PCA9505 NXP [NXP Semiconductors], PCA9505 Datasheet - Page 10

• Manufacturer Part Number: PCA9505
• Description: 40-bit I2C-bus I/O port with RESET, OE and INT
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
Table 3.
Table 4.
Legend: * default value ‘X’ determined by the externally applied logic level.
PCA9505_9506_3
Product data sheet
Register #
(hex)
Mask Interrupt registers
20
21
22
23
24
25
26
27
Address
00h
01h
02h
03h
04h
Register summary
IP0 to IP4 - Input Port registers (address 00h to 04h) bit description
D5
1
1
1
1
1
1
1
1
Register
IP0
IP1
IP2
IP3
IP4
7.3.1 IP0 to IP4 - Input Port registers
D4
0
0
0
0
0
0
0
0
These registers are read-only. They reflect the incoming logic levels of the port pins
regardless of whether the pin is defined as an input or an output by the I/O Configuration
register. If the corresponding Px[y] bit in the PI registers is set to logic 0, or the inverted
incoming logic levels if the corresponding Px[y] bit in the PI register is set to logic 1. Writes
to these registers have no effect.
The Polarity Inversion register can invert the logic states of the port pins. The polarity of
the corresponding bit is inverted when Px[y] bit in the PI register is set to logic 1. The
polarity of the corresponding bit is not inverted when Px[y] bits in the PI register is set to
logic 0.
D3
0
0
0
0
0
0
0
0
Bit
7 to 0
7 to 0
7 to 0
7 to 0
7 to 0
…continued
D2
0
0
0
0
1
1
1
1
D1
0
0
1
1
0
0
1
1
Symbol
I0[7:0]
I1[7:0]
I2[7:0]
I3[7:0]
I4[7:0]
D0
0
1
0
1
0
1
0
1
Rev. 03 — 6 June 2007
Symbol
MSK0
MSK1
MSK2
MSK3
MSK4
-
-
-
Access
R
R
R
R
R
40-bit I
Access
read/write
read/write
read/write
read/write
read/write
-
-
-
Value
XXXX XXXX*
XXXX XXXX*
XXXX XXXX*
XXXX XXXX*
XXXX XXXX*
2
C-bus I/O port with RESET, OE and INT
Description
Mask Interrupt register bank 0
Mask Interrupt register bank 1
Mask Interrupt register bank 2
Mask Interrupt register bank 3
Mask Interrupt register bank 4
reserved for future use
reserved for future use
reserved for future use
Description
Input Port register bank 0
Input Port register bank 1
Input Port register bank 2
Input Port register bank 3
Input Port register bank 4
PCA9505/06
© NXP B.V. 2007. All rights reserved.
10 of 31