ASX340 datasheet(13/78 Pages) ETC2

13 / 78 page

PDF: 171981479/Source: 8304342517

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ASX340/MT9V139_DS Rev. C Pub. 3/11 EN

ASX340/MT9V139: 1/4-Inch Color CMOS NTSC/PAL Digital Image Sensor

Pin Descriptions and Assignments

Aptina Confidential and Proprietary

Preliminary

Composite Video Output

DAC_POS

Output

Positive video DAC output in differential mode.

Video DAC output in single-ended mode. This interface is enabled by default using

NTSC/PAL signalling. For applications where composite video output is not required,

the video DAC can be placed in a power-down state under software control.

DAC_NEG

Output

Negative video DAC output in differential mode.

DAC_REF

Output

External reference resistor for the video DAC.

Manufacturing Test Interface

TDI

Input

JTAG Test pin (Reserved for Test Mode)

TDO

Output

JTAG Test pin (Reserved for Test Mode)

TMS

Input

JTAG Test pin (Reserved for Test Mode)

TCK

Input

JTAG Test pin (Reserved for Test Mode)

TRST_N

Input

Connect to GND.

ATEST1

Input

Analog test input. Connect to GND in normal operation.

ATEST2

Input

Analog test input. Connect to GND in normal operation.

GPIO

GPIO12

Input/Output

Dedicated general-purpose input/output pin.

GPIO13

Input/Output

Dedicated general-purpose input/output pin.

Power

VREG_BASE

Supply

Voltage regulator control. Leave floating if not used.

A5, A7, D8,

E7, G1, G3

VDD

Supply

Supply for VDD core: 1.8V nominal. Can be connected to the output of the transistor of

the off-chip bypass transistor or a external 1.8V power supply.

B2, B8, C8,

E3, E8, G8,

VDD_IO

Supply

Supply for digital IOs: 2.8V nominal.

VDD_DAC

Supply

Supply for video DAC: 2.8V nominal.

VDD_PLL

Supply

Supply for PLL: 2.8V nominal.

B4, H6

VAA

Supply

Analog power: 2.8V nominal.

VAA_PIX

Supply

Analog pixel array power: 2.8V nominal. Must be at same voltage potential as VAA.

Reserved

B5, C5, D1,

D5, H1

DGND

Supply

Digital ground.

E5, F4

AGND

Supply

Analog ground.

Table 4:

Pin Descriptions (continued)

Pin Number

Pin Name

Type

Description

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