AM79C975VCW datasheet(298/304 Pages) AMD

298 / 304 page

298

Am79C973/Am79C975

P R E L I M INARY

CSR88

Chip ID Register Lower . . . . . . . . . . . .152

CSR89

Chip ID Register Upper . . . . . . . . . . . .153

CSR9

Logical Address Filter 1 . . . . . . . . . . .136

CSR92

Ring Length Conversion . . . . . . . . . . .153

Cycle Frame . . . . . . . . . . . . . . . . . . . . . . . . .29

DC CHARACTERISTICS OVER

COMMERCIAL OPERATING

RANGES . . . . . . . . . . . . . . . . . . . .225, 266

Decoder . . . . . . . . . . . . . . . . . . . . . . . . . . . .83

Descriptor DMA Transfers . . . . . . . . . . . . .58

Descriptor Ring Read In Burst Mode . . . . .59

Descriptor Ring Write In Burst Mode . . . . .61

Descriptor Ring Write In

Non-Burst Mode . . . . . . . . . . . . . . . . . . . .61

Descriptor Rings . . . . . . . . . . . . . . . . . . . . .64

Destination Address Handling . . . . . . . . . . .71

DETAILED FUNCTIONS . . . . . . . . . . . . .40

Device . . . . . . . . . . . . . . . . . . . . . . . . . . . .258

Device ID Register . . . . . . . . . . . . . . . . . . .107

Device Select . . . . . . . . . . . . . . . . . . . . . . . .29

DEVSEL . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Digital Ground (8 Pins) . . . . . . . . . . . . . . . .38

Digital I/O (Non-PCI Pins) . . . . . . . . . . . .225

Digital Power (6 Pins) . . . . . . . . . . . . . . . . .38

Direct Access to the Interface . . . . . . . . . . .98

Direct Flash Access . . . . . . . . . . . . . . . . . . .93

Direct SRAM Access . . . . . . . . . . . . . . . . . .96

Disconnect Of Burst Transfer . . . . . . . . . . .44

Disconnect Of Slave Burst Transfer

- Host Inserts Wait States . . . . . . . . . . . . .45

Disconnect Of Slave Burst Transfer

- No Host Wait States . . . . . . . . . . . . . . . .44

Disconnect Of Slave Cycle When Busy . . .44

Disconnect When Busy . . . . . . . . . . . . . . . .44

Disconnect With Data Transfer . . . . . . .50, 51

Disconnect Without Data Transfer . . . .51, 52

DISTINCTIVE CHARACTERISTICS . . . . .1

Double Word I/O Mode . . . . . . . . . . . . . . .110

DVDDA Analog PLL Power . . . . . . . . . . . .38

DVDDCO Crystal . . . . . . . . . . . . . . . . . . . .38

DVDDD, DVDDP PDX Block Power . . . .38

DVDDRX, DVDDTX I/O Buffer Power . . .38

DVSSD, DVSSP PDX Ground . . . . . . . . . .38

DVSSX All Blocks . . . . . . . . . . . . . . . . . . .38

EADI Operations . . . . . . . . . . . . . . . . .89, 273

EAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

EBCLK . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

EBCLK Waveform . . . . . . . . . . . . . . . . . .240

EBCS Values . . . . . . . . . . . . . . . . . . . . . . .182

EBWE . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

EECS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

EEDI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

EEDO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

EEPROM Auto-Detection . . . . . . . . . . . . . .98

EEPROM Chip Select . . . . . . . . . . . . . . . . .33

EEPROM Data In . . . . . . . . . . . . . . . . . . . .33

EEPROM Data Out . . . . . . . . . . . . . . . . . . .33

EEPROM Interface . . . . . . . . . . . . .33, 97, 98

EEPROM MAP . . . . . . . . . . . . . . . . . . . . . .99

EEPROM Read Functional Timing . . . . . .237

EEPROM Serial clock . . . . . . . . . . . . . . . . .33

EEPROM Timing . . . . . . . . . . . . . . . . . . .228

EEPROM-Programmable Registers . . . . . .98

EESK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

EPROM Only Configuration for the

Expansion Bus (64K EPROM) . . . . . . . . .93

EPROM Only Configuration for the

Expansion Bus (64K EPROM) . . . . . . . . .92

EROMCS . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Error Detection . . . . . . . . . . . . . . . . . . . . . .71

escriptor Ring Read In Non-Burst Mode . . .59

Expansion Bus Clock . . . . . . . . . . . . . . . . . .34

Expansion Bus Interface . . . . . . . . . . . .33, 90

Expansion Bus Read Timing . . . . . . . . . . .240

Expansion Bus Write Enable . . . . . . . . . . . .34

Expansion Bus Write Timing . . . . . . . . . .241

Expansion ROM - Boot Device Access . . . .90

Expansion ROM Bus Read Sequence . . . . .94

Expansion ROM Read . . . . . . . . . . . . . . . . .43

Expansion ROM Transfers . . . . . . . . . . . . .43

External Address Detection

Interface . . . . . . . . . . . . . . . . . . .36, 88, 272

External PHY . . . . . . . . . . . . . . . . .89, 273

External PHY - MII @ 2.5 MHz . . . . .229

External PHY - MII @ 25 MHz . . . . .229

MII Snoop Mode and External

PHY Mode . . . . . . . . . . . . . . . . . . . .89

Receive Frame Tagging . . . . . . . . .89, 273

AM79C975VCW Datenblatt(PDF) 298 Page - Advanced Micro Devices

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