RF31 Hope Microelectronics co., Ltd, RF31 Datasheet - Page 79

• Manufacturer Part Number: RF31
• Description: Rf31 Ism Receiver
• Manufacturer: Hope Microelectronics co., Ltd

Register 0Ch. GPIO Configuration 1
Reset value = 00000000
Name
Type
Bit
7:6
4:0
Bit
5
Tel: [phone]
gpiodrv1[1:0]
D7
gpio1[4:0]
gpiodrv1[1:0]
Name
Pup1
R/
w
D6
GPIO Driving Capability Setting.
Pullup Resistor Enable on GPIO1.
When set to 1 the a 200 KΩ
and the pin if the GPIO is configured as a digital input.
GPIO1 pin Function Select.
00000: Inverted Power-On-Reset (output)
00001: Wake-Up Timer: 1 when WUT has expired (output)
00010: Low Battery Detect: 1 when battery is below threshold setting (output)
00011: Direct Digital Input
00100: External Interrupt, falling edge (input)
00101: External Interrupt, rising edge (input)
00110: External Interrupt, state change (input)
00111: ADC Analog Input
01000: Reserved (Analog Test N Input)
01001: Reserved (Analog Test P Input)
01010: Direct Digital Output
01011: Reserved (Digital Test Output)
01100: Reserved (Analog Test N Output)
01101: Reserved (Analog Test P Output)
01110: Reference Voltage (output)
01111: RX Data CLK output to be used in conjunction with RX Data pin
10000: Reserved
10001: External Retransmission Request (input)
10010: Reserved
10011: Reserved
10100: RX Data (output)
10101: RX State (output)
10110: RX FIFO Almost Full (output)
10111: Antenna 1 Switch used for antenna diversity (output)
11000: Antenna 2 Switch used for antenna diversity (output)
11001: Valid Preamble Detected (output)
11010: Invalid Preamble Detected (output)
11011: Sync Word Detected (output)
11100: Clear Channel Assessment (output)
11101: VDD
Fax: [phone]
else : GND
pup1
R/
(output)
D5
w
D4
E-mail: [e-mail]
 r esistor is connected internally between VDD
Function
D3
Gpio1[4:0]
R/
D2
w
http://www.hoperf.com
R F 3 1
D1
D0
79