nRF24LE1 Nordic VLSI, nRF24LE1 Datasheet - Page 137

• Manufacturer Part Number: nRF24LE1
• Manufacturer: Nordic VLSI

nRF24LE1 Preliminary Product Specification
For instance, to read the output mode of pin P0.5 : Write to P0CON with a bitAddr value of 3'b101, a
readAddr value of 1 and a inOut value of 0 (output). Then read from P0CON . The output mode of pin 5 is
now found in bits 7:5 of the read data.
Revision 1.1
7:5
4
3
2:0
Bit
Register name: P0CON
pinMode
inOut
readAddr
bitAddr
Name
RW
W
W
W
RW
Functional input or output mode for pins P0.0 – P0.7.
For a write operation: The functional mode you would like to
write to the pin. The inOut field determines if the input or output
mode is written, the bitAddr field determines which pin is
affected.
Output modes using bits 7:5:
Input modes using bits 6:5:
For a read operation: The current functional mode of the pin. The
inOut field determines if the input or output mode is reported,
while the bitAddr field indicates which pin is selected.
This bit indicates if the current write operation relates to the input
or output configuration of the addressed pin.
If this bit is set, the purpose of the current write operation is to
provide the bit address for later read operations. Consequently,
the value of the bitAddr field is saved. The value of the inOut field
is also saved, determining if the input or output mode is to be
read. The pinMode field is ignored when readAddr is set.
If this bit is not set, the pin mode of the addressed pin is updated
with the value of the pinMode field. The inOut field determines if
the input or output mode is updated.
If the readAddr bit is set, the value of the bitAddr field is stored.
For subsequent read operations from P0CON, the pin for which
the pinMode will be returned is given by the list below.
3’b000
3’b011
(all other value combinations are illegal)
2’b00 Digital input buffer on, no pull up/down resistors
2’b01 Digital input buffer on, pull down resistor connected
2’b10 Digital input buffer on, pull up resistor connected
2’b11 Digital input buffer off
inOut = 0
inOut = 1
bitAddr = 3’b000
bitAddr = 3’b001
bitAddr = 3’b010
bitAddr = 3’b011
bitAddr = 3’b100
bitAddr = 3’b101
bitAddr = 3’b110
bitAddr = 3’b111
Table 81. P0CON register
Address: 0x9E
137 of 191
Digital output buffer high drive strength
Digital output buffer normal drive strength
-
-
Operate on the output configuration
Operate on the input configuration
-
-
-
-
-
-
-
-
7x7mm
P0.7
P0.3
P0.6
P0.0
P0.1
P0.2
P0.4
P0.5
Function
5x5mm
P0.7
P0.3
P0.6
P0.0
P0.1
P0.2
P0.4
P0.5
Reset value: 0x00
4x4mm
reserved
P0.3
P0.6
P0.0
P0.1
P0.2
P0.4
P0.5