GPS
Product series
With HOLUX, You never lose the way!
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: 886-3-6687000 FAX:886-3-6687111 E-mail:[email protected] http:www.holux.com.tw
Pin assignment
Pin Pin Name Type
Function description
1
FREQ_XFER
I
Connect to GSC3 ECLK
2
NC
NC
3
NC
NC
4
RXDB
I
Serial Data input B
5
RXDA
I
Serial Data input A
6
TXDA
O Serial Data Output A
7
GPIO4
I/O General purpose I/O. Keep floating if not used.
8
GPIO9
I/O General purpose I/O, TIME_MARK 1 PPS output, 1us/sec
9
NC
NC
10
GPIO13
I/O General purpose I/O. Keep floating if not used.
11
GPIO0
I/O General purpose I/O. Keep floating if not used.
12
GPIO1
I/O General purpose I/O. Keep floating if not used.
13
GPIO14
I/O General purpose I/O, LED ON/OFF, flash when position fixed.
14
GND
PWR Ground
15
VCC_IN
PWR 3.3 ~ 5 V supply input
16
DV15
PWR Apply 1.5V DC for RTC and SRAM. Keep floating if not used.
17
BOOT_SEL
I
Pull high for firmware download mode. Keep floating if not used.
18
NRESET
I
Reset, active low. Keep floating if not used.
19
GPIO15
I/O General purpose I/O. Keep floating if not used.
20
GND
PWR Ground
21
NC
NC
22
NC
NC
23
TXDB
O Serial Data input B
24
NC
NC
25
ANTPWR*
PWR NC, 2.85V is supplied internally to active antenna
26
GND
PWR Ground
27
RFIN
I
RF signal input
28
GND
PWR Ground
*ANTPWR is NC in GR-88-A. ANTPWR must supply 2.85V ~ 5V in GR-88-B.
