DP83916VF National Semiconductor, DP83916VF Datasheet - Page 60

• Manufacturer Part Number: DP83916VF
• Description: IC CTRLR ORIENT NETWK IN 132PQFP
• Manufacturer: National Semiconductor
• Series: SONIC™r

Specifications of DP83916VF

• Controller Type: Network Interface Controller (NIC)
• Interface: Bus
• Mounting Type: Surface Mount
• Package / Case: 132-MQFP, 132-PQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Supply: -
• Voltage - Supply: -
• Operating Temperature: -
• Other names: *DP83916VF

5 0 Bus Interface
5 4 5 4 Memory Cycle for BMODE
Mode
On the rising edge of T1 the SONIC-16 asserts ADS and
ECS to indicate that the memory cycle is starting The ad-
dress (A23 –A1) bus status (S2–S0) and the direction
strobe (MWR) are driven and do not change for the remain-
der of the memory cycle On the falling edge of T1 the
SONIC-16 deasserts ECS ADS is deasserted on the rising
edge of T2
In Synchronous mode RDYi is sampled on the rising edge
at the end of T2 (the rising edge of the next T1 or Tx) T2
FIGURE 5-14 Memory Read BMODE
FIGURE 5-15 Memory Write BMODE
(Continued)
e
0 Synchronous
60
e
e
5-15 ) data is driven on the falling edge of T1 and stays
states will be repeated until RDYi is sampled properly in a
low state RDYi must meet the setup and hold times with
respect to the rising edge of bus clock for proper operation
During read cycles ( Figures 5-14 ) data (D15– D0) is latched
at the rising edge at the end of T2 For write cycles ( Figure
driven until the end of the cycle
0 Synchronous (1 Wait-State)
0 Synchronous (1 Wait-State)
TL F 11722 – 38
TL F 11722 – 40