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AR# 34885

11.4 Spartan-6 Place - LX25 device has BUFIO2 pin compatibility issue with other devices

Description

It has been discovered that the Spartan-6 LX25 device has an issue that affects pin compatibility with other devices in the family. The issue affects left and right side BUFIO2s. There are 6 IOBs on each side that have a difference in which BUFIOs can be used to source the clock.


Solution

There are 12 pins affected by this issue: H3, H4, K5, K6, L5, L7, J13, K14, L12, L13, K15, and K16. If these pins are driven by a BUFIO2, then the LX25 is not pin compatible with the LX16 or LX45.


LX16LX25LX45
PAD67-pin = F15PAD59-pin = F15PAD47 -pin = F15
PAD68-pin = F16 PAD60-pin = F16PAD48 -pin = F16
PAD69-pin = C17PAD65-pin = C17PAD77 -pin = C17
PAD70-pin = C18 PAD66-pin = C18PAD78 -pin = C18
PAD71-pin = F14PAD67-pin = F14 PAD79 -pin = F14
PAD72-pin = G14PAD68-pin = G14PAD80 -pin = G14
PAD73-pin = D17 PAD69-pin = D17PAD81 -pin = D17
PAD74-pin = D18PAD70-pin = D18PAD82 -pin = D18
PAD75-pin = H12PAD71-pin = H12PAD83 -pin = H12
PAD76-pin = G13PAD72-pin = G13PAD84 -pin = G13
PAD77-pin = E16PAD73-pin = E16PAD85 -pin = E16
PAD78-pin = E18PAD74-pin = E18PAD86 -pin = E18
PAD79-pin = K12PAD75-pin = K12PAD87 -pin = K12
PAD80-pin = K13PAD76-pin = K13PAD88 -pin = K13
PAD81-pin = F17PAD77-pin = F17PAD89 -pin = F17
PAD82-pin = F18PAD78-pin = F18PAD90 -pin = F18
PAD83-pin = H13PAD79-pin = H13PAD91 -pin = H13
PAD84-pin = H14PAD80-pin = H14PAD92 ?pin = H14
PAD85-pin = H15PAD81-pin = H15PAD93 -pin = H15
PAD86-pin = H16PAD82-pin = H16PAD94 -pin = H16
PAD87-pin = G16PAD83-pin = G16PAD95 -pin = G16
PAD88-pin = G18PAD84-pin = G18PAD96 -pin = G18
PAD89-pin = J13 PAD97 -pin = J13
PAD90-pin = K14 PAD98 -pin = K14
PAD91-pin = L12 PAD99 -pin = L12
PAD92-pin = L13 PAD100-pin = L13
PAD93-pin = K15 PAD101-pin = K15
PAD94-pin = K16 PAD102-pin = K16

AR# 34885
Date Created 03/23/2010
Last Updated 09/09/2010
Status Active
Type General Article
Devices
  • Spartan-6 LX
Tools
  • ISE Design Suite - 11.4
  • ISE Design Suite - 11.5
  • ISE Design Suite - 12.1