera sensor module
−OV10620, OV7710, OV9715
oHost Controller with I2C interface bus (I2C master)
−FPGA, Electronic Control Unit (ECU), Video Processor, Microcontroller
−Slave clock stretching must be supported by the I2C master controller
oCAT6 cable
oExternal +5VDC 1A Power Supply
Figure 1: Imager Sensor – Serializer and Deserializer Board Connections
OVT
Sensor
SER DES +5VDC
Kit Contents

4 SERDESUB-16OVT EVM User’s Guide SNLU108 – July 2012
4. SETUP INSTRUCTIONS
1. Connect the DS90UB901Q Serializer board to the Omnivision module via the J1
32-pin header (16 x 2 x 0.1"). Ensure that the camera module and the Serializer
board are connected properly by matching the ground (GND) pins.
2. Connect the DS90UB902Q Deserializer board to the Host Controller.
3. Connect the DS90UB901Q Serializer board to the DS90UB902Q Deserializer
board via CAT6 cable on the RJ45 connectors.
4. Apply 5V power supply to the Deserializer board J10 power jack.
5. Push “ON” button (S4) on Deserializer board. Green light should now be visible
on RJ45 connectors at Serializer (J4) board and Deserializer (J7) board to
indicate power is applied to the boards.
6. Initialize the Deserializer. Refer to the DS90UB901Q/902Q datasheet for startup
procedure and the definition of each register.
7. Verify that LOCK LED on D5 and the RJ45 orange lights are lit. This indicates the
chipset is Locked and ready to begin I2C communication with the image sensor.
8. Initialize the OmniVision image sensor. Refer to the appropriate sensor
datasheet for specific information.
9. Start video capture (or alternate control application).
Setup Instructions

SNLU108 – July 2012 SERDESUB-16OVT EVM User’s Guide 5
5. BLOCK DIAGRAMS
RJ45
Figure 2. Serializer Board Block Diagram
LP2992
1.8
RJ45
16x2
Header
2
/
I2C
PCLK, D0-D9
HS, VS
SERDESU -16OVT Deserializer
DS90U 902Q
LM22671
5.0
LP38693
ADJ
12V 5V
To Processor
Figure 3. Deserializer Board Block Diagram
Block Diagrams

6 SERDESUB-16OVT EVM User’s Guide SNLU108 – July 2012
6. OPERATION
This section describes how to I2C instructions between Host and image sensor through
the DS90UB902Q and DS90UB901Q pair function in a camera system application.
Figure 4 shows the configuration of evaluation boards for I2C communication with a
Host controller. Note a Host controller requires an I2C interface with slave clock
stretching support.
In Camera mode, I2C transactions originate from the Master controller at the
Deserializer side (Figure 4). The I2C slave core in the Deserializer will detect if a
transaction is intended for the Serializer or the camera sensor (slave device) at the
Serializer. Commands are sent over the bidirectional control channel to initiate the
transactions. The Serializer will receive the command and generate an I2C transaction
on its local I2C bus. At the same time, the Serializer will capture the response on the
I2C bus and return the response on the high speed forward channel. The Deserializer
parses the response and passes the appropriate response onto the Deserializer I2C
bus.
Figure 4. Typical System Block Diagram
Operation

SNLU108 – July 2012 SERDESUB-16OVT EVM User’s Guide 7
TROUBLESHOOTING CHART
Problem… Solution…
No image Check that RJ45 green lights are on
No green light on RJ45
connectors Check that 5V power supply is applied, and CAT cable connection is good
Cycle “ON” button on Deserializer
board
All lights on, but no image Check that orientation of board
connections is correct
No image Check that lens cap is removed from
camera
Power, ground, input data and
input clock are connected
correctly, but no outputs.
Check the Power Down pins of both Serializer and
Deserializer boards to make sure that the devices are
enabled (PDB=Vdd) for operation.
Operation

