Si477x Release Notes

Si477x Release Notes
Note: All rights reserved. No part of this publication may be reproduced or transmitted in any form or by
any means. The only controlled copy of this document is kept in electronic form on the Silicon
Laboratories computer network. All printed copies are uncontrolled documents and are not updated.
This document is the property of Silicon Laboratories and shall be returned upon request
rev 011
Pg 1 / 6
Silicon Laboratories, Inc.
Silicon Laboratories
TITLE
Si4770/77 Release Notes
SECURITY
Disclosure under NDA Only
Table of Contents
1.
Introduction...............................................................................................3
2.
Overview ...................................................................................................3
3.
3.1
AM Receiver Firmware .............................................................................4
Revision 7.1.0 .............................................................................................4
3.1.1
Errata................................................................................................................................... 4
3.2
Revision 9.1.0 .............................................................................................4
3.2.1
Errata................................................................................................................................... 4
4.
4.1
FM Receiver Firmware .............................................................................5
Revision 8.1.0 .............................................................................................5
4.1.1
Errata................................................................................................................................... 5
4.2
Revision 10.1.0 ...........................................................................................5
4.2.1
Errata................................................................................................................................... 5
5.
5.1
5.2
AM/FM Receiver Firmware .......................................................................6
Revision A10 (End-of-Life (EOL)) ...............................................................6
Revision A20 ..............................................................................................6
rev 011
Pg 2 / 6
Silicon Laboratories, Inc.
Silicon Laboratories
TITLE
Si4770/77 Release Notes
SECURITY
Disclosure under NDA Only
1. Introduction
2. Overview
This document describes changes in performance and features between releases of the Si4770/77
AM/FM Receiver firmware (FW).
This document should be used in conjunction with the Si4770/77 data sheets and programming guide.
Please use the data sheets and application notes for programming support, and this document as an
additional reference.
Both engineering releases of the firmware along with production releases are listed in this document. Any
firmware version with an alphabet character in the version is an engineering release. For example FW
Rev 0C is Firmware 0 engineering version C. Production firmware has numeric characters only in the
version numbers.
The AM firmware component revision (enumerated in section 3,) FM firmware component revision
(enumerated in section 4,) are combined to into an AM/FM firmware revision (enumerated in section 5).
rev 011
Pg 3 / 6
Silicon Laboratories, Inc.
Silicon Laboratories
TITLE
Si4770/77 Release Notes
SECURITY
Disclosure under NDA Only
3. AM Receiver Firmware
3.1 Revision 7.1.0

End-of-Life (EOL). Not Recommended for New Designs.
3.1.1 Errata

The BLTF bit never gets cleared once it is set.
3.2 Revision 9.1.0

Production release
3.2.1 Errata


All previous errata fixed unless otherwise noted.
No further errata.
rev 011
Pg 4 / 6
Silicon Laboratories, Inc.
Silicon Laboratories
TITLE
Si4770/77 Release Notes
SECURITY
Disclosure under NDA Only
4. FM Receiver Firmware
4.1 Revision 8.1.0

End-of-Life (EOL). Not Recommended for New Designs.
4.1.1 Errata

EN55020 S1 In-band test fails at blockers <= 75 kHz from 98 MHz desired signal

In RDS mode, AB sync type reports erroneous block A

In RDS mode, DA sync type reports erroneous block A

In RDS mode, invalid block A marked as valid

RDS is slow to acquire synchronization at RDS sensitivity level.

The BLTF bit never gets cleared once it is set.
4.2 Revision 10.1.0

Production Release
4.2.1 Errata


All previous errata fixed unless otherwise noted.
No further errata.
rev 011
Pg 5 / 6
Silicon Laboratories, Inc.
Silicon Laboratories
TITLE
Si4770/77 Release Notes
SECURITY
Disclosure under NDA Only
5. AM/FM Receiver Firmware
5.1 Revision A10

End-of-Life (EOL). Not Recommended for New Designs.

AM Firmware Component Revision 7.1.0

FM Firmware Component Revision 8.1.0
5.2 Revision A20

Production Release

AM Firmware Component Revision 9.1.0

FM Firmware Component Revision 10.1.0
rev 011
Pg 6 / 6
Silicon Laboratories, Inc.