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Diffstat (limited to 'docs/install')
| -rw-r--r-- | docs/install/bbb_setup.html | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/docs/install/bbb_setup.html b/docs/install/bbb_setup.html index 0c51251..d1a4e3d 100644 --- a/docs/install/bbb_setup.html +++ b/docs/install/bbb_setup.html @@ -297,6 +297,21 @@ Note: flashrom can never write if the flash chip isn't found automatically. 18 - - 3.3V PSU RED 22 - - NC - this is pin 1 on the flash chip <i>This is how you will connect. Numbers refer to pin numbers on the BBB, on the plugs near the DC jack.</i> + +You may also need to connect pins 1 and 9 (tie to 3.3V supply). These are HOLD# and WP#. +On some systems they are held high, if the flash chip is attached to the board. +If you're flashing a chip that isn't connected to a board, you'll almost certainly +have to connect them. + +SOIC16 pinout (more info available online, or in the datasheet for your flash chip): +HOLD 1-16 SCK +VDD 2-15 MOSI +N/C 3-14 N/C +N/C 4-13 N/C +N/C 5-12 N/C +N/C 6-11 N/C +SS 7-10 GND +MISO 8-9 WP </pre> <p> The following shows how to connect clip to the BBB (on the P9 header), for SOIC-8 (clip: Pomona 5250): @@ -307,6 +322,17 @@ Note: flashrom can never write if the flash chip isn't found automatically. NC - - 21 3.3V PSU RED - - 17 - this is pin 1 on the flash chip <i>This is how you will connect. Numbers refer to pin numbers on the BBB, on the plugs near the DC jack.</i> + +You may also need to connect pins 3 and 7 (tie to 3.3V supply). These are HOLD# and WP#. +On some systems they are held high, if the flash chip is attached to the board. +If you're flashing a chip that isn't connected to a board, you'll almost certainly +have to connect them. + +SOIC8 pinout (more info available online, or in the datasheet for your flash chip): +SS 1-8 VDD +MISO 2-7 HOLD +WP 3-6 SCK +GND 4-5 MOSI </pre> <p> <b>NC = no connection</b> |