DP83257VF National Semiconductor, DP83257VF Datasheet - Page 117

• Manufacturer Part Number: DP83257VF
• Description: IC FDDI LAYER CTRLR 160PQFP
• Manufacturer: National Semiconductor

Specifications of DP83257VF

• 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: *DP83257VF

7 0 Electrical Characteristics
AC Characteristics for the Clock Interface Signals (Timing and Relationships)
Note 1 LSC loading must always be less than or equal to LBC1 loading
Symbol
T
T
T
T
T
T
T
T
T
T23
T24
Phase1
Phase2
Phase3
Phase4
Phase1
Phase2
Phase3
Phase4
Phase5
LBC1–LBC2 Timing
LBC1–LBC3 Timing
LBC1–LBC4 Timing
LBC1–LBC5 Timing
LBC1–LBC2 Timing
LBC1–LBC3 Timing
LBC1–LBC4 Timing
LBC1–LBC5 Timing
LBC5 Rising-
LBC1 Falling Timing
LSC Falling to LBC1
REF IN to FBK IN
Parameter
FIGURE 7-6 Clock Signal Relationships
(Continued)
PH SEL
PH SEL
PH SEL
PH SEL
PH SEL
PH SEL
PH SEL
PH SEL
PH SEL
PH SEL
In Lock
Conditions
(Note 1)
e
e
e
e
e
e
e
e
e
e
117
LOW
LOW
LOW
LOW
HIGH
HIGH
HIGH
HIGH
LOW or
HIGH
13 0
21 0
29 0
45 0
13 0
61 0
29 0
Min
5 0
5 0
b
b
3
2
Typ
16
24
32
48
16
64
32
8
8
Max
11 0
19 0
27 0
35 0
51 0
19 0
67 0
35 0
12 0
a
a
6
2
TL F 11708 – 33
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns