Datasheet

XIO2001
www.ti.com SCPS212G –MAY 2009–REVISED DECEMBER 2012
2.3 Documents Conventions
Throughout this data manual, several conventions are used to convey information. These conventions are
listed below:
1. To identify a binary number or field, a lower case b follows the numbers. For example: 000b is a 3-bit
binary field.
2. To identify a hexadecimal number or field, a lower case h follows the numbers. For example: 8AFh is a
12-bit hexadecimal field.
3. All other numbers that appear in this document that do not have either a b or h following the number
are assumed to be decimal format.
4. If the signal or terminal name has a bar above the name (for example, GRST), then this indicates the
logical NOT function. When asserted, this signal is a logic low, 0, or 0b.
5. Differential signal names end with P, N, +, or – designators. The P or + designators signify the positive
signal associated with the differential pair. The N or – designators signify the negative signal
associated with the differential pair.
6. RSVD indicates that the referenced item is reserved.
7. In Sections 4 through 6, the configuration space for the bridge is defined. For each register bit, the
software access method is identified in an access column. The legend for this access column includes
the following entries:
– r – read access by software
– u – updates by the bridge internal hardware
– w – write access by software
– c – clear an asserted bit with a write-back of 1b by software. Write of zero to the field has no effect
– s – the field may be set by a write of one. Write of zero to the field has no effect
– na – not accessible or not applicable
2.4 Document History
REVISION REVISION
REVISION COMMENTS
DATE NUMBER
5/2009 – Initial release
5/2009 A Corrected typos
9/2009 B
Added PNP package and ESD ratings
10/2009 C
Removed terminal assignment tables for all packages
1/2010 D Corrected PNP pinout, replaced Ordering Information with Package Option Addendum
Corrected Vi PCI Express REFCLK(differential) parameters
11/2011 E Corrected VRX-DIFFp-p parameters
Removed label N13 on the signal VDD_15 for the ZAJ package
5/2012 F Added missing PNP Pin #s to the Table 2-1 and to the Table 2-2
2.5 Terminal Assignments
The XIO2001 is available in either a 169-ball ZGU MicroStar BGA or a 144−ball ZAJ MicroStar BGA
package.
Figure 2-1 shows a terminal diagram of the ZGU package.
Figure 2-2 shows a terminal diagram of the ZAJ package.
Figure 2-3 shows a terminal diagram of the PNP package.
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