8 SERDESUB-16OVT EVM User’s Guide SNLU108 – July 2012
7. BOM (BILL OF MATERIALS)
Item Quantity
Reference Part PCB Footprint
______________________________________________________________________________________
1
1
C1 5pF_open CAP_HDC_0603
2
1
C2 5pF_open CAP_HDC_0603
3
5
C3,C4,C5,C28,C29 0.1uF CAP_HDC_0603
4
2
C6,C30 10uF CAP_HDC_0603
5
3
C7,C35,C52 1uF CAP_HDC_0603
6
9
C8,C16,C18,C57,C59,C70, 10uF CAP_HDC_1206
C72,C73,C75
7
1
C9 10uF CAP_HDC_1206
8
14
C10,C11,C13,C19,C20,C22, 0.01uF CAP_HDC_0603
C24,C31,C32,C36,C38,C43,
C47,C60
9
25
C12,C14,C15,C17,C21,C23, 0.1uF CAP_HDC_0603
C25,C33,C37,C39,C44,C45,
C46,C48,C51,C53,C55,C56,
C58,C61,C63,C64,C69,C71,
C74
10
2
C26,C27 100pF CAP_HDC_0603
11
1
C34 22uF 805
12
1
C40 22uF Radial_Surface_Mount
13
1
C41 0.1uF CAP_0603
14
1
C42 1uF CAP_HDC_0805
15
1
C49 100uF 3216_12_EIA_1206
16
1
C50 0.01uF CAP_HDC_0603
17
2
C54,C62 10uF CAP_HDC_0805
18
4
C65,C66,C67,C68 4.7uF CAP_HDC_0805
19
1
D1 Green_LED,0603 603
20
1
D2 DIODE SCHOTTKY SC_90_SOD_323F
21
2
D3,D4 DIODE SCHOTTKY S_Mini_2P
22
1
D5 Orange_LED,0603 603
23
1
J1 HEADER 16X2 Through_Hole_Right_Angle
24
2
J2,J6 IDC1X3 Header_1X3P
25
1
J3 2x3-Pin Header Header_2X3P
26
2
J4,J7 RJ45 RJ45_LED
27
1
J5 HEADER 16X2 hdr_100mil_16X2
28
3
J8,J9,J11 CON2 CON2
29
1
J10 CONN JACK PWR 3_terminal_thru_hole_power_jack
30
1
L1 39uH Surface_Mount_
31
1
L2 100uH 100uH
32
11
L3,L4,L5,L6,L7,L8,L9,L10, FB 1000 Ohm,0402 RES_HDC-0402
L11,L12,L13
33
1
P1 HSD_2X2_open CON_HSD-4P_1
34
1
P2 HSD_2X2_open CON_HSD-4P
35
2
Q1,Q2 MN1382N SC_75
36
1
Q3 PMOSFET PMOSFET
Bill of Materials

SNLU108 – July 2012 SERDESUB-16OVT EVM User’s Guide 9
Item Quantity
Reference Part PCB Footprint
______________________________________________________________________________________
37
9
R1,R10,R12,R15,R32,R33, 10K RES_0603
R35,R37,R46
38
4
R2,R3,R19,R29 4.7K RES_0603
39
6
R4,R18,R20,R28,R31,R41 220 ohm RES_0603
40
9
R5,R7,R8,R9,R23,R24,R25, 33 ohm RES_0603
R26,R27
41
1
R6 33 ohm RES_0603
42
5
R11,R13,R34,R36,R38 1.0K RES_0603
43
1
R14 1K RES_0603
44
2
R16,R17 33 ohm_open RES_0603
45
2
R21,R22 1.8K RES_0603
46
2
R30,R54 75 ohm,0603 RES_0603
47
1
R39 0 Ohm RES_HDC_0603
48
1
R40 1.0K_open RES_0603
49
1
R42 0ohm RES_HDC_0603
50
1
R43 976_open RES_HDC_0603
51
1
R44 10K RES_HDC_0402
52
1
R45 470K RES_HDC_060
53
2
R47,R51 9.31K RES_HDC_0603
54
2
R48,R52 5.62K RES_HDC_0603
55
2
R49,R53 51K RES_HDC_0603
56
1
R50 0ohm_open RES_HDC_0603
57
2
R58,R59 0 ohm_open RES_0402
58
1
S1 SW DIP-2 Surface_Mount
59
2
S2,S4 SW PUSHBUTTON SPST_NO
60
1
S3 SW DIP-4 CT2184LPST
61
1
U1 DS90UB901Q 32ld_LLP
62
1
U2 ATtiny25 8_SOIC
63
2
U3,U7 MN1382N, 3.4-3.7V Mini_3P
64
1
U4 LP2992AIM5-3.3 SOT_23_5
65
2
U5,U11 LP2992AIM5-1.8 SOT_23_5
66
1
U6 DS90UB902Q 40ld_LLP
67
1
U8 LM22671MRE-5.0 8_PSOP
68
1
U9 NC7SZ14/SOT23 SC70_5
69
1
U10 NC7SZ74 US8_8_VSSOP
70
2
U12,U13 LP38693MP-ADJ SOT223-4
71
1
Y1 OSC4/SM 4_PIN_SMT
Bill of Materials

10 SERDESUB-16OVT EVM User’s Guide SNLU108 – July 2012
8. APPENDIX
Serializer and Deserializer PCB Schematics
Appendix