gwixp425bdt Intel Corporation, gwixp425bdt Datasheet - Page 43
gwixp425bdt
Manufacturer Part Number
gwixp425bdt
Description
Intel Xp42x Product Line Of Network Processors And Ixc1100 Control Plane Processor
Manufacturer
Intel Corporation
Datasheet
1.GWIXP425BDT.pdf
(134 pages)
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Table 11.
Datasheet
UTOPIA-2 Interface (Sheet 2 of 2)
UTP_IP_FCI
UTP_IP_SOC
UTP_IP_DATA[7:0]
UTP_IP_ADDR[4:0]
UTP_IP_FCO
1.
2.
†
Intel
®
Name
While PWRON_RESET_N is deasserted use Power On Reset column for the pin state.
After deassertion of PWRON_RESET_N, and deassertion of RESET_IN_N, and assertion of
PLL_LOCK, all signals reflect the value shown in the RESET column.
For a legend of the Type codes, see
IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
Document Number: 252479, Revision: 005
Reset
Power
On
Z
Z
Z
Z
Z
1
Reset
VI
VI
VI
VI
Z
2
Type
O
O
Table 5 on page
I
I
I
†
UTOPIA Input Data flow control input signal. Also known
as RXEMPTY/CLAV.
Used to inform the processor of the ability of each polled
PHY to send a complete cell. For cell-level flow control in
an MPHY environment, RxClav is an active high tri-
stateable signal from the MPHY to ATM layer. The
UTP_IP_FCI, which is connected to multiple MPHY
devices, will see logic high generated by the PHY, one
clock after the given PHY address is asserted, when a full
cell can be received by the PHY. The UTP_IP_FCI will see
a logic low generated by the PHY, one clock cycle after the
PHY address is asserted if a full cell cannot be received
by the PHY.
In SPHY mode, this signal is used to indicate to the
processor that the PHY has an octet or cell available to be
transferred to the processor.
Should be pulled low through a 10-K: resistor when not
being utilized in the system.
Start of Cell. RX_SOC
Active-high signal that is asserted when UTP_IP_DATA
contains the first valid byte of a transmitted cell.
Should be pulled low through a 10-K: resistor when not
being utilized in the system.
UTOPIA input data. Also known as RX_DATA.
Used by to the processor to receive data from an ATM
UTOPIA-Level-2-compliant PHY.
Should be pulled low through a 10-K: resistor when not
being utilized in the system.
Receive PHY address bus.
Used by the processor when operating in MPHY mode to
poll and select a single PHY at any one given time.
UTOPIA Input Data Flow Control Output signal: Also
known as the RX_ENB_N.
In SPHY configurations, UTP_IP_FCO is used to inform
the PHY that the processor is ready to accept data.
In MPHY configurations, UTP_IP_FCO is used to select
which PHY will drive the UTP_RX_DATA and
UTP_RX_SOC signals. The PHY is selected by placing
the PHY’s address on the UTP_IP_ADDR and bringing
UTP_OP_FCO to logic 1 during the current clock, followed
by the UTP_OP_FCO going to a logic 0 on the next clock
cycle.
33.
Description
March 2005
43
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