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GS9022A PIN DESCRIPTIONS

PIN NO.

SYMBOL

TYPE

DESCRIPTION

1

Power Supply: Most positive power supply connection for the PLL and Scrambler.

2

Power Supply: Most positive power supply connection for the parallel data inputs and P/S

converter.

3-12

PD0-PD9

I

TTL level inputs of the parallel data words. PD0 is the LSB and PD9 is the MSB.

13

PCKIN

I

TTL level input of the parallel clock.

14

LOCK DET

O

TTL level output which goes high when the internal PLL is locked.

15

Power Supply: Most negative power supply connection.

16

Power Supply: Most positive power supply connection for the PLL and Scrambler.

17

LF

I

Connection for the R-C loop filter components.

18

Power Supply: Most negative power supply connection.

19

I

VCO frequency setting resistor. A 1% resistor is required.

20

Power Supply: Most positive power supply connection for the PLL and Scrambler.

21

Power Supply: Most negative power supply connection.

22, 23

SDO, SDO

I

75

Ω cable driver outputs (true and inverse).

24

Power Supply: Most positive power supply for cable driver outputs.

25

SYNC DET

TTL level input that disables the internal sync detector when high. This allows the GS9022 to

DISABLE

I

serialize 8 or 10 bit non-SMPTE standard parallel data.

26

I

Toggles VCO between ƒ and ƒ/2.

27

I

Power Supply: Most negative power supply connection.

28

I

Compensation capacitor for internal voltage regulator that requires decoupling with a

0.1 µF capacitor located as close as possible to the pin in series with an 820

Ω Resistor.