The ModelSource 640-pin Adapter

Chapter 2: Building the Daughterboard

J4-FP5–J4-FP8 (FANP12V), if used

DUT signal used for DUT clock

You can connect to any of the available power supplies listed in Table 1. Do not interconnect different power supplies.

Table 1: Available Power Supplies

Pins

Signal

Power Supply

 

 

 

 

 

 

J2-AP5–J2-AP8

P5V

+5V DC, 6A max

J4-AP5–J4-AP8

 

 

 

 

 

J2-AP1–J2-AP4

ADJVCC1

+3-5V DC, 6A max

 

 

 

J4-AP1–J4-AP4

ADJVCC2

+3-5V DC, 6A max

 

 

 

J4-FP1–J4-FP4

M5V

-5.2V DC, 400mA max

 

 

 

J2-FP5–J2-FP8

P12V

+12V DC, 400mA max

 

 

 

J4-FP5–J4-FP8

FANP12V

+12V DC, 400mA max (for

 

 

fan/heat sink only)

 

 

 

For bypass/decoupling capacitors, follow the DUT manufacturer’s recommendations, if provided; otherwise, use the following guidelines:

For each supply of P5V, ADJVCC1 or ADJVCC2, provide 47F, 16V tantalum (use two of these, if space permits).

For each supply of P12V, M5V, provide 10F, 16V tantalum.

For bypass, for every 25 signal pins, place a pair of 0.1F and 0.01F high frequency X7R or NPO capacitors directly underneath the device, if possible, or around the perimeter of the device.

November 2001

Synopsys, Inc.

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Synopsys 640-pin Generic Device Adapter manual P5V, ADJVCC1, ADJVCC2, M5V, FANP12V