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RoyalTek Confidential 10
REB-4315 Operational Manual
9 nRESET Input
External reset input with
internal pull-up, active
low.
Vil ：-0.4v~0.45v
Vih ：1.26v~1.8v
(CMOS I/O run from 1.8v)
10 ON/OFF Input
Power control pin.
Need a pulse to ON or
OFF the Chip set.
Vil ：-0.4v~0.45v
Vih ：1.26v~3.6v
(CMOS I/O run from 1.8v)
11 NC Non connect
12 VCC_IN_1V8 Input
Single voltage supply of
1.8v.
Max. 1.89v
13 DR_I2C_DIO Reserved Reserved.
14 DR_I2C_SCK Reserved Reserved.
15 GPIO-2 Reserved Reserved.
16 BOOT Input Boot select.
Vil ：-0.4v~0.45v
Vih ：1.26v~1.8v
(CMOS I/O run from 1.8v)
17 Wakeup Output
Indicate the state of the
chip set.
Vol Max：0.4v
Voh Min：1.35v
(CMOS I/O run from 1.8v)
18 GND Ground
19 GPS_RF_IN Input GPS Signal input.
20 GND Ground
21 GND Ground
22 GND Ground
VCC_IN_1V8 (Power Input)
This is the DC power supply input pin for GPS system. It provides voltage to
module.
Shutdown
Shutdown the REB-4315 module, don’t remove the Vcc_IN_1V8 Pin, You should use
on/off pulse make the chip into Hibernate mode.(It’s will keep the receiver’s SRAM
data integrity)
GND provides the reference ground.
Boot(CMOS I/O run from 1.8v)
Set this pin to high for programming flash.
Normal operation mode it is set to low voltage.