Texas Instruments PCI7411, PCI7611, PCI7621, PCI7421 manual 9. General Control Register Description

Table 4−9. General Control Register Description

BIT	SIGNAL	TYPE			FUNCTION
			Flash media power control pin polarity. This bit controls the polarity of the MC_PWR_CTRL_0 and
15 ‡	FM_PWR_CTRL	RW	MC_PWR_CTRL_1 terminals.
	_POL		0	= MC_PWR_CTRL_x terminals are active low (default)
			1	= MC_PWR_CTRL_x terminals are active high
			Smart Card interface select. This bit controls the selection of the dedicated Smart Card interface
			used by the controller.
			0	= EMV interface selected (default)
14 ‡	SC_IF_SEL	RWU	1	= PCI7x10-style interface selected
			Note: The PCI7x10-style interface is only allowed when bits 9−8 (FM_IF_SEL field) are 01. If bits
			9−8 contain any other value, then this bit is 0. Care must be taken in the design to ensure that this
			bit can be set to 1 at the same time that bits 9−8 are set to 01.
			When this bit is set, it reduces the query time for UltraMedia card types.
13 ‡	SIM_MODE	RW	0	= Query time is unaffected (default)
			1	= Query time is reduced for simulation purposes
			When this bit is set, bit 0 in the I/O limit registers (PCI offsets 30h and 38h) for both CardBus functions
12 ‡	IO_LIMIT_SEL	RW	is set.
			0	= Bit 0 in the I/O limit registers is 0 (default)
			1	= Bit 0 in the I/O limit registers is 1
			When this bit is set, bit 0 in the I/O base registers (PCI offsets 2Ch and 34h) for both CardBus functions
11 ‡	IO_BASE_SEL	RW	is set.
			0	= Bit 0 in the I/O base registers is 0 (default)
			1	= Bit 0 in the I/O base registers is 1
			Power switch select. This bit selects which power switch is implemented in the system.
10 ‡	12V_SW_SEL	RW	0	= A 1.8-V capable power switch (TPS2228) is used (default)
			1	= A 12-V capable power switch (TPS2226) is used
			Dedicated flash media interface selection. This field controls the mode of the dedicated flash media
			interface.
9−8 ‡	FM_IF_SEL	RW	00 = Flash media interface configured as SD/MMC socket + MS socket (default)
			01 = Flash media interface configured as 2-in-1 (SD/MMC, MS) socket
			10 = Flash media interface configured as 3-in-1 (SD/MMC, MS, SM/XD) socket
			11 = Reserved
7 ‡	DISABLE_SC	RW	When this bit is set, the Smart Card function is completely nonaccessible and nonfunctional.
6 ‡	DISABLE_SD	RW	When this bit is set, the SD host controller function is completely nonaccessible and nonfunctional.
5 ‡	DISABLE_FM	RW	When this bit is set, the flash media function is completely nonaccessible and nonfunctional.
4 ‡	DISABLE_SKTB	RW	When this bit is set, CardBus socket B (function 1) is completely nonaccessible and nonfunctional.
3 ‡	DISABLE_OHCI	RW	When this bit is set, the OHCI 1394 controller function is completely nonaccessible and nonfunctional.
			Dedicated Smart Card power control. This bit determines how power to the dedicated Smart Card
	DED_SC_PWR_		socket is controlled.
2 ‡		RW	0	= Controlled through the SC_PWR_CTRL terminal (default)
	CTRL
			1	= Controlled through the VPP voltage of socket B of the CardBus power switch (the design
			must ensure that this mode can only be set when CardBus socket B is disabled).
			Controls top level PCI arbitration:
			00 = 1394 OHCI priority		10 = Flash media/SD host priority
1−0 ‡	ARB_CTRL	RW	01 = CardBus priority		11 = Fair round robin
			Note: When flash media/SD host priority is selected, there must be a two-level priority scheme with the
			first level being a round robin between the flash media and SD host functions and the second level being
			a round robin between the CardBus and 1394 functions.

‡These bits are cleared only by the assertion of GRST.

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