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Address decoding
262
NS9750 Hardware Reference
The internal registers, unlike system memory, can be accessed only in privileged
access mode. Privileged access mode is indicated when
HPROT[1] is active high.
Table 167 shows the
hmaster[3:0] assignments for NS9750.
0xA010 0000 – 0xA01F FFFF 1 MB PCI CONFIG_ADDR
0xA020 0000 – 0xA02F FFFF 1 MB PCI CONFIG_DATA
0xA030 0000 – 0xA03F FFFF 1 MB PCI arbiter
0xA040 0000 – 0xA04F FFFF 1 MB BBUS-to-AHB bridge
0xA050 0000 – 0xA05F FFFF 1 MB Reserved
0xA060 0000 – 0xA06F FFFF 1 MB Ethernet Communication Module
0xA070 0000 – 0xA07F FFFF 1 MB Memory controller
0xA080 0000 – 0xA08F FFFF 1 MB LCD controller
0xA090 0000 – 0xA09F FFFF 1 MB System Control Module
0xA0A0 0000 – 0xFFFF FFFF 1526 Reserved
Master Name hmaster[3:0] assignment
ARM926 I/D 0000
Ethernet Rx 0001
Ethernet Tx 0010
Reserved 0011
PCI 0100
BBus 0101
LCD 0110
Table 167: Hmaster encoding
Address range Size System functions
Table 166: System address map