stv7622 STMicroelectronics, stv7622 Datasheet - Page 7

• Manufacturer Part Number: stv7622
• Description: 192 Output Plasma Display Panel Data Driver
• Manufacturer: STMicroelectronics

STV7622
5
5.1
Circuit description
The STV7622 includes all the logic and power circuits necessary to drive the column
electrodes of a Plasma Display Panel (PDP). A low-voltage logic block manages data
information, and a high-voltage block converts the low-voltage information stored in the logic
block into high-voltage signals applied to the display electrodes.
Data input block
The Data Bus is TTL- and LVCMOS-compatible and can also operate in an RSDS (Reduced
Swing Differential Signaling) mode. The maximum clock frequency is 60MHz.
The data input block consists of several shift registers operating in parallel to load the binary
values of the digital video. The number of cells in each shift register is defined by the BS pin
as described below in
Table 2.
For the 3
while for the 6
pins DB1 to DB6, are used.
The DIR input pin is used to select the shift register loading direction.
Data is shifted for each low-to-high transition of the clock signal (CLK1). The maximum
frequency of the clock is 60MHz, which is equivalent to a 360MHz serial shift register for a
6
When the /STB signal goes from high-to-low, data is transferred from the shift register to the
latch and to the power output stages. All output data is stored and held in the latch stage
when the latch input is pulled back High.
The core of the STV7622 is powered by 5V. All logic inputs can be driven either by 5V or
3.3V CMOS logic.
The tables in the following sections describe the position of the first data sampled by the first
rising edge of the CLK1 clock.
32-bit arrangement.
BS1
H
H
64 bit configuration, only pins DB1, DB2 and DB3 of the input data bus are used,
L
L
BS1/BS2 truth table
32 and 2
Table
2.
3
32 bit configurations all 6 bits of the input data bus input,
BS2
H
H
L
L
Shift register configuration
2
3
RSDS mode
3
6
32 bits (96 + 96)
32 bits
64 bits
Circuit description
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