VS6552 Datasheet, PDF (9/26 Pages) STMicroelectronics – VGA Color CMOS Image Sensor Module

VS6552
3.6 Control and Video Interface Formats
3.6.1 Overview
Data is transferred from VS6552 to STV0974 via a
high speed serial link (VisionLink). The serial data
link comprises of two pairs of wires. The serial
control data is transferred between the VS6552 to
STV0974 via a private I²C bus.
3.6.2 VisionLink Physical Layer
Data signals (PDATAP and PDATAN) and clock
signals (PCLKP and PCLKN) are transferred from
VS6552 to STV0974 via 2 pairs of balanced 100 Ω
impedance transmission lines.
The transmission line pairs and custom transmit-
ters/receivers realize a very low voltage differential
(vLVDS) signalling scheme that can transfer infor-
mation in a potentially noisy environment. As im-
plemented in VS6552, VisionLink supports the
transmission of raw Bayer data at VGA resolution
up to 30 frame/s.
3.6.3 Serial I2C Control Bus
The internal registers in VS6552 can be config-
ured by STV0974 via a private I²C bus. STV0974
is the bus master and VS6552 is the single slave.
VS6552 sends and receives commands over this
bus at up to 400 kHz.
4 ELECTRICAL CHARACTERISTICS
Table 6. Absolute Maximum Ratings
Symbol
Parameter
Values
Unit
VDIG
Digital power supply
-0.5 to 3.0
V
VANA
Analog power supply
-0.5 to 3.6
V
MSCL,
MSDA
CCI Signals
-0.3 to VDIG + 0.3
V
PDN, CLK Power Down Control, System Clock Input
-0.3 to VDIG + 0.3
V
T_STO
Storage temperature
-40 to + 85
o_C
Note: Caution: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of
the specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Table 7. Operating Conditions
Symbol
ParTyp.ameter
Min.
Typ.
Voltage
V_DD
Digital power supply voltage
1.7
-
AV_DD
Analog power supply voltage
2.5
-
Temperature
T_AF
Temperature (functional operating)
-30
-
T_AN
Temperature (normal operating)
-25
-
T_AO
Temperature (optimal operating)
+5
-
Note: 1. Storage temperature: Camera has no permanent degradation
2. Functional operating temperature: Camera is electrically functional
3. Normal operating temperature: Camera produces ‘acceptable’ images
4. Optimum performance temperature: Camera produces optimal optical performance
Max.
1.9
3.3
+70
+55
+30
Unit
V
V
°C
°C
°C
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