SMSC USB2504, USB2504A Register 09h: Non-RemovableDevice (Reset = 0x00), 5.3.9.13Register 0Ch: Max Power For Self Powered Operation (Reset = 0x00)

Integrated USB 2.0 Compatible 4-Port Hub

Datasheet
5.3.9.10	Register 09h: Non-Removable Device (Reset = 0x00)
BIT
NUMBER	BIT NAME	DESCRIPTION
7:0	NR_DEVICE	Non-Removable Device: Indicates which port(s) include non-removable devic-
		es. ‘0’ = port is removable, ‘1’ = port is non-removable.
		Bit 7= Reserved
		Bit 6= Reserved
		Bit 5= Reserved
		Bit 4= 1; Port 4 non-removable.
		Bit 3= 1; Port 3 non-removable.
		Bit 2= 1; Port 2 non-removable.
		Bit 1= 1; Port 1 non removable.
		Bit 0 is Reserved, always = ‘0’.

5.3.9.11Register 0Ah: Port Disable For Self Powered Operation (Reset = 0x00)

BIT
NUMBER	BIT NAME		DESCRIPTION
7:0	PORT_DIS_SP	Port Disable Self-Powered: Disables 1 or more contiguous ports. ‘0’ = port
		is available, ‘1’ = port is disabled.
		Bit 7= Reserved
		Bit 6= Reserved
		Bit 5= Reserved
		Bit 4= 1; Port 4	is disabled.
		Bit 3= 1; Port 3	is disabled.
		Bit 2= 1; Port 2	is disabled.
		Bit 1= 1; Port 1	is disabled.
		Bit 0 is Reserved, always = ‘0’

5.3.9.12Register 0Bh: Port Disable For Bus Powered Operation (Reset = 0x00)

BIT
NUMBER	BIT NAME		DESCRIPTION
7:0	PORT_DIS_BP	Port Disable Bus-Powered: Disables 1 or more contiguous ports. ‘0’ = port
		is available, ‘1’ = port is disabled.
		Bit 7= Reserved
		Bit 6= Reserved
		Bit 5= Reserved
		Bit 4= 1; Port 4	is disabled.
		Bit 3= 1; Port 3	is disabled.
		Bit 2= 1; Port 2	is disabled.
		Bit 1= 1; Port 1	is disabled.
		Bit 0 is Reserved, always = ‘0’

5.3.9.13Register 0Ch: Max Power For Self Powered Operation (Reset = 0x00)

BIT
NUMBER	BIT NAME	DESCRIPTION

SMSC USB2504/USB2504A	31	Revision 2.3 (08-27-07)
	DATASHEET