DP83257VF National Semiconductor, DP83257VF Datasheet - Page 117
DP83257VF
Manufacturer Part Number
DP83257VF
Description
IC FDDI LAYER CTRLR 160PQFP
Manufacturer
National Semiconductor
Datasheet
1.DP83256VF.pdf
(144 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DP83257VF
Manufacturer:
NVIDIA
Quantity:
12 388
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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
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