DS1077L

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TABLE 1

EN0

(BIT)

SEL0

(BIT)

PDN0

(BIT)

CTRL0

(PIN)

OUT0

(PIN)

CTRL0

FUNCTION

DEVICE

MODE

1

Hi-Z

(OUT1 and OUT2)

Power-Down

0

0

0

0

Hi-Z

Power-Down*

Active

1

Master Clk/M

0

1

0

0

Master Clk

MUX Select

Active

1

Hi-Z

1

0

0

0

Master Clk

Output Enable

Active

1

Hi-Z

1

1

0

0

Master Clk/M

Output Enable

Active**

1

Hi-Z

(OUT1 and OUT2)

Power-Down

X

0

1

0

Master Clk

Power-Down

Active

1

Hi-Z

Power-Down

X

1

1

0

Master Clk/M

Power-Down

Active

*This mode is for applications where OUT0 is not used, but CTRL0 is used as a device shutdown.

**Default Condition

CONTROL PIN 1 (CTRL1) – A multifunctional input pin that can be selected as an output enable

and/or a power-down. Its function is determined by the user-programmable control register value of

PDN1. (See Table 2.)

TABLE 2

PDN1

(BIT)

CTRL1

(PIN)

CTRL1

FUNCTION

OUT 1

DEVICE MODE

0

0

Output Enable

Out Clk

Active*

0

1

Output Enable

Hi-Z

Active*

1

0

Power-Down

Out Clk

Active

1

1

Power-Down

Hi-Z

(OUT1 and OUT2)

Power-Down

*Default Condition

NOTE:

Both CTRL0 and CTRL1 can be configured as power-downs, they are internally “OR” connected so that

either of the control pins may be used to provide a power-down function for the whole device, subject to

appropriate settings of the PDN0 and PDN1 register bits. (See Table 3.)