DP83916VF National Semiconductor, DP83916VF Datasheet - Page 84

• 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

7 0 AC and DC Specifications
BUS RETRY
Note 1 Depending upon the mode the SONIC-16 will assert and deassert HOLD from the rising or falling edge of BSCK
Note 2 Unless Latched Bus Retry mode is set (LBR in the Data Configuration Register Section 4 3 2) BRT must remain asserted until after the Th state If
Latched Bus Retry mode is used BRT does not need to satisfy T42
Note 3 T41 is for synchronous bus retry and T41a is for asynchronous bus retry (see Section 4 3 2 bit 15 Extended Bus Mode) Since T41a is an asynchronous
setup time it is not necessary to meet it but doing so will guarantee that the bus exception occurs in the current memory transfer not the next
Note 4 BGACK is driven high for approximately
Number
T41
T41a
T42
T43
T44
T47
T50
Bus Retry Synchronous Setup Time to BSCK
(Note 3)
Bus Retry Asynchronous
Setup Time to BSCK (Note 3)
Bus Retry Hold Time from BSCK (Note 2)
BSCK to HOLD High (Note 1)
BSCK to HOLD Low (Note 1)
BSCK to BR Low
BSCK to BGACK High (Note 4)
BSCK before going TRI-STATE
Parameter
(Continued)
84
Min
5
5
7
20 MHz
Max
25
22
25
30
TL F 11722 – 71
Units
ns
ns
ns
ns
ns
ns
ns