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service:wince:driversxscale:eim

EIM-Bus (Trizeps VII)

This describes the registry-settings which can be made for the address-/databus of the i.MX6 Trizeps VII -module.

Registry Keys

[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\OEM]
Key Type Description
DataPins DWORD Set which datapins to use. 0xFFFF for all 16 pins. Bit 0x1 = D0, Bit 0x2 = D1, Bit 0x4 = D2, …
DataPad DWORD Set IOMUXC_SW_PAD_CTL_PAD_xxx-registers of all used datapins to this value. This controls the physical pad-setting.
AddressPins DWORD Set which addresspins to use. 0x3ffffff for all address-pins. Bit 0x1 = A0, Bit 0x2 = A1, Bit 0x4 = A2, …
AddressPad DWORD Set IOMUXC_SW_PAD_CTL_PAD_xxx-registers of all used address-pins to this value. This controls the physical pad-settings.
BusCtrlPins DWORD
Each bit corresponds to a address/databus-controlpin.
0x001	nWE
0x002	nOE
0x004	nCS0	(nCS3 on SODIMM)
0x008	nCS1	(nCS1,nCS4 on SODIMM)
0x010	nBE0
0x020	nBE1
0x040	nBE2
0x080	nBE3	
0x100	nWAIT/nRDY
BusCtrlPad DWORD Set IOMUXC_SW_PAD_CTL_PAD_xxx-registers of all used control-pins to this value. This controls the physical pad-settings.
CS0GCR1 DWORD Set Chip Select 0 General Configuration Register 1 (EIM_CS0GCR1)
CS0GCR2 DWORD Set Chip Select 0 General Configuration Register 2 (EIM_CS0GCR2)
CS0RD1 DWORD Set Chip Select 0 Read Configuration Register 1 (EIM_CS0RCR1)
CS0RD2 DWORD Set Chip Select 0 Read Configuration Register 2 (EIM_CS0RCR2)
CS0WR1 DWORD Set Chip Select 0 Write Configuration Register 1 (EIM_CS0WCR1)
CS0WR2 DWORD Set Chip Select 0 Write Configuration Register 1 (EIM_CS0WCR2)

See Chapter 22: External Interface Module (EIM) of the i.MX6 Reference Manual for details.

The i.MX6 Chip Select 0 is connected to nCS3 (SODIMM-Pin 107).
The i.MX6 Chip Select 1 is connected to a decoder which generates nCS1 (SODIMM-Pin 105) and nCS4 (SODIMM-Pin 106) depending on the level of A25. If A25 = 0, than nCS1 is selected, otherwise nCS4.

D[15..0] are connected to EIM_D[31..16].

Please note that you have several configuration option which may lead to address shifts or might not enable you to use nCS4. In the standard-configuration A0 is typically not used, because the bus is configured to use 16bit access.

Download Sample Register for AddressPad Setting: imx6sdlrm-adresspad.pdf

See Also

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service/wince/driversxscale/eim.txt · Zuletzt geändert: 2014/11/17 13:11 von