DP83256VF National Semiconductor, DP83256VF Datasheet - Page 114

• Manufacturer Part Number: DP83256VF
• Description: IC FDDI LAYER CTRLR 160PQFP
• Manufacturer: National Semiconductor
• Series: PLAYER+™r

Specifications of DP83256VF

• Controller Type: physical layer controller
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 160-BFQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Supply: -
• Interface: -
• Other names: *DP83256VF

7 0 Electrical Characteristics
7 5 AC ELECTRICAL CHARACTERISTICS
The AC Electrical characteristics are specified over the Recommended Operating Conditions unless otherwise specified
AC Characteristics for the Control Bus Interface
The following signals are covered Control Bus Interface (R E W E CE E INT E ACK CBA CBD and CBP)
Asynchronous Definitions
Note Min Max numbers are based on T2
Symbol
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
T13
T14
T15
T16
T17
T18
T19
T20a
T20b
T20c
T21
T22
T4 (min)
T4 (max)
T7 (min)
T7 (max)
T8 (min)
T8 (max)
CE Setup to LBC
LBC Period
LBC1 to ACK Low
CE Low to ACK Low
LBC1 Low to CBD(7–0) and CBP Valid
LBC1 to CBD(7–0) and CBP Active
CE Low to CBD(7–0) and CBP Active
CE Low to CBD(7–0) and CBP Valid
LBC Pulse Width High
LBC Pulse Width Low
CE High to ACK High
R W CBA(5–0) CBD(7–0) and CBP Setup to CE Low
CE High to R W CBA(5–0) CBD(7–0) and CBP Hold Time
R W CBA(5–0) CBD(7–0) and CBP to LBC1 Setup Time
ACK Low to CE High Lead Time
CE Minimum Pulse Width High
CE High to CBD(7–0) and CBP TRI-STATE
ACK High to CE Low
CBD(7–0) Valid to ACK Low Setup
LBC1 to R W Hold Time
LBC1 to CBA Hold Time
LBC1 to CBD and CBP Hold Time
LBC1 to INT Low
LBC1 to EP Change
T1
T1
T1
T1
T1
T1
a
a
a
a
a
a
e
(3 T2)
(6 T2)
(2 T2)
(5 T2)
(2 T2)
(5 T2)
80 ns and T9
a
a
a
a
a
a
Descriptions
T3
T3
T6
T6
T9
T9
e
a
a
(Continued)
T10
T5
T5
e
40 ns
114
Min
290
225
265
15
80
35
35
20
20
20
10
10
20
5
5
0
0
0
5
Max
540
475
515
45
60
45
45
45
55
55
25
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns