PCA9698DGG datasheet(9/47 Pages) PHILIPS

9 / 47 page

PCA9698_2

Product data sheet

Rev. 02 — 19 July 2006

9 of 47

Philips Semiconductors

PCA9698

40-bit Fm+ I2C-bus advanced I/O port with RESET, OE and INT

7.3.1 5-bank register category

• IP – Input registers

• OP – Output registers

• PI – Polarity Inversion registers

• IOC – I/O Conﬁguration registers

• MSK – Mask interrupt registers

If the Auto-Increment ﬂag is set (AI = 1), the 3 least signiﬁcant bits are automatically

incremented after a read or write. This allows the user to program and/or read the

5 register banks sequentially.

If more than 5 bytes of data are written and AI = 1, previous data in the selected registers

will be overwritten or reread. Reserved registers are skipped and not accessed (refer to

Table 3).

If the Auto-Increment ﬂag is cleared (AI = 0), the 3 least signiﬁcant bits are not

incremented after data is read or written, only one register will be repeatedly read or

written.

7.3.2 1-bank register category

• OUTCONF – Output Structure Conﬁguration register

• ALLBNK – All Bank Control register

• MODE – Mode Selection register

If more than 1 byte of data is written or read, previous data in the same register is

overwritten independently of the value of AI.

7.4 Register deﬁnitions

Table 3.

Reg #

Name

Type

Function

Input Port registers

00h

000000IP0

read only

Input Port register bank 0

01h

000001IP1

read only

Input Port register bank 1

02h

000010IP2

read only

Input Port register bank 2

03h

000011IP3

read only

Input Port register bank 3

04h

000100IP4

read only

Input Port register bank 4

05h

000101-

reserved for future use

06h

000110-

reserved for future use

07h

000111-

reserved for future use

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