DP83850CVF National Semiconductor, DP83850CVF Datasheet - Page 30
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DP83850CVF
Manufacturer Part Number
DP83850CVF
Description
IC CONTROLLER INTERFACE 132-PQFP
Manufacturer
National Semiconductor
Datasheet
1.DP83850CVF.pdf
(37 pages)
Specifications of DP83850CVF
Controller Type
Ethernet Repeater Interface Controller
Interface
Serial
Voltage - Supply
4.75 V ~ 5.25 V
Current - Supply
295mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
132-MQFP, 132-PQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
*DP83850CVF
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DP83850CVF
Manufacturer:
Texas Instruments
Quantity:
10 000
Part Number:
DP83850CVF
Manufacturer:
NS/国半
Quantity:
20 000
6.0 A.C. and D.C. Specifications
6.2.3 Inter Repeater Receive and Intra-Repeater Collision Timing
Note 3: “RXxxx” refers to any of the receive signals, i.e. RXC, RXD[3:0], RX_DV. or RX_ER. “IRxxx” refers to any of the
Inter Repeater signals, i.e. IRD_CK, IRD[3:0], /IRD_V, or /IRD_ER.
Note 4: This parameter refers to the delta in delay between any of the Inter Repeater signals.
Note 5: “CRSx” refers to any of CRS[11:0] signals being asserted.
Note 6: This timing refers to the assertion of /IR_COL_OUT during an internal collision, that is when 2 or more CRSx
signals are asserted in the same DP83850C.
Note 7: This timing refers only to the condition where only one CRSx is present. IRD_ODIR will be deasserted immedi-
ately if a collision occurs.
Note 8: The assertion of IRD_ODIR is also dependent upon an equality comparison on IR_VECT[4:0]. These timings
reflect a direct feedback path at the IR_VECT I/O pins. If external buffers are used, then these timings are increased by
the external delay of the buffers.
T12a Receive to Inter Repeater Bus skew
T17a /ACTIVEO to IRD_ODIR delay
T12 Receive to Inter Repeater Bus delay
T13 CRSx assertion (de-assertion) to -ACTIVEO assertion (de-assertion)
T14 CRSx assertion (de-assertion) to /IR_ACTIVE assertion (de-assertion)
T15 CRSx assertion (de-assertion) to /IR_COL_OUT assertion (de-assertion)
T16 CRSx assertion (de-assertion) to IR_VECT[4:0] assertion (d2-assertion)
T17 CRSx assertion to IRD_ODIR assertion with no collision
T18 CRSx de-assertion to IRD_ODIR de-assertion
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Description
5, 7
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5,8
5
5
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5,6
Min Max Units
6.5
4
www.national.com
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LCK
ns
ns
ns
ns
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ns
ns