R
Functional Description
Set PROG_B Low
after Power-On
Power-On
VCCINT >1V
and VCCAUX > 2V
No
and VCCO Bank 4 > 1V
Yes
Yes
Clear configuration
memory
PROG_B = Low
No
No
INIT_ B = High?
Yes
M[2:0] and VS[2:0]
pins are sampled on
INIT_B rising edge
Sample mode pins
Load configuration
data frames
No
INIT_B goes Low.
Abort Start-Up
CRC
correct?
Yes
DONE pin goes High,
signaling end of
configuration
Start-Up
sequence
User mode
No
Yes
Reconfigure?
DS312-2_58_021404
Figure 64: General Configuration Process
DS312-2 (v1.1) March 21, 2005
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