Datasheet

XIO2213B
www.ti.com SCPS210F –OCTOBER 2008–REVISED MAY 2013
The vendor dependent page provides access to the special control features of the XIO2213B, as well as
configuration and status information used in manufacturing test and debug. This page is selected by
writing 7 to the Page_Select field in base register 7. Table 10-7 shows the configuration of the vendor
dependent page, and Table 10-8 shows the corresponding field descriptions.
Table 10-7. Page 7 (Vendor Dependent) Register Configuration
BIT POSITION
ADDRESS 0 1 2 3 4 5 6 7
1000 Reserved
1001 Reserved for test
1010 Reserved for test
1011 Reserved for test
1100 Reserved for test
1101 Reserved for test
1110 SWR Reserved for test
1111 Reserved for test
Table 10-8. Page 7 (Vendor Dependent) Register Field Descriptions
FIELD SIZE TYPE Description
SWR 1 Rd/Wr Software hard reset. Writing a 1 to this bit forces a hard reset of the PHY section (same effect as momentarily
asserting the RESET terminal low). This bit is always read as a 0.
10.2 PHY Section Application Information
10.2.1 Power Class Programming
The PC0–PC2 terminals are programmed to set the default value of the power class indicated in the pwr
field (bits 21–23) of the transmitted self-ID packet. Descriptions of the various power classes are given in
Table 10-9. The default power-class value is loaded following a hardware reset, but is overridden by any
value subsequently loaded into the Pwr_Class field in register 4.
Table 10-9. Power Class Register Description
PC[0:2] DESCRIPTION
000 Node does not need power and does not repeat power.
001 Node is self powered and provides a minimum of 15 W to the bus.
010 Node is self powered and provides a minimum of 30 W to the bus.
011 Node is self powered and provides a minimum of 5 W to the bus.
100 Node may be powered from the bus and is using up to 3 W; no additional power is needed to enable the link. The node may
also provide power to the bus. The amount of bus power that it provides can be found in the configuration ROM.
101 Reserved for future standardization
110 Node is powered from the bus and uses up to 3 W. An additional 3 W is needed to enable the link.
111 Node is powered from the bus and uses up to 3 W. An additional 7 W is needed to enable the link.
Copyright © 2008–2013, Texas Instruments Incorporated Physical Layer (PHY) Section 187
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