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5 tv interface signals – AMD Geode SC1201 User Manual

Page 54

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54

AMD Geode™ SC1200/SC1201 Processor Data Book

Signal Definitions

32579B

3.4.5

TV Interface Signals

Signal Name

Ball No.

Type

Description

Mux

CVBS

A23,
A24,

D24

O

Composite Video. Includes synchronization, luminance
and chrominance components of video.

See F4BAR0+

Memory Offset

C08h[4:3] bit

description on

page 356 for config-

uration details.

SVY

A24

O

Super Video Luminance. S-Video luminance signal.

SVC

C23

O

Super Video Chrominance. S-Video chrominance sig-
nal.

TVR

A24,

C23

O

TV Red. TV Red component signal for SCART.

TVG

A23

O

TV Green. TV Green component signal for SCART.

TVB

C23,

D24

O

TV Blue. TV Blue component signal for SCART.

Y

A23

O

Intensity. Color intensity vector.

Cr

C23,

D24

O

Chrominance Red. Red axis phase angle.

Cb

A24,

C23

O

Chrominance Blue. Blue axis phase angle.

TVREF

C24

I/O

Voltage Reference. Reference voltage for TV DAC. This
signal reflects the internal voltage reference. If an exter-
nal voltage reference is used, this input is tied to a
1.235V reference.

---

TVCOMP

B26

I

Current Compensation for TV DAC. A 0.1 µF to 1.2 µF
capacitor is used to connect this ball to AV

CCTV

.

---

TVRSET

A25

I

TV Set Resistor. This signal sets the current-level for the
TV DAC. Typically, an 1140

Ω, 1% resistor is connected

between this ball and AV

SSTV

. The full scale current out-

put of TV DACs is 32 * TVREF / TVRSET. An 1140

Ω, 1%

resistor enables driving a double terminated 75

Ω trans-

mission line.

---

TVIOM

B23

O

TV Output Dump Current. Typically, a 9.3

Ω, 1% resistor

is connected between this ball and AV

SSTV

.

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