Sanyo EP92H manual Terrestrial Digital One-Segment Chipset, NTSC/PAL Video Encoder

Terrestrial Digital One-Segment Chipset

Miniature reception modules with low power consumption that achieve stable reception under rapidly changing conditions are required for cell phones and other portable terminals. SANYO has established independently developed diversity synthesis technology and the industry’s first direct conversion technology that together meet these requirements.

NTSC/PAL Video Encoder

This IC makes it possible to display the cell phone’s LCD screen contents or image data that was taken with the camera and is stored in the camera’s memory on a TV (video input).

LNA Frequency conversion (LA8101)

	LPF
	π/2
UHF Ant.	LPF

ODFM demodulation LSI (LC74112)

A/D
A/D	demodulator	OFDM	Deinterleave

E

F

MPEG-TS output

	Application
Baseband		LCD
	processor
processor

	LPF
LNA	π/2
	LPF

A/D

A/D

C

Memory

Flash

	LC822961
LC822971
Frame	LC822961
memory	equivalent

PLL OSC

Direct conversion technology adopted	Diversity synthesis technology adopted
→ No SAW filter is required, making
	→ Makes stable reception possible
further miniaturization possible

Due to the adoption of direct conversion technology

Large external components such as a SAW filter are not required

Image cancellation using analog circuits is no longer required, and at the same

time as reducing the size of the circuit and the power consumption, circuit performance does not degrade over time or due to temperature fluctuations.

This approach achieves antenna diversity,

which is effective at improving reception performance.

Cell Phone Video Drivers

Video driver

	LA73074CL		New
			product
● No output coupling capacitors required		● Built-in sixth-order low-pass filter (fc = 7.5 MHz)
● Low-voltage drive (2.7 to 3.6 V)		● Standby mode power consumption: 0 ∝A
● Voltage sag does not occur		● The amplifier gain can be selected (6, 9, or 12 dB)

Low:	6dB
GAIN_CTL High:	9dB	VCC
Open: 12dB

				2		10
from	V_IN				Video		V_OUT
	3	CLAMP	LPF	AMP			9
DAC
					Driver
							75 Ω
						Power
	A-GND 1		Minus Voltage			Save
	GND 5		Generator
		6		7	8	4
		CLK_OUT		ND1	VCC_N	P_SAV_CTL
						Low:	Active
						High:	Stanby
						Open:	Stanby

memory

NTSC/PAL Encoder

LC822961

LC822963	New
	product

Converts base band processor generated video and provides other functions for TV output.

●Miniature package (CSP42: 3.3 ⋅ 3.78 mm2)

●10-bit D/A converter with built-in 75Ω driver

●Supports a wide variety of input data rates (ITU-R601/SQ)

●The LC822963 is an MCP package version of the LC822961 audio operational amplifier (LA6358N).

●Application examples: TV games, video players

NTSC/PAL Encoder with On-Chip DRAM

LC822971	Under
	development

Data written to memory can be continuously output to a TV without being sequentially updated using the internal frame memory.

Once the data has been written it can be displayed with essentially no load on the microcontroller.

●On-chip 16 Mbit SDRAM. Allows drawing by the CPU without concern for the TV display rate.

●Rotation processing (at write), enlargement processing (at display)

●The NTSC/PAL encoder block is the same as that in the LC822961.

●Application examples: Photograph album shows, business presentation tools

CLK

SEL

16-Mbit SDRAM (MCP)

PLL

SDRAM

VGA

controller

Size

D/A converter and

(5 Mbits)

75 Ω driver

Composite

video output

CTL bus

DAC

DRAM

H/V filter

CPU I/F

writer

H/V ccalar

NTSC/PAL

Data

Timing

video encoder

Display writer

generator

LC822961

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