AR0141CS datasheet(10/48 Pages) ONSEMI

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AR0141CS

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PIXEL OUTPUT INTERFACES

Parallel Interface

The parallel pixel data interface uses these output−only

signals:

• FRAME_VALID

• LINE_VALID

• PIXCLK

• DOUT[11:0]

The parallel pixel data interface is disabled by default at

power up and after reset. It can be enabled by programming

R0x301A. Table 5 shows the recommended settings.

When the parallel pixel data interface is in use, the serial

data output signals can be left unconnected. Set

reset_register [bit 12 (R0x301A[12] = 1)] to disable the

serializer while in parallel output mode.

Output Enable Control

When the parallel pixel data interface is enabled, its

signals can be switched asynchronously between the driven

and High−Z under pin or register control, as shown in

Table 4.

Table 4. OUTPUT ENABLE CONTROL

OE_BAR Pin

Drive Pins R0x301A[6]

Description

Disabled

Interface High−Z

Disabled

Interface driven

Interface High−Z

Interface driven

Configuration of the Pixel Data Interface

Fields in R0x301A are used to configure the operation of

the pixel data interface. The supported combinations are

shown in Table 5.

Table 5. CONFIGURATION OF THE PIXEL DATA INTERFACE

Serializer Disable

R0x301 A[12]

Parallel Enable

R0x301 A[7]

Description

Power up default.

Serial pixel data interface and its clocks are enabled. Transitions to soft standby are synchro-

nized to the end of frames on the serial pixel data interface.

Parallel pixel data interface, sensor core data output. Serial pixel data interface and its clocks

disabled to save power. Transitions to soft standby are synchronized to the end of frames in

the parallel pixel data interface.

High Speed Serial Pixel Data Interface

The High Speed Serial Pixel (HiSPi) interface uses four

data lanes and one clock as output.

• SLVSC_P

• SLVSC_N

• SLVS0_P

• SLVS0_N

• SLVS1_P

• SLVS1_N

• SLVS2_P

• SLVS2_N

• SLVS3_P

• SLVS3_N

The HiSPi interface supports three protocols,

Streaming−S, Streaming−SP, and Packetized SP. The

streaming protocols conform to a standard video application

where each line of active or intra−frame blanking provided

by the sensor is transmitted at the same length. The

Packetized SP protocol will transmit only the active data

ignoring line−to−line and frame−to−frame blanking data.

These protocols are further described in the High−Speed

Serial Pixel (HiSPi) Interface Protocol Specification

V1.50.00.

The HiSPi interface building block is a unidirectional

differential serial interface with four data and one double

data rate (DDR) clock lanes. One clock for every four serial

data lanes is provided for phase alignment across multiple

lanes. Figure 9 shows the configuration between the HiSPi

transmitter and the receiver.

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