SY75608 datasheet(15/44 Pages) MICROCHIP

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DS20006363D-page 15

SY75608/612

3.0

PIN DESCRIPTIONS

All device inputs and outputs are LPHCSL unless described otherwise. The Type column uses the following symbols:

• I: Input

• IPU: Input with 100 kΩ internal pull-up resistor

• IPD: Input with 100 kΩ internal pull-down resistor

• O: Output

• I/OOD: Input/Open-Drain Output

• NC: No Connect

• P: Power Supply

The descriptions of the pins are listed in Table 3-1 and Table 3-2.

TABLE 3-1:

SY75608 PIN FUNCTION TABLE

Pin Number

Pin Name

Pin Type

Description

IN0_p

Differential/Single Ended References 0 and 1

Input frequency range >0 Hz to 250 MHz

Note: >0 Hz means frequency higher than DC. Output Enable control

pins (OEnb) need four clock cycles before the corresponding output get

enabled/disable. This feature ensures glitch free transition of the outputs.

IN0_n

IN1_p

IN1_n

OUT0_p

Ultra-Low Additive Jitter Differential LPHCSL Outputs 0 to 7

Output frequency range >0 Hz to 250 MHz

In I2C bus controlled mode (SEL pin pulled high) output enable is

controlled via internal registers

In Hardware control mode (SEL pin pulled low) output enable is

controlled by OE_n pins.

OUT0_n

OUT1_p

OUT1_n

OUT2_p

OUT2_n

OUT3_p

OUT3_n

OUT4_p

OUT4_n

OUT5_p

OUT5_n

OUT6_p

OUT6_n

OUT7_p

OUT7_n

IN_SEL0

/I2C_SA_0

IPD

Input Select 0 or I2C Address

When SEL pin is low, this pin is Input Select 0 hardware control input.

When SEL pin is high, this pin together with pin 44 provides address for

I2C Bus. This pin is pulled down with 100 kΩ resistor.

IN_SEL1

IN_SEL0

OUTN

Input 0 (IN0)

Input 1 (IN1)

Crystal Oscillator or Overdrive

Crystal Bypass

IN_SEL1

/I2C_SA_1

IPD

Input Select 1 or Serial Interface Input

When SEL pin is low, this pin is Input Select 1 hardware control pin.

When SEL pin is high, this pin together with pin 45 provides address for

I2C Bus. This pin is pulled down with 100 kΩ resistor.

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