Register and Memory Mapping
352 Datasheet
Table 9-2. Fixed I/O Ranges Decoded by Intel
®
PCH (Sheet 1 of 2)
I/O
Address
Read Target Write Target Internal Unit
00h–08h DMA Controller DMA Controller DMA
09h–0Eh RESERVED DMA Controller DMA
0Fh DMA Controller DMA Controller DMA
10h–18h DMA Controller DMA Controller DMA
19h–1Eh RESERVED DMA Controller DMA
1Fh DMA Controller DMA Controller DMA
20h–21h Interrupt Controller Interrupt Controller Interrupt
24h–25h Interrupt Controller Interrupt Controller Interrupt
28h–29h Interrupt Controller Interrupt Controller Interrupt
2Ch–2Dh Interrupt Controller Interrupt Controller Interrupt
2E–2F LPC SIO LPC SIO Forwarded to LPC
30h–31h Interrupt Controller Interrupt Controller Interrupt
34h–35h Interrupt Controller Interrupt Controller Interrupt
38h–39h Interrupt Controller Interrupt Controller Interrupt
3Ch–3Dh Interrupt Controller Interrupt Controller Interrupt
40h–42h Timer/Counter Timer/Counter PIT (8254)
43h RESERVED Timer/Counter PIT
4E–4F LPC SIO LPC SIO Forwarded to LPC
50h–52h Timer/Counter Timer/Counter PIT
53h RESERVED Timer/Counter PIT
60h Microcontroller Microcontroller Forwarded to LPC
61h NMI Controller NMI Controller Processor I/F
62h Microcontroller Microcontroller Forwarded to LPC
64h Microcontroller Microcontroller Forwarded to LPC
66h Microcontroller Microcontroller Forwarded to LPC
70h RESERVED NMI and RTC Controller RTC
71h RTC Controller RTC Controller RTC
72h RTC Controller NMI and RTC Controller RTC
73h RTC Controller RTC Controller RTC
74h RTC Controller NMI and RTC Controller RTC
75h RTC Controller RTC Controller RTC
76h RTC Controller NMI and RTC Controller RTC
77h RTC Controller RTC Controller RTC
80h
DMA Controller, or LPC, or
PCI
DMA Controller and LPC or PCI DMA
81h–83h DMA Controller DMA Controller DMA
84h–86h DMA Controller DMA Controller and LPC or PCI DMA
87h DMA Controller DMA Controller DMA
88h DMA Controller DMA Controller and LPC or PCI DMA
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