u-blox ZED-F9P, Описание интерфейса

Страница: 80 / 267

u-blox ZED-F9P Interface Description - Manual
Advance Information
CFG-PRT continued
Byte Offset Number
Format
Scaling Name Unit Description
4 X4 -
mode
- DDC Mode Flags (see graphic below )
8 U1[4] -
reserved2
- Reserved
12 X2 -
inProtoMask
- A mask describing which input protocols are
active.
Each bit of this mask is used for a protocol.
Through that, multiple protocols can be defined
on a single port. (see
graphic below )
14 X2 -
outProtoMask
- A mask describing which output protocols are
active.
Each bit of this mask is used for a protocol.
Through that, multiple protocols can be defined
on a single port. (see
graphic below )
16 X2 -
flags
- Flags bit mask (see graphic below )
18 U1[2] -
reserved3
- Reserved
Bitfield txReady
This graphic explains the bits of
txReady
Name Description
en Enable TX ready feature for this port
pol
Polarity
0 High-active
1 Low-active
pin PIO to be used (must not be in use already by another function)
thres
Threshold
The given threshold is multiplied by 8 bytes.
The TX ready PIN goes active after >= thres*8 bytes are pending for the port and going inactive after the last
pending bytes have been written to hardware (0-4 bytes before end of stream).
0x000 no threshold
0x001 8byte
0x002 16byte
...
0x1FE 4080byte
0x1FF 4088byte
UBX-18010854 - R04 Advance Information Page 72 of 259