Altera PCI Compiler - Manual (Page 173)

Altera Corporation User Guide Version 11.1 3–99
October 2011
Functional Description
Figure 3–32 shows the same transaction as in Figure 3–31 , but the local
side master interface requests a 32-bit transaction by asserting
lm_req32n
. This figure applies to both pci_mt64 and pci_mt32,
excluding the 64-bit extension signals as noted for pci_mt32. The
pci_mt64
function does not assert req64n on the PCI side. Therefore,
the upper address ad[63..32] and the upper command/byte enables
cben[7..4]
are invalid.
Figure 3–32. 32-Bit PCI & 32-Bit Local-Side Master Burst Memory Read Transaction
Note to Figure 3–32 :
(1) This signal is not applicable to the pci_mt32 MegaCore function.
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) Êack64n
trdyn
stopn
Adr
6
Adr-PAR
BE_L
Z
D0_L Z 0
0
Z D1_L D2_L
13
Z
D0-L-PAR D2-L-PAR D1-L-PAR
l_dato[31..0] D0_L D1_L D2_L
(1) l_dato[63..32]
lm_req32n
lm_lastn
lm_adr_ackn
lm_rdyn
lm_tsr[9..0] 000 001 004 002 108 008 000
l_ldat_ackn
l_hdat_ackn
lm_ackn
lm_dxfrn
l_adi[31..0]
l_cbeni[3..0]
(1) l_cbeni[7..4]
Adr
BE_L 6