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Re:DEVSEL#

Hello Chun,

Yes you  are very true in your analogy ie,
all targets will latch the address and the
target for which the address matches with its
BARs generates the DEVSEL#

For this refer to PCI Specs 2.2:
# Pg 27 section 3.2.2 last paragraph
# Pg 88 section 3.6.1

rgds
Nimit Endlay 
Design Engineer
ST Microelectronics


! Dear Group:
! 
! I have a question related to DEVSEL# assertion time.
! There are 4 device select speed--fast, medium, slow, and substrative.
! Will the master holds the AD(address) and C/BE#(command) data valid
till it
! receive DEVSEL# from target?
! My analogy is:
! The target agent is required to latch the valid "address" and "command"
upon
! FRAME# assertion.
! Am I right?
! 
! Please also advice where I could find this piece of information in PCI
spec
! 2.2.
! I had no luck finding it earlier.
! 
! Thanks in advance.
! 
! Chun-Hung Lin
! 
!