AMD Geode LX 800@0.9W - Manual (Page 82)

82 AMD Geode™ LX Processors Data Book
GLIU Register Descriptions 33234H
4.2.4.3 P2D Range Descriptor (P2D_R)
See Table 4.1.3.1 "Memory Routing and Translation" on page 47 for details on the descriptor usage.
GLIU0 P2D_R[0]
MSR Address 10000028h
Type R/W
Reset Value 00000000_000FFFFFh
GLIU1 P2D_R[3:0]
MSR Address 4000002Ah-4000002Dh
Type R/W
Reset Value 00000000_000FFFFFh
P2D_R Register Map
63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
PDID1
PCMP_BIZ
RSVD PMAX
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PMAX PMIN
P2D_R Bit Descriptions
Bit Name Description
63:61 PDID1 Descriptor Destination ID. These bits define which Port to route the request to, if it is a
‘hit’ based on the other settings in this register.
000: Port 0 (GLIU0 = GLIU; GLIU1 = GLIU.)
001: Port 1 (GLIU0 = GLMC; GLIU1 = Interface to GLIU0.)
010: Port 2 (GLIU0 = Interface to GLIU1; GLIU1 = VP.)
011: Port 3 (GLIU0 = CPU Core; GLIU1 = GLCP.)
100: Port 4 (GLIU0 = DC; GLIU1 = GLPCI.)
101: Port 5 (GLIU0 = GP; GLIU1 = VIP.)
110: Port 6 (GLIU0 = Not Used; GLIU1 = SB.)
111: Port 7 (GLIU0 = Not Used; GLIU1 = Not Used.)
60 PCMP_BIZ Compare Bizzaro Flag.
0: Consider only transactions whose Bizzaro flag is low as a potentially valid address hit.
A low Bizzaro flag indicates a normal transaction cycle such as a memory or I/O.
1: Consider only transactions whose Bizzaro flag is high as a potentially valid address
hit. A high Bizzaro flag indicates a ‘special’ transaction, such as a PCI Shutdown or
Halt cycle.
59:40 RSVD Reserved.
39:20 PMAX Physical Memory Address Max. These bits form the value denoting the upper (ending)
address of the physical memory, which is compared to determine a hit.
19:0 PMIN Physical Memory Address Min. These bits form the value denoting the lower (starting)
address of the physical memory, which is compared to determine a hit. Hence, a hit
occurs if the physical address [31:12] >= PMIN and <= PMAX.