COBHAM GR716-DEV, Быстрый старт

Страница: 18 / 31

Doc. No: GR716-DEV-QSG
Issue: 0 Rev.: 2
Date: 2019-05-02 Page: 18 of 31
Status: Draft
3.5.2 Remote boot
This section lists external memory boot configurations i.e. when S1-8 is Open. Note that list only
includes valid configurations for the GR716 Development Board.
Table 2 Remote boot configurations for GR716 Development board
S1 1
(PLL)
S1 2
(Bypass ROM)
S1 3
(Disable test)
S1 4
(SpW Freq)
S1 5
(SpW Freq)
S1 6
(Source)
S1 7
(Source)
S1 8
(Remote)
Comment
Open Closed Closed Closed** Closed** Closed Closed Open Remote boot via
SpaceWire RMAP
using a crystal
oscillator of 25 MHz
Closed* Closed Closed Don't care Don't care Closed Closed Open Remote boot via
SpaceWire RMAP
using an external
frequency of 50 MHz
Don't care Closed Closed Don't care Don't care Open Closed Open Remote boot via SPI
Don't care Closed Closed Don't care Don't care Closed Open Open Remote boot via I2C
Don't care Closed Closed Don't care Don't care Open Open Open Remote boot via
UART
* Requires external SpaceWire clock at running 50 Mhz
** Possible to change crystal oscillator. See section 3.7
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