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DP83816 Datasheet(PDF) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. DP83816
Description  10/100 Mb/s Integrated PCI Ethernet Media Access Controller and Physical Layer (MacPHYTER-II )
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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DP83816 Datasheet(HTML) 6 Page - National Semiconductor (TI)

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2.0 Pin Description (Continued)
SERRN
98
I/O
System Error: This signal is asserted low by DP83816 during address parity errors
and system errors if enabled.
STOPN
96
I/O
Stop: This signal is asserted low by the target device to request the master device
to stop the current transaction.
TRDYN
93
I/O
Target Ready: As a master, this signal indicates that the target is ready for the data
during write operation and with the data during read operation. As a target, this
signal will be asserted low when the (target) device is ready to complete the current
data phase transaction. This signal is used in conjunction with the IRDYN signal.
Data transaction takes place at the rising edge of PCICLK when both IRDYN and
TRDYN are asserted low.
PMEN/
CLKRUNN
59
I/O
Power Management Event/Clock Run Function: This pin is a dual function pin.
The function of this pin is determined by the CLKRUN_EN bit 0 of the CLKRUN
Control and Status register (CCSR). Default operation of this pin is PMEN.
Power Management Event: This signal is asserted low by the DP83816 to indicate
that a power management event has occurred. For pin connection please refer to
Section 6.7.
Clock Run Function: In this mode, this pin is used to indicate when the PCICLK
will be stopped.
3VAUX
122
I
PCI Auxiliary Voltage Sense: This pin is used to sense the presence of a 3.3V
auxiliary supply in order to define the PME Support available. For pin connection
please refer to Section 6.7.
This pin has an internal weak pull down.
PWRGOOD
123
I
PCI bus power good: Connected to PCI bus 3.3V power, this pin is used to sense
the presence of PCI bus power during the D3 power management state.
This pin has an internal weak pull down.
PCI Bus Interface
Symbol
LQFP Pin
No(s)
Dir
Description


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