DP83905AVQB National Semiconductor, DP83905AVQB Datasheet - Page 57

• Manufacturer Part Number: DP83905AVQB
• Description: IC CONTROLR AT/LAN TP IN 160PQFP
• Manufacturer: National Semiconductor
• Series: AT/LANTIC™r

Specifications of DP83905AVQB

• Controller Type: AT, LAN Twisted-Pair Interface Controller
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 100mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 160-BFQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Interface: -
• Other names: *DP83905AVQB

6 0 Operation of AT LANTIC Controller
This is the type of cycle used to read from a register or in 8-bit I O mode from a data transfer port These accesses are entirely
asynchronous with the AT LANTIC Controller responding when it decodes the correct address on SA0– 9 and an IORD If AEN
is high the cycle will be ignored CHRDY is deasserted if the AT LANTIC Controller is not ready to respond and asserted when
ready If it is ready immediately CHRDY is not deasserted The data will always appear on SD0– 7
This is the type of cycle used to write to a register or in 8-bit I O mode to a data transfer port These accesses are entirely
asynchronous with the AT LANTIC Controller responding when it decodes the correct address on SA0– 9 and an IOWR If AEN
is high the cycle will be ignored CHRDY is deasserted if the AT LANTIC Controller is not ready to respond and asserted when
ready If it is ready immediately CHRDY is not deasserted The data will always be taken from SD0– 7
8-Bit I O Mode Slave Read
8-Bit I O Mode Slave Write
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