BT865A View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

BT865A

YCrCb to NTSC/PAL Digital Video Encoder

Unspecified 

CIRCUIT DESCRIPTION

Pin Descriptions

Table 1. Pin Assignments (2 of 3)

Pin Name

I/O

Pin #

ALTADDR

I 26

SLAVE

I 42

RGBOUT

I 14

FIELD

O 15

SLEEP

I 39

SDA

SCL

VDD3V

CVBS/B

I/O 40

I 41

I 44

O8

AGND (CVBS/B)

CVBS/G

6

O 10

AGND (CVBS/G)

7

C/R

O 12

AGND (C/R)

9

Y/CVBS

O 13

AGND (Y/CVBS)

11

FSADJUST

I1

Bt864A/865A

YCrCb to NTSC/PAL Digital Video Encoder

Description

Alternate slave address input (TTL compatible). A logical one configures

the device to respond to an I2C address of 0x88; a logical zero config-

ures the device to respond to an I2C address of 0x8A.(1)

Slave/master mode select input (TTL compatible). A logical one config-

ures the device for slave video timing operation. A logical zero config-

ures the device for master video timing operation. This pin may be

connected directly to VDD or GND.

Analog RGB control input (TTL compatible). A logical one configures the

device to output analog RGB (RGBOUT mode) and one composite

video output. A logical zero configures the device to generate S-video

along with two composite video outputs. This pin may be connected

directly to VDD or GND.

Field control output (TTL compatible). FIELD transitions after the rising

edge of CLK, two clock cycles following falling HSYNC*. It is a logical

zero during FIELD 1 and is a logical one during FIELD 2.

Power-down control input (TTL compatible). A logical one configures the

device for power-down mode. A logical zero configures the device for

normal operation. This pin may be connected directly to VDD or GND.

Serial interface data input/output (TTL compatible). Data is written to

and read from the device via this serial bus.

Serial interface clock input (TTL compatible). The maximum clock rate is

100 kHz.

Input threshold adjustment. When low, indicates nominal supply voltage

of 5 volts. When high, indicates nominal supply voltage of 3.3 volts.

Composite video or Blue (with blanking and sync, and optionally, Macro-

vision encoding). Optional luma delay channel for composite video out-

put.

Analog ground for pin CVBS/B.

Composite video or Green (with blanking and sync, and optionally, Mac-

rovision encoding).

Analog ground for pin CVBS/G.

Modulated chrominance, or Red.

Analog ground for pin C/R.

Luminance or composite video (with blanking, sync, and optionally, Mac-

rovision encoding, and/or closed-captioning encoding).

Analog ground for pin Y/CVBS.

Full-scale adjust control pin. A resistor (RSET) connected between this

pin and GND controls the full-scale output current on the analog out-

puts. For standard operation, use the nominal RSET values shown

under Recommended Operating Conditions.

2

L865A_A unreleased

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