DP83815CVNG National Semiconductor, DP83815CVNG Datasheet - Page 14

• 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

Subject to change without notice.
3.0 Functional Description
3.1 MAC/BIU
The MAC/BIU is a derivative design from the DP83810
(Euphrates). The original MAC/BIU design has been
optimized to improve logic efficiency and enhanced to add
features consistent with current market needs and
specification compliance. The MAC/BIU design blocks are
discussed in this section.
3.1.1 PCI Bus Interface
This block implements PCI v2.2 bus protocols, and
configuration space. Supports bus master reads and writes
to CPU memory, and CPU access to on-chip register
space. Additional functions provided include: configuration
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PCI Bus
Interface
EEPROM
93C46
Serial
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Figure 3-2
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(Continued)
Boot ROM/
MAC/BIU
Flash
Pkt Recog
Rx Filter
Rx Buffer Manager
Tx Buffer Manager
SRAM
MIB
Logic
Data FIFO
Data FIFO
Functional Block Diagram
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control, serial EEPROM access with auto configuration
load, interrupt control, power management control with
support for PME or CLKRUN function.
3.1.1.1 Byte Ordering
The DP83815 can be configured to order the bytes of data
on the AD[31:0] bus to conform to little endian or big
endian ordering through the use of the Configuration
Register, bit 0 (CFG:BEM). By default, the device is in little
endian ordering. Byte ordering only affects data FIFOs.
Register information remains bit aligned (i.e. AD[31] maps
to bit 31 in any register space, AD[0] maps to bit 0, etc.).
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MAC/BIU
Rx MAC
Tx MAC
Rev O
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