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DP83266 Datasheet(PDF) 138 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # DP83266
Description  MACSITM Device (FDDI Media Access Controller and System Interface)
PDF  152 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP83266 Datasheet(HTML) 138 Page - National Semiconductor (TI)

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80 Signal Descriptions (Continued)
86 ELECTRICAL INTERFACE
Symbol
Pin
IO
Description
LBC5 3
125 126
I
Local Byte Clock
125 MHz clocks with a 5050 duty-cycle generated by the PLAYERa
device
LBC1
127
I
Local Byte Clock
125 MHz clock with a 5050 duty-cycle generated by the PLAYERa
LSC
124
I
Local Symbol Clock
25 MHz clock with a 4060 duty-cycle generated by the PLAYERa
device
RST
128
I
Reset
Active Low input which resets the Internal State Machines and most Registers This
signal must be asserted for at least five clock cycles When asserted all bidirectional signals
are at TRI-STATE
TCK
95
I
TCK JTAG Scan Clock
TMS
94
I
TMS JTAG Mode Select
TDI
93
I
TDI JTAG Data In
TDO
92
O
TDO JTAG Data Out
TRST
91
I
TRST JTAG Reset Active low signal
VCC 11
3 17 32
Positive Power Supply
5V 10% relative to GND
43 54
66 77
97 113
135 146
GND 11
4 18 33
Ground
Power Supply Return
44 55
67 78
96 112
134 145
RSRVD0
88
I
Reserved 0
Must be connected to ground
100 101
NC
89
No Connect
Must be left unconnected
138



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