rtd GPS16162HR, Руководство пользователя

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RTD Embedded Technologies, Inc.
| www.rtd.com 23 GPS16162 User’s Manual
6 Register Address Space
6.1 General Board Control
The I/O map of the GPS16162 occupies a group of eight bytes of host PC I/O space. This window is freely selectable by the user by jumpers
on the base address header.
After setting the base address (GPS Base) you have access to the internal resources of the GPS16162 control
logic.
Table 10: Register Map
ADDRESS (hex) REGISTER DIRECTION COMMENTS
GPS BASE + 0 TXD Read
Standard
16C550 UART
Registers
RXD Write
BAUD div. Low Read/Write
GPS BASE + 1 BAUD div. Low Read/Write
IRQ enable Read/Write
GPS BASE + 2 IRQ ID Read/Write
GPS BASE + 3 Line control Read/Write
GPS BASE + 4 Modem control Read/Write
GPS BASE + 5 Line status Read
GPS BASE + 6 Modem status Read
GPS BASE + 400h Digital I/O Read/Write GPS6160 compatibility DIO
GPS BASE + 401h GPS Status Read/Write Configuration registers
GPS BASE + 402h Reserved
GPS BASE + 403h Reserved
GPS BASE + 404h Digital I/O Read/Write Digital I/O bits 0-7
GPS BASE + 405h Digital I/O Read/Write Digital I/O bits 8-15
GPS BASE + 406h Digital I/O Direction Read/Write Digital I/O direction bits 0-7
GPS BASE + 407h Digital I/O Direction Read/Write Digital I/O direction bits 8-15
GPS BASE + 800h RTD ID Data Read Read next RTD ID Character
GPS BASE + 801h RTD ID Data Read Read next RTD ID Character
GPS BASE + 802h Reset RTD ID Read Reset RTD ID counter
6.1.1 UART I/O (GPS BASE + 0
TO
GPS BASE + 7)
These are the UART registers for the GPS module. These resources are not described in detail, since they are mapped as a standard PC
serial port. For more details on the EXAR 16C550 UART chip programming please download the component specific data from the website:
http://www.exar.com .
6.1.2 GPS S
TATUS
(GPS BASE + 401
H
)
Table 11: GPS STATUS (GPS BASE + 401h)
Default: 0x00
BIT FUNCTION DIRECTION COMMENTS
Bit 0 Reserved
Bit 1 Reserved
Bit 2 Reserved
Bit 3
/EN_INT
Read/Write 0 = GPS interrupts enabled
1 = Disabled
Bit 4 Reserved
Bit 5 Reserved
Bit 6
1PPS/DIO 0
Read/Write 0 = DIO 0
1 = 1PPS
Bit 7 1 PPS Read 1 PPS from GPS
Note: To output 1 PPS out DIO0, DIO0 direction needs set to an output.