11
4
9.3 Daughter Board Stack
A maximum of 3 daughter boards can be stacked. When multiple daughter boards are stacked, care should be
taken for electric capacity. Figure 9.2 shows an example of daughter board stacks.
Figure 9.2 Daughter Board Stack
9.4 Daughter Board WAIT# Output
Solution Engine2 is provided with a WAIT# input pin on the extension slot for WAIT input to the daughter board.
When a WAIT# is output from the daughter board, open collector output must take place to prevent a collision of
WAIT# output when multiple daughter boards are stacked.
Figure 9.3 Extension Slot IORDY Pin Structure
Solution Engine2
Extension slot: 20-5603-14-0101-861
Extension slot: 10-5603-14-0101-861
Extension slot: 20-5603-14-0101-861
Extension slot: 10-5603-14-0101-861
Extension slot: 20-5603-14-0101-861
Daughter board
Daughter board
Solution Engine2
SH7760
/RDY
(Active Low)
FPGA
3.3V
Extension slot
680 ohm
Extension slot
WAIT#
(Active Low)
WAIT#
(Active Low)
Extension slot device
Open collector output
Daughter Board