Altera PCI Compiler - Manual (Page 188)

3–114 User Guide Version 11.1 Altera Corporation
PCI Compiler October 2011
Master Mode Operation
Figure 3–39 shows the same transaction as in Figure 3–42 , 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 3–39. 32-Bit PCI & 32-Bit Local-Side Burst Memory Write Master Transaction
Note to Figure 3–39 :
(1) This signal is not applicable to the pci_mt32 MegaCore function.
2 3 4 5 6 7 9 10
clk
reqn
8 11 1
gntn
ad[31..0]
cben[3..0]
par
framen
(1) req64n
irdyn
devseln
(1) ack64n
trdyn
stopn
Adr
7
Adr-PAR
0
0
D1_L D2_L
lm_req32n
lm_lastn
lm_adr_ackn
lm_rdyn
lm_tsr[9..0] 000 001 004 002 108 008 000
(1) l_ldat_ackn
(1) l_hdat_ackn
lm_ackn
lm_dxfrn
BE_L
D1-L-PAR D2-L-PAR
Z
Z
D0_L
D0-L-PAR
l_adi[31..0] Adr
7
(1) l_adi[63..32]
D0_L D1_L D2_L
l_cbeni[3..0] BE_L
(1) l_cbeni[7..4]