DS99R103, DS99R104

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SNLS241D – MARCH 2007 – REVISED APRIL 2013

DS99R103 Serializer Pin Descriptions (continued)

Pin

Pin Name

I/O

Description

No.

12

VODSEL

LVCMOS_I

VOD Level Select

VODSEL = L; LVDS Driver Output is

VODSEL = H; LVDS Driver Output is

For normal applications, set this pin LOW. For long cable applications where a larger VOD is

required, set this pin HIGH.

5

DCAOFF

LVCMOS_I

RESERVED – This pin MUST be tied LOW.

8

DCBOFF

LVCMOS_I

RESERVED – This pin MUST be tied LOW.

13

RESRVD

LVCMOS_I

RESERVED – This pin MUST be tied LOW.

LVDS SERIAL INTERFACE PINS

20

DOUT+

LVDS_O

Transmitter LVDS True (+) Output. This output is intended to be loaded with a 100

Ω load to the

DOUT+ pin. The interconnect should be AC Coupled to this pin with a 100 nF capacitor.

19

DOUT

−

LVDS_O

Transmitter LVDS Inverted (-) Output This output is intended to be loaded with a 100

Ω load to the

DOUT- pin. The interconnect should be AC Coupled to this pin with a 100 nF capacitor.

POWER / GROUND PINS

22

VDDDR

VDD

Analog Voltage Supply, LVDS Output Power

21

VSSDR

GND

Analog Ground, LVDS Output Ground

16

VDDPT0

VDD

Analog Voltage supply, VCO Power

17

VSSPT0

GND

Analog Ground, VCO Ground

14

VDDPT1

VDD

Analog Voltage supply, PLL Power

15

VSSPT1

GND

Analog Ground, PLL Ground

30

VDDT

VDD

Digital Voltage supply, Tx Serializer Power

31

VSST

GND

Digital Ground, Tx Serializer Ground

7

VDDL

VDD

Digital Voltage supply, Tx Logic Power

6

VSSL

GND

Digital Ground, Tx Logic Ground

42

VDDIT

VDD

Digital Voltage supply, Tx Input Power

43

VSSIT

GND

Digital Ground, Tx Input Ground

24

VSS

GND

ESD Ground

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