Datasheet
PCI Express*
Intel
®
Atom™ Processor E6xx Series Datasheet
115
8.2.1.5 RID — Revision Identification
This register contains the revision number of the device. These bits are read only and
writes to this register have no effect.
8.2.1.6 CC — Class Code
This register identifies the basic function of the device, a more specific sub-class, and a
register-specific programming interface.
Table 130. Offset 06h:
PSTS — Primary Status
Size: 16 bit Default: 0010h Power Well: Core
Access
PCI Configuration B:D:F 0:23-26:0
Offset Start:
Offset End:
6h
7h
Bit Range Default Access Acronym Description
15 0b RO RSVD Reserved
14 0b RWC SSE
Signaled System Error: This bit is set when this device sends an SERR
due to detecting an ERR_FATAL or ERR_NONFATAL condition and the
SERR Enable bit in the Command register is ‘1.’ Both received (if enabled
by BCTRL1[1]) and internally detected error messages do not effect this
field.
13 : 05
000000
000b
RO RSVD Reserved
04 1b RO CLIST Capabilities List: Indicates the presence of a capabilities list
03 0b RO IS
Interrupt Status: Indicates status of hot plug and power management
interrupts on the root port that result in INTx_B message generation.
This bit is set regardless of the state of CMD.ID.
02 : 00 000b RO RSVD Reserved
Table 131. Offset 08h: RID — Revision Identification
Size: 8 bit Default: Refer to bit description Power Well: Core
Access
PCI Configuration B:D:F 0:23-26:0
Offset Start:
Offset End:
8h
8h
Bit Range Default Access Acronym Description
07 : 00
Refer to
bit
descript
ion
RO RID1
Revision Identification Number: This is an 8-bit value that indicates
the revision identification number for the device. For the B-0 Stepping,
this value is 01h. For B-1 Stepping, this value is 02h.
Table 132. Offset 09h: CC — Class Code
Size: 24 bit Default: 060400h Power Well: Core
Access
PCI Configuration B:D:F 0:23-26:0
Offset Start:
Offset End:
9h
Bh
Bit Range Default Access Acronym Description
23 : 16 06h RO BCC
Base Class Code: This indicates the base class code for this device. This
code has the value 06h, indicating a Bridge device.
15 : 08 04h RO SUBCC
Sub-Class Code: This indicates the sub-class code for this device. The
code is 04h indicating a PCI-to-PCI bridge.
07 : 00 00h RO PI
Programming Interface: This indicates the programming interface of
this device. This value does not specify a particular register set layout
and provides no practical use for this device.