Process Change Notice #1005192

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W7206F1 Process Change Notice Form rev X

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PCN Date: 19May10

Effective Date: 19Aug10

Title: Si570/571 Datasheet Revision from 1.1 to 1.2

Originator: Juan Conchas

Phone: 512-532-5245

Dept: Wireline

Customer Contact: Kathy Haggar

Phone: (512) 532-5261

Dept: Sales

PCN Type:

Assembly

Discontinuance

Package

Test

Datasheet

Fabrication

Product Revision

Packing

Labeling

Location

Other

Last Order Date: N/A

PCN Details

Description of Change:

Datasheet changes as outlined below were made to revision 1.2.

1. Renamed “Unfreeze to Newfreq Delay” with “Unfreeze to Newfreq Timeout” in Table 12.

2. Added Freeze M procedure on page 14 for preventing output clock changes during small

frequency multi-register RFREQ writes.

3. Added Freeze M, Freeze VCADC, and RST_REG versus RECALL information to Register 135

references in "4. Serial Port Registers" on pages 17and 20.

4. Updated Figure 8 and Table 16 on page 26 to include production test side pins. This change

is for reference only as the side pins are raised above the seating plane and do not impact

PCB layout. Side-pins have no electrical function in the end system.

5. Change document title to “Si570/571 10MHz to 1.4GHz I2C Programmable XO/VCXO.”

6. Remove mention of “Any-rate.”

Reason for Change: Datasheet update to support Freeze M procedure.

Impact on Form, Fit, Function, Quality, Reliability:

No impact to form, fit, function, quality or reliability.

Product Identification:

Si570, Si571

Last Date of Unchanged Product: N/A

Qualification Samples: N/A

Customer Early Acceptance Sign Off:

Customers may approve early PCN acceptance by completing the information below:

Early Acceptance Date:

Name:

Company:

Email your early Acceptance approval to: katherine.haggar@silabs.com

Qualification Data: N/A