DP83902AV/NOPB National Semiconductor, DP83902AV/NOPB Datasheet - Page 45

• Manufacturer Part Number: DP83902AV/NOPB
• Description: IC CTRLR SER NETWORK IN 84PLCC
• Manufacturer: National Semiconductor

Specifications of DP83902AV/NOPB

• Controller Type: Serial Network Interface Controller
• Interface: Serial
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 140mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 84-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *DP83902AV; *DP83902AV/NOPB; DP83902AV

13 0 Bus Arbitration and Timing
The FIFO at the Beginning of Transmit
Before transmitting the ST-NIC performs a prefetch from
memory to load the FIFO The number of bytes prefetched
Maximum Bus Latency for Byte Mode
TL F 11157– 60
Transmit Prefetch Timing
(Continued)
45
is the programmed FIFO threshold The next BREQ is not
issued until after the ST-NIC actually begins transmitting
data i e after SFD The Transmit Prefetch diagram illus-
trates this process
Maximum Bus Latency for Word Mode
TL F 11157 – 59
TL F 11157 – 61