PCA9698BS,118

PCA9698

All information provided in this document is subject to legal disclaimers.

© NXP B.V. 2010. All rights reserved.

Product data sheet

Rev. 3 — 3 August 2010 

15 of 48

NXP Semiconductors

PCA9698

40-bit Fm+ I

2

C-bus advanced I/O port with RESET, OE and INT

If ALLBNK = 1XX0 1100:

All I/Os configured as outputs in Bank 2 and 3 will be programmed with 1s, overwriting 
values programmed in the Output Port registers 2 and 3, while I/Os configured as 
outputs in Bank 0, 1, and 4 are programmed with values in Output Port registers 0, 1, 
and 4.

7.4.8 MODE - PCA9698 mode selection register

 

This register allows programming of the PCA9698 modes.

OEPOL bit controls the polarity of OE pin.

– OEPOL = 0: OE pin is active LOW.

– OEPOL = 1: OE pin is active HIGH (equivalent to OE pin).

OCH bit selects the I

2

C-bus event where the state of the I/Os configured as outputs 

change.

– OCH = 0: outputs change on STOP command.

– OCH = 1: outputs change on ACK.

IOAC bit controls the ability of the device to respond to a ‘GPIO All Call’ command 
(see 

Section 7.6 “GPIO All Call”

 for more information), allowing programming of more 

than one device at the same time.

– IOAC = 0: The device cannot respond to a ‘GPIO All Call’ command.

– IOAC = 1: The device can respond to a ‘GPIO All Call’ command.

Remark: The ‘GPIO ALL CALL’ command defined for the PCA9698 is different from 
the I

2

C-bus protocol ‘General Call’ command.

SMBA bit controls the capability of the PCA9698 to respond to a SMBAlert command.

– SMBA = 0: PCA9698 does not respond to an Alert Response Address.

– SMBA = 1: PCA9698 responds to an Alert Response Address. Bits 5, 6 and 7 are 

reserved and must be programmed with 0s.

Unused bits (bits 2, 5, 6 and 7) must be programmed with 0s for proper device 
operation.

Table 11.

MODE - mode selection register (address 2Ah) description

Bit

7

6

5

4

3

2

1

0

Symbol

X

X

X

SMBA

IOAC

X

OCH

OEPOL

Default

0

0

0

0

0

0

1

0

PCA9698BS,118 Information:
Part No.
PCA9698BS,118

RFQ

Description
IC I/O EXPANDER I2C 40B 56HVQFN
File Size
370946 bytes
Page Size
595.22 x 842 pts (A4)
All Pages
48
Manufacturer
NXP Semiconductors
Homepage
http://www.nxp.com/
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