USB97C100QFP datasheet(48/64 Pages) SMSC

48 / 64 page

SMSC DS – USB97C100

Page 48

Rev. 01/03/2001

Table 80 - Alternate Address 1 Register

ALT_ADDR1

(0x7F99 - RESET=0x00)

ALTERNATE SIE ADDRESS 1

BIT

NAME

R/W

DESCRIPTION

EN_ALTADDR1

R/W

Alternate address.

1 = Enabled, this bit allows Endpoints 15 through 0 to be

available as Endpoint ALT0 through Endpoint ALT15. In other

words, the SIE can respond to two addresses with up to 32

endpoints distributed between them.

0 = Disabled, this register does not affect EP_OK generation.

ALT6

R/W

Alternate address bit 6

ALT5

R/W

Alternate address bit 5

ALT4

R/W

Alternate address bit 4

ALT3

R/W

Alternate address bit 3

ALT2

R/W

Alternate address bit 2

ALT1

R/W

Alternate address bit 1

ALT0

R/W

Alternate address bit 0

Notes:

Endpoint numbers used for ALT_ADDRx are the compliment of the actual Endpoint number received. For

example, any packets sent to Endpoint “0” of the ALT_ADDRx will appear as Endpoint 15.

The Firmware (8051) must make sure that endpoint configurations do not overlap.

Table 81- Alternate Address 2 Register

ALT_ADDR2

(0x7F9E – RESET=0x00)

ALTERNATE SIE ADDRESS 2

BIT

NAME

R/W

DESCRIPTION

EN_ALTADDR2

R/W

Alternate address 2.

1 = Enabled, this bit allows Endpoints 8 through 11 to be

available to this address.

0 = Disabled, this register does not affect EP_OK

generation.

ALT6

R/W

Alternate address bit 6

ALT5

R/W

Alternate address bit 5

ALT4

R/W

Alternate address bit 4

ALT3

R/W

Alternate address bit 3

ALT2

R/W

Alternate address bit 2

ALT1

R/W

Alternate address bit 1

ALT0

R/W

Alternate address bit 0

Table 82 - Alternate Address 3 Register

ALT_ADDR3

(0x7F9F – RESET=0x00)

ALTERNATE SIE ADDRESS 3

BIT

NAME

R/W

DESCRIPTION

EN_ALTADDR 3

R/W

Alternate address 3.

1 = Enabled, this bit allows Endpoints 12through 15 to be

available to this address.

0 = Disabled, this register does not affect EP_OK

generation.

ALT6

R/W

Alternate address bit 6

ALT5

R/W

Alternate address bit 5

ALT4

R/W

Alternate address bit 4

ALT3

R/W

Alternate address bit 3

ALT2

R/W

Alternate address bit 2

ALT1

R/W

Alternate address bit 1

ALT0

R/W

Alternate address bit 0

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