GNS 5894TAC StarterKit Quick guide
confidential
information
manual
V 0.9, Oct 5
th
2020
6
J
UMPER AND
C
ONNECTOR
D
ESCRIPTION
C
ONNECTOR
P
IN
S
IGNAL
D
ESCRIPTION
JP
1: GND
2: RxD (GNS5894TAC ser. input)
3: TxD (GNS5894TAC ser. utput)
4: CTS (H/W handshake CTS input)
5: RTS (H/W handshake RTS utput)
6: 3.3V
7: GND
8: \RESET GNS5894TAC, active LOW
Direct access t GNS5894TAC UART.
UART I/O V ltage is 3.3V.
JP2
1: GND
2: \RESET FTDI, active LOW
Open : Operati n via USB P rt
Cl sed : USB t serial c nverter is
disabled, ser. P rt (JP1) can be
accessed.
JP6
1: GND
2: RxD2 (ser.Data fr m GNSS m dule)
3: TxD2 (ser.Data t GNSS m dule)
4: PPS (PPS pulse fr m GNSS m dule)
5: 3.3V
Serial data c nnecti n with GNSS
m dule. I/O v ltage is 3.3V.
P
ROT
.
SEL
.
1: PS input (pulled up internally)
2: GND
Open : ‘Text’ pr t c l (AVR m de)
Cl sed : ‘HULC’ pr t c l
Descripti n f ADS-B frame indicat r:
ADS-B frame indicator
Comment
blinking M de-S and/ r M de-A/C frames are received and utput via the serial
interface.
ff N data is received ( r the h/w handshake f the serial interface is n t active).
3GNS5894TAC StarterKit Board Block Diagram
GNS5894TAC
module
miniUSB
c nnect r Serial t USB
external active
GNSS antenna
c nnect r
Internal access t
TxD / RxD / RTS / CTS
LDO
5V 3.3V
supply
GNS3303
GNSS
external 1090MHz
data
PS
