DP83815CVNG National Semiconductor, DP83815CVNG Datasheet - Page 33

• Manufacturer Part Number: DP83815CVNG
• Description: IC CONTROLLER MEDIA ACCESS
• Manufacturer: National Semiconductor

Specifications of DP83815CVNG

• Controller Type: Ethernet Controller, MAC/BIU
• Interface: PCI
• Voltage - Supply: 3.3V
• Current - Supply: 170mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *DP83815CVNG

4.0 Register Set
4.1.2 Configuration Command and Status Register
The CFGCS register has two parts. The upper 16-bits (31-16) are devoted to device status. A status bit is reset whenever
the register is written, and the corresponding bit location is a 1. The lower 16-bits (15-0) are devoted to command and are
used to configure and control the device.
26-25
22-21
19-16
15-10
Bit
31
30
29
28
27
24
23
20
9
8
7
Bit Name
SERREN
DPERR
RMABT
NCPEN
SSERR
FBBEN
RTABT
STABT
DSTIM
DPD
FBB
Offset: 04h
(Continued)
Tag: CFGCS
Detected Parity Error
Refer to the description in the PCI V2.2 specification.
Signaled SERR
Refer to the description in the PCI V2.2 specification.
Received Master Abort
Refer to the description in the PCI V2.2 specification.
Received Target Abort
Refer to the description in the PCI V2.2 specification.
Sent Target Abort
Refer to the description in the PCI V2.2 specification.
DEVSELN Timing
This field will always be set to 01 indicating that DP83815 supports “medium” DEVSELN timing.
Data Parity Detected
Refer to the description in the PCI V2.2 specification.
Fast Back-to-Back Capable
DP83815 will set this bit to 1.
unused
(reads return 0)
New Capabilities Enable
When set, this bit indicates that the Capabilities Pointer contains a valid value and new capabilities such
as power management are supported. When clear, new capabilities (CAPPTR, PMCAP, PMCS) are
disabled. The value in this register will either be loaded from the EEPROM or, if the EEPROM is
disabled, from a strap option at reset.
Unused
(reads return 0)
Unused
(reads return 0)
Fast Back-to-Back Enable
Set to 1 by the PCI BIOS to enable the DP83815 to do Fast Back-to-Back transfers (FBB transfers as a
master is not implemented in the current revision).
SERRN Enable
When SERREN and PERRSP are set, DP83815 will generate SERRN during target cycles when an
address parity error is detected from the system. Also, when SERREN and PERRSP are set and
CFG:PESEL is reset, master cycles detecting data parity errors will generate SERRN.
Unused
(reads return 0)
Access: Read Write
Size: 32 bits
33
Description
Hard Reset: 02900000h
Soft Reset: Unchanged
www.national.com