PCA9541PW/03 NXP [NXP Semiconductors], PCA9541PW/03 Datasheet - Page 43

• Manufacturer Part Number: PCA9541PW/03
• Description: 2-to-1 I2C-bus master selector with interrupt logic and reset
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
21. Contents
1
2
3
4
5
6
7
7.1
7.2
8
8.1
8.2
8.3
8.3.1
8.3.2
8.4
8.4.1
8.4.2
8.4.3
8.4.4
8.4.5
8.5
8.6
8.7
9
9.1
9.2
9.3
9.4
9.5
10
10.1
10.2
10.3
10.4
10.5
11
12
13
14
15
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Ordering information . . . . . . . . . . . . . . . . . . . . . 3
Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pinning information . . . . . . . . . . . . . . . . . . . . . . 5
Functional description . . . . . . . . . . . . . . . . . . . 7
Characteristics of the I
Application design-in information . . . . . . . . . 25
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 29
Static characteristics. . . . . . . . . . . . . . . . . . . . 30
Dynamic characteristics . . . . . . . . . . . . . . . . . 32
Test information . . . . . . . . . . . . . . . . . . . . . . . . 34
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 35
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 6
Device address . . . . . . . . . . . . . . . . . . . . . . . . . 7
Command Code . . . . . . . . . . . . . . . . . . . . . . . . 7
Interrupt Enable and Control registers
description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Register 0: Interrupt Enable (IE) register
(B1:B0 = 00) . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Register 1: Control Register (B1:B0 = 01) . . . 11
Interrupt Status registers . . . . . . . . . . . . . . . . 15
Bus control lost interrupt . . . . . . . . . . . . . . . . . 15
Recovery/initialization interrupt. . . . . . . . . . . . 15
Downstream interrupt . . . . . . . . . . . . . . . . . . . 16
Functional test interrupt . . . . . . . . . . . . . . . . . 16
Register 2: Interrupt Status Register
(B1:B0 = 10) . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Power-on reset . . . . . . . . . . . . . . . . . . . . . . . . 17
External reset . . . . . . . . . . . . . . . . . . . . . . . . . 18
Voltage translation . . . . . . . . . . . . . . . . . . . . . 19
Bit transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
START and STOP conditions . . . . . . . . . . . . . 20
System configuration . . . . . . . . . . . . . . . . . . . 21
Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . 21
Bus transactions . . . . . . . . . . . . . . . . . . . . . . . 22
Specific applications . . . . . . . . . . . . . . . . . . . . 25
High reliability systems . . . . . . . . . . . . . . . . . . 26
Masters with shared resources. . . . . . . . . . . . 27
Gatekeeper multiplexer . . . . . . . . . . . . . . . . . . 27
Bus initialization/recovery to initialize slaves
without hardware reset . . . . . . . . . . . . . . . . . . 28
2
C-bus. . . . . . . . . . . . . 20
2-to-1 I
2
C-bus master selector with interrupt logic and reset
16
16.1
16.2
16.3
16.4
17
18
19
19.1
19.2
19.3
19.4
20
21
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP B.V. 2007.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [e-mail]
Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 40
Revision history . . . . . . . . . . . . . . . . . . . . . . . 41
Legal information . . . . . . . . . . . . . . . . . . . . . . 42
Contact information . . . . . . . . . . . . . . . . . . . . 42
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Introduction to soldering. . . . . . . . . . . . . . . . . 38
Wave and reflow soldering . . . . . . . . . . . . . . . 38
Wave soldering. . . . . . . . . . . . . . . . . . . . . . . . 38
Reflow soldering. . . . . . . . . . . . . . . . . . . . . . . 39
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 42
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Document identifier: PCA9541_5
Date of release: 1 October 2007
PCA9541
All rights reserved.