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CYWUSB6953 Datasheet(PDF) 37 Page - Cypress Semiconductor

Part # CYWUSB6953
Description  Programmable Radio on Chip Low Power
PDF  68 Pages
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Manufacturer  CYPRESS [Cypress Semiconductor]
Direct Link  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

CYWUSB6953 Datasheet(HTML) 37 Page - Cypress Semiconductor

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CYRF69103
Document #: 001-07611 Rev *F
Page 37 of 68
19. General Purpose I/O Ports
The general purpose I/O ports are discussed in the following sections.
19.1 Port Data Registers
Table 19-1. P0 Data Register (P0DATA)[0x00] [R/W]
Bit #
7
6
5
4
3
2
1
0
Field
P0.7
Reserved
P0.4/INT2
P0.3/INT1
Reserved
P0.1
Reserved
Read/Write
R/W
-
R/W
R/W
-
R/W
-
Default
0
-
-
0
00
0
-
This register contains the data for Port 0. Writing to this register sets the bit values to be output on output enabled pins. Reading
from this register returns the current state of the Port 0 pins.
Bit 7
P0.7 Data
Bits 6:5
Reserved
Bits 4:3
P0.4–P0.3Data/INT2–INT1
In addition to their use as the P0.4–P0.3 GPIOs, these pins can also be used for the alternative functions as the
Interrupt pins (INT1–INT2). To configure the P0.4–P0.3 pins, refer to the P0.3/INT1–P0.4/INT2 Configuration
Register (Table 19-5 on page 39).
Bit 2
Reserved
Bit 1
P0.1 Data
Bit 0
Reserved
Table 19-2. P1 Data Register (P1DATA) [0x01] [R/W]
Bit #
7
6
5
4
3
2
1
0
Field
P1.7
P1.6
P1.5/SMOSI P1.4/SCLK
P1.3/SSEL
P1.2
P1.1
P1.0
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Default
0
0
0
0
0
0
0
-
This register contains the data for Port 1. Writing to this register sets the bit values to be output on output enabled pins. Reading
from this register returns the current state of the Port 1 pins.
Bits 7
P1.7
Bits 6
P1.6 or alternate function of SMOSI in a 4-wire SPI
Bits 5:3
P1.5–P1.3 Data/3-wire SPI Pins (SMISO/SMOSI, SCLK, SSEL)
In addition to their use as the P1.6–P1.3 GPIOs, these pins can also be used for the alternative function as the
SPI interface pins. To configure the P1.6–P1.3 pins, refer to the P1.3–P1.6 Configuration Register (Table 19-10 on
page 41)
Bits 2:1
P1.2–P1.1
Bit 0
P1.0
Table 19-3. P2 Data Register (P2DATA) [0x02] [R/W]
Bit #
7
6
5
4
3
2
1
0
Field
Reserved
P2.1–P2.0
Read/Write
-R/W
R/W
Default
-0
0
This register contains the data for Port 2. Writing to this register sets the bit values to be output on output enabled pins. Reading
from this register returns the current state of the Port 2 pins.
Bits 7:2
P2 Data [7:2]
Bits 1:0
P2 Data [1:0]
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