Datasheet

TUSB7320, TUSB7340
SLLSE76E–MARCH 2011– REVISED JULY 2011 www.ti.com
5.13 Device Serial Number Register
This read-only register identifies the Device Serial Number for the TUSB73x0. The Device Serial Number
is in the format of an IEEE defined 64-bit extended unique identifier (EUI-64). The EUI-64 consists of TI’s
24-bit company ID (called an OUI-24) plus a 40 bit extension identifier. TI’s OUI-24 is 080028h and is
hardwired into bits 63:40 of the Device Serial Number Register. The TUSB73x0 has been assigned the
range of 00 0000 0000h to 00 0FFF FFFFh for the 40-bit extension identifier. As such, bits 39:32 of the
Device Serial Number Register are hardwired to 00h, and bits 31:0 of the Device Serial Number Register
are defined by a value unique for each device.
PCI Express Extended Register Offset: 154h
Register type:Read-Only
Default value: 0800 2800 XXXX XXXX h
Table 5-19. Device Serial Number Register
Bit
63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48
No.
Reset
0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0
State
Bit
47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
No.
Reset
0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0
State
Bit
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
No.
Reset
X X X X X X X X X X X X X X X X
State
Bit
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
No.
Reset
X X X X X X X X X X X X X X X X
State
Table 5-20. Bit Descriptions - Device Serial Number Register
(1)
Bit Field Name Access Description
Serial Number – Upper DW. The upper DW of the Serial Number is
63:32 SERIAL_NUM_UPPER r
hardwired to 0800 2800h.
Serial Number – Lower DW. The lower DW of the Serial Number is
31:0 SERIAL_NUM_LOWER r
unique for each device.
(1) Bits marked with † are reset by a PCI Express reset (PERST#), a GRST#, or the internally-generated power-on reset
74 PCI EXPRESS EXTENDED CONFIGURATION SPACE Copyright © 2011, Texas Instruments Incorporated
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Product Folder Link(s): TUSB7320 TUSB7340