pca9575 NXP Semiconductors, pca9575 Datasheet - Page 15

• Manufacturer Part Number: pca9575
• Description: 16-bit I2c-bus And Smbus, Level Translating, Low Voltage Gpio With Reset And Interrupt
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCA9575_1
Product data sheet
7.6.10 Register 9 - Configuration port 1 register
7.6.9 Register 8 - Configuration port 0 register
This register configures the direction of the I/O pins. If a bit in this register is set (written
with logic 1), the corresponding port 0 pin is enabled as an input with high-impedance
output driver. If a bit in this register is cleared (written with logic 0), the corresponding
port 0 pin is enabled as an output. At reset, the device’s ports are inputs.
Table 12.
Legend: * default value.
This register configures the direction of the I/O pins. If a bit in this register is set (written
with logic 1), the corresponding port 1 pin is enabled as an input with high-impedance
output driver. If a bit in this register is cleared (written with logic 0), the corresponding
port 1 pin is enabled as an output. At reset, the device’s ports are inputs.
Table 13.
Legend: * default value.
Bit
7
6
5
4
3
2
1
0
Bit
7
6
5
4
3
2
1
0
Symbol
C0.7
C0.6
C0.5
C0.4
C0.3
C0.2
C0.1
C0.0
Symbol
C1.7
C1.6
C1.5
C1.4
C1.3
C1.2
C1.1
C1.0
Register 8 - Configuration port 0 register (address 08h) bit description
Register 9 - Configuration port 1 register (address 09h) bit description
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Rev. 01 — 2 October 2008
16-bit I
2
Value
1*
1*
1*
1*
1*
1*
1*
1*
Value
1*
1*
1*
1*
1*
1*
1*
1*
C-bus and SMBus, level translating, low voltage GPIO
Description
configures the direction of the I/O pins
Description
configures the direction of the I/O pins
0 = corresponding port pin enabled as an output
1 = corresponding port pin configured as input
(default value)
0 = corresponding port pin enabled as an output
1 = corresponding port pin configured as input
(default value)
PCA9575
© NXP B.V. 2008. All rights reserved.
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