Datasheet

High-Speed Inter-Chip (HSIC) USB 2.0 Hub and Flash Media Controller

Datasheet

SMSC USB4640/USB4640i 39 Revision 1.3 (03-13-13)

DATASHEET

4.4.4.9 E6h: Configuration Data Byte 3 (CFG_DAT_BYT3)

4.4.4.10 E7h: Non-Removable Device

BIT NAME DESCRIPTION

7:4 rsvd

3 PRTMAP_EN Port Mapping Enable: selects the method used by the hub to assign port

numbers and disable ports.

0 : Standard Mode. Strap options or the following registers are used to define

which ports are enabled, and the ports are mapped as port ‘n’ on the hub is

reported as port ‘n’ to the host, unless one of the ports is disabled, then the

higher numbered ports are remapped in order to report contiguous port

numbers to the host.

1 : Port Map mode. The mode enables remapping via the registers defined

below.

2:0 rsvd

BIT BYTE NAME DESCRIPTION

7:0 NR_DEVICE Indicates which port(s) include non-removable devices.

0 : Port is removable

1 : Port is non-removable

Informs the host if one of the active ports has a permanent device that is

undetachable from the hub. The device must provide its own descriptor data.

When using the internal default option,

NON_REM[1:0] designates the

appropriate ports as being non-removable.

Bit 7 : rsvd

Bit 6 : rsvd

Bit 5 : rsvd

Bit 4 : rsvd

Bit 3 : controls physical port 3

Bit 2 : controls physical port 2

Bit 1 : controls physical port 1

Bit 0 : rsvd

Note: Bit 1 must be set to a

1 by the firmware for proper identification of

the card reader as a non-removable device.