SMSC USB2640, USB2640i 7.3.3.32F3h: Port Remap, BIT, Note:, NUMBER, BYTE NAME, DESCRIPTION, Table 7.6 Port Remap Register for Port

Ultra Fast USB 2.0 Multi-Format Flash Media Controller/USB Hub Combo

7.3.3.32F3h: Port Remap 3

BIT
NUMBER	BYTE NAME				DESCRIPTION
7:0	PRTR3	Port remap register for port 3.
		When a hub is enumerated by a USB Host Controller, the hub is only
		permitted to report how many ports it has; the hub is not permitted to select
		a numerical range or assignment. The Host Controller will number the
		downstream ports of the hub starting with the number '1', up to the number
		of ports that the hub reported having.
		The host's port number is referred to as "Logical Port Number" and the
		physical port on the hub is the “Physical Port Number". When remapping
		mode is enabled (see PRTMAP_EN in Register 08h: Configuration Data
		Byte 3) the hub's downstream port numbers can be remapped to different
		logical port numbers (assigned by the host).
		Note: OEM must ensure that Contiguous Logical Port Numbers are used,
		starting from number ‘1’ up to the maximum number of enabled
		ports; this ensures that the hub's ports are numbered in accordance
		with the way a host will communicate with the ports.
			Table 7.6 Port Remap Register for Port 3
		Bit [7:4]		‘0000’		Reserved
				‘0001’		Reserved
				‘0010’		Reserved
				‘0011’		Reserved
				‘0100’		Illegal; Do Not Use
				to
				‘1111’
		Bit [3:0]		‘0000’		Physical Port 3 is Disabled
				‘0001’		Physical Port 3 is mapped to Logical Port 1
				‘0010’		Physical Port 3 is mapped to Logical Port 2
				‘0011’		Physical Port 3 is mapped to Logical Port 3
				‘0100’		Illegal; Do Not Use
				to
				‘1111’

Revision 2.0 (10-03-08)	46	SMSC USB2640/USB2641
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