AM3874 datasheet(138/361 Pages) TI

138 / 361 page

AM3874, AM3871

SPRS695C – SEPTEMBER 2011 – REVISED DECEMBER 2013

www.ti.com

3.2.24 Video Output (Analog, TV)

Table 3-47. Video Outupt (Analog, TV) Terminal Functions

SIGNAL

TYPE(1)

OTHER(2) (3)

DESCRIPTION

NAME

NO.

VIDEO INTERFACES (TV)

Composite/S-Video (Luminance) Amplifier Output.

In Normal mode (internal amplifier used), this pin drives the 75-

Ω TV

load. An external resistor (Rout) should be connected between this pin

and the TV_VFB0 pin and be placed as close to the pins as possible.

–

The nominal value of Rout is 2700

Ω.

TV_OUT0

AH24

VDDA_VDAC_1P8

In TVOUT Bypass mode (internal amplifier not used), this pin is not

used.

When this pin is not used or the TV output is powered-down, this pin

should be left unconnected.

S-Video (Chrominance) Amplifier Output.

In Normal mode (internal amplifier used), this pin drives the 75-

Ω TV

load.

An external resistor (Rout) should be connected between this pin and

the TV_VFB1 pin and be placed as close to the pins as possible. The

–

TV_OUT1

AH22

nominal value of Rout is 2700

Ω.

VDDA_VDAC_1P8

In TVOUT Bypass mode (internal amplifier not used), this pin is not

used.

When this pin is not used or the TV output is powered-down, this pin

should be left unconnected.

Composite/S-Video (Luminance) Feedback.

In Normal mode (internal amplifier used), this pin acts as the buffer

feedback node.

An external resistor (Rout) should be connected between this pin and

the TV_OUT0 pin.

–

TV_VFB0

AG23

A O

In TVOUT Bypass mode (internal amplifier not used), this pin acts as

VDDA_VDAC_1P8

the direct Video DAC output and should be connected to ground

through a load resistor (Rload) and to an external video amplifier. The

nominal value of Rload is 1500

Ω.

When this pin is not used or the TV output is powered-down, this pin

should be left unconnected.

S-Video (Chrominance) Feedback.

In Normal mode (internal amplifier used), this pin acts as the buffer

feedback node.

An external resistor (Rout) should be connected between this pin and

the TV_OUT1 pin.

–

TV_VFB1

AG22

A O

In TVOUT Bypass mode (internal amplifier not used), it acts as the

VDDA_VDAC_1P8

direct Video DAC output and should be connected to ground through

a load resistor (Rload) and to an external video amplifier. The nominal

value of Rload is 1500

Ω.

When this pin is not used or the TV output is powered-down, this pin

should be left unconnected.

(1)

I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, MM = Multi Muxed, DSIS = De-

selected Input State

(2)

IPD = Internal Pulldown Active, IPU = Internal Pullup Active, DIS = Internal Pull Disabled. This represents the default state of the

Internal Pull after Reset. For more detailed information on pullup/pulldown resistors and situations where external pullup/pulldown

resistors are required, see Section 4.5.1, Pullup/Pulldown Resistors and Section 7.3.17, Pin Behaviors at Reset.

(3)

Specifies the operating I/O supply voltage for each signal

138

Device Pins

Submit Documentation Feedback

Product Folder Links: AM3874 AM3871

AM3874 Datasheet(PDF) 138 Page - Texas Instruments

AM3874 Datasheet(HTML) 138 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL