Altera PCI Compiler - Manual (Page 191)

Altera Corporation User Guide Version 11.1 3–117
October 2011
Functional Description
Figure 3–41. Burst Memory Write Master Transaction with PCI Wait State
Notes to Figure 3–41 :
(1) This signal is not applicable to the pci_mt32 MegaCore function.
(2) For pci_mt32, lm_req32n should be substituted for lm_req64n for 32-bit master transactions.
Burst Memory Write Master Transactions with Variable Byte Enables
Figure 3–42 shows a burst memory write master transaction using
variable byte enables. To allow this type of transaction, turn on Allow
Variable Byte Enables During Burst Transactions
on the Advanced PCI
2 3 4 5 6 7 9 10 12
clk
reqn
8 11 1
gntn
ad[31..0]
(1) ad[63..32]
cben[3..0]
(1) cben[7..4]
par
(1) par64
framen
(1) req64n
irdyn
devseln
(1) ack64n
trdyn
stopn
Adr
7
Adr-PAR
BE_L
D0_L 0
0
0
0
D1_L
13
(1), (2) lm_req64n
lm_lastn
lm_adr_ackn
lm_rdyn
lm_tsr[9..0] 000 001 004 002 308 008 208 000
(1) l_ldat_ackn
(1) l_hdat_ackn
lm_ackn
lm_dxfrn
D0_H
D3_L
BE_H
D0-L-PAR D3-L-PAR
D0-H-PAR D3-H-PAR
Z
Z
Z
D1_H D3_H Z
14
208 308
l_adi[31..0] Adr
7
(1) l_adi[63..32] D0_H
D0_L
D3_H
D3_L D1_L
D1_H
l_cbeni[3..0] BE_L
(1) l_cbeni[7..4] BE_H
D2_L
D2_H
D2-H-PAR
D2-L-PAR D1-L-PAR
D1-H-PAR
D2_L
D2_H