Pin Descriptions

The following table provides the pin descriptions for the 20-pin ICS90C65 packages.

PIN

NUMBER

PIN

SYMBOL

TYPE

DESCRIPTION

1

CLKI

IN

Reference input clock from system.

2

MSEL2

IN

Select input for MCLK selection.

3

EXTCLK

IN

External clock input for an additional frequency.

4

VSEL1

IN

Control input for VCLK selection.

5

VSEL0

IN

Control input for VCLK selection.

6

SELEN

IN

Strobe for latching VSEL(0,1) (low enable).

7

VSEL2

IN

Control input for VCLK selection.

8

VSEL3

IN

Control input for VCLK selection.

9

MSEL0

IN

Select input for MCLK selection.

10

DVSS

-

Ground for Digital Circuit.

11

MSEL1

IN

Select input for MCLK selection.

12

MCLK

OUT

Memory Clock Output.

13

PWRDN

IN

Power Down Control.

14

MCLKE

IN

Enable input for MCLK output (high enables output).

15

AVDD

-

Power supply for analog circuit.

16

AVSS

-

Ground for analog circuit.

17

NC

-

No connection.

18

VCLKE

IN

Enable input for VCLK output (high enables output).

19

VCLK

OUT

Video Clock Output.

20

DVDD

-

Power supply for Digital Circuit.

Note:

CLKI, EXTCLK,VSEL0, VSEL1,VSEL2, VSEL3, SELEN, MSEL0, MSEL1, MSEL2, VCLKE, and MCLKE - input pins have

internal pull-up resistors. PWRDN has an internal pull-down resistor.

ICS90C65

5