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Using the Module
73
CMx-BTx
4.8
I/O Address Map
There are 64 KB + 3 bytes of IO space (0h-10002h) for accessing IO registers. Most IO registers
exist for legacy functions in the PCU or for PCI devices, while some are claimed by the SoC
Transaction Router for graphics and for the PCI configuration space access registers.
Table 4-6: Fixed IO Ranges in the CPU
The following table shows the variable IO decode ranges. They are set using base address reg-
isters (BARs) or other similar means. Plug-and-play (PnP) software (PCI/ACPI) can use their
configuration mechanisms to set and adjust these values.
Table 4-7: Variable IO Address Ranges Decoded by PCI Devices in the IO Fabric
Device
IO Address
Comment
8259 Master
20h-21h, 24h-25h,
28h-29h, 2Ch-2Dh,
30h-31h, 34h-35h,
38h-39-, 3Ch-3Dh
8254s
40h-43h, 50h-53h
PS Control
60h, 64h
NMI Controller
61h, 63h, 65h, 67h
RTC
70h-77h
Port 80h
80h-83h
Init Register
92h
8259 Slave
A0h-A1h, A4h-A5h,
A8h-A9h, ACh-ADh,
B0h-B1h, B4h-B5h,
B8h-B9h, BCh-BDh,
4D0h-4D1h
PCU UART
3F8h-3FFh
used by the LPC-UART
Reset Control
CF9h
Overlaps PCI IO registers
Active Power Management
B2h-B3h
Device
Size / Bytes
Comment
ACPI Power Management
(PCU)
128
ACPI_BASE_ADDR (PM1BLK):
PCI[B:0,D:31,F:0] + 40h
GPIO (PCU)
256
GBA: PCI[B:0,D:31,F:0] + 48h
RCBA (PCU)
1024
RCRB_BA: PCI[B:0,D:31,F:0] +
F0h
Caution:
Variable IO ranges should not be set to conflict with other IO ranges.
There will be unpredictable results if the configuration software allows conflicts to
occur. Hardware does not check for conflicts.
Содержание CM1-BT1
Страница 5: ...iv...
Страница 9: ...viii...
Страница 15: ...6 Introduction...
Страница 23: ...14 Getting Started BLANK PAGE...
Страница 53: ...44 Using the Module 4 4 2 Main System Management 4 4 3 Main System Management Board Information...
Страница 55: ...46 Using the Module 4 4 6 Main System Management Runtime Statistics 4 4 7 Main System Management Flags...
Страница 56: ...Using the Module 47 CMx BTx 4 4 8 Main System Management Power Up 4 4 9 Main System Management LVDS Backlight...
Страница 57: ...48 Using the Module 4 4 10 Main System Management Smart Fan 4 4 11 Advanced...
Страница 62: ...Using the Module 53 CMx BTx 4 4 20 Advanced SATA Configuration 4 4 21 Advanced USB Configuration...
Страница 63: ...54 Using the Module 4 4 22 Advanced USB Configuration USB Configuration 4 4 23 Advanced SDIO Configuration...
Страница 64: ...Using the Module 55 CMx BTx 4 4 24 Advanced Network Configuration 4 4 25 Advanced Audio Configuration...
Страница 68: ...Using the Module 59 CMx BTx 4 4 32 Advanced ACPI Settings 4 4 33 Advanced Serial Port Console Redirection...
Страница 70: ...Using the Module 61 CMx BTx 4 4 36 Advanced Security Configuration 4 4 37 Advanced Miscellaneous...
Страница 74: ...Using the Module 65 CMx BTx 4 4 44 Advanced Mini PCIe slot function 4 4 45 Advanced USB Controls...
Страница 76: ...Using the Module 67 CMx BTx 4 4 48 Security 4 4 49 Boot...
Страница 77: ...68 Using the Module 4 4 50 Boot CSM Configuration 4 4 51 Boot Delete Boot Option...