RF60 Datasheet, PDF (123/157 Pages) –

RF60 CRYSTAL-LESS SOC TRANSMITTER v1.0
SFR Definition 29.6. PORT_CTRL
Bit
7
Name ^PORT_
STROBE
6
PORT_
ROFF
Type ^R/W
R/W
Reset
0
—
5
PORT_
MATRIX
R/W
—
4
PORT_
DRV2X
R/W
0
3
PORT_5_
MID-
RANGE
R/W
0
2
PORT_
MID-
RANGE
R/W
0
1
0
PORT_LED[1:0]
R/W
R/W
0
0
SFR Address = 0xB5
Bit Name
Function
7 PORT_ Port Strobe.
STROBE Strobe the port_matrix and port_roff bits values from this register to the GPIO pads.
The operation requires additional 2 CPU clock to finish after writing 0->1->0 to this bit.
When 1 is written to this bit the GPIO latches open and the values of port_matrix and
port_off are propagated to GPIO pads. Software must clear this bit to capture those
two bits in the GPIO pads internal HV permanent latches.
6 PORT_ Port Roff Mode.
ROFF Roff mode, read from this bit returns the actual Roff mode value as reported from
GPIO pad. When a 1 is latched into the GPIO pad internal Roff mode HV latch then
the GPIO Roff mode gets invoked. The GPIO[1:2] will have their pull-up resistors
turned off.
5 PORT_ Port Matrix Mode.
MATRIX _{Matrix mode, read from this bit returns the actual value matrix mode value as reported}
from GPIO pad. When a 1 is latched into the GPIO pad internal matrix mode HV latch
then the GPIO matrix mode gets invoked. The GPIO[1:3] are driven low with resistor
pull-ups disabled. This is intended for matrix button mode to wake up from sleep
mode.
4 PORT_ Increase drive strength by 2x on all outputs.
DRV2X
3 PORT_5_ Input GPIO[5] pin trip point set to 45% VDD.
MIDRANGE
2 PORT_ Input GPIO pin trip point set to 45% VDD (except GPIO[5])
MIDRANGE
1:0 PORT_LED LED current drive strength.
[1:0] _{It must be set to non-zero value for LED to have any current. This is just a current}
source setting. The actual turning of the LED on and off is controlled by the GPIO[5]
output bit in P0.
00: LED off
01: LED current = 0.62*600uA
10: LED current = 1.00*600uA
11: LED current = 1.62*600uA
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