STV7610A

10/17

CIRCUIT DESCRIPTION

The STV7610A contains all the logic and the pow-

er circuits necessary to drive the columns of a

Plasma Display Panel (P. D. P.). The binary value

of each pixel of the displayed line is loaded into the

shift register. Data are input in a 6-bit wide data

bus to A1 - A6 input (case of forward shift mode).

Data are shifted at each low to high transition of

the CLK shift clock. After 16 shifts the first data are

available on B1 - B6 outputs. These B1 - B6 out-

puts can be used to cascade several drivers to

perform any horizontal resolution. The forward/

(FOR/

) input is used to select the

direction of the shift register, A1 - A6 and B1 - B6

data bus input/output status is set according to the

selected direction. FOR/

= H, A is an input

and B is an output.

Serial inputs, CLK, STB inputs are Smith trigger in-

puts. If not used in the application, Blanking

(

), Polarity (

are internaly pulled to level

”H”. The maximum frequency of the shift clock is

20 MHz. This leads to an equivalent 120 MHz se-

rial shift register.

On low level of STB, data is transferred from shift

register to the latch stage. Data will not be re-

freshed as long as STB is kept high.

Blanking input (

) forces the power outputs to

low level when pulled low. All the power outputs

are set at high level when the Polarity command

(

) is pulled low and the Blanking (

) input

is at high level.

as possible to the logical reference ground of the

application.

Shift Register Truth Table

Power Output Truth Table

Note 1 Qn+1 = A1, Qn + 2 = A2, Qn + 3 = A3, Qn + 4 =

A4, Qn + 5 = A5, Qn + 6 = A6, n = [0,6,12,18,...,9 0]

reverse

REV

REV

BLK

POL

BLK

POL

BLK

Input

Input/Outp ut

Shift Register

Function

FOR/

CLK

A

B

Output Q

H

Rise

IN

OUT

Forward shift

H

H or L

IN

OUT

Steady

L

Rise

OUT

IN

Reverse shift

L

H or L

OUT

IN

Steady

Qn

STB

Driver

Outp ut

Comments

X

X

L

X

L

Output low

X

X

H

L

H

Output high

X

H

H

H

Qn

Data latched

L

L

H

H

L

Data copied

H

L

H

H

H

Data copied

REV

BL K

PO L

3