Intel EP80579

Intel
®
EP80579 Integrated Processor Product Line May 2010
Order Number: 320068-005US 246
Local Expansion Bus (LEB) Interface—Intel
®
EP80579 Integrated Processor Product Line
22.3.6 Input/Output Signal Application
The LEB controller has a total of 17 input/output interfacing signals, which might
required special pull-up resistors. This can occur when the interface is not connected to
a devices or simply not being used.
Address\Data\Control to Other Signals
Spacing
10 mils (min) 12 mils (min)
Buffer Address\Data\Control Breakout
Length (LADC_Brk_out)
1 inch (max) 1 inch (max)
EP80579 Address\Data\Control
(LADC_Total)
max = 8 inch max = 8 inch
EP80579 Address\Data\Control
Breakin Length (LADC_Brk_out)
1 inch (max) 1 inch (max)
Breakout\Breakin Spacing (e2e) 4 mils (min) 4 mils (min)
TL1 5 inch(max) 5 inch(max)
TL2 4 inch(max) 4 inch(max)
TL3 1.5 inch(max) 1.5 inch(max)
Table 91. Address, Data and Control Star Topology Routing Guidelines (Sheet 2 of 2)
Parameter Routing Constraints
Input/Output
EX_ADDR[24:0]
• Address Bus
• Can be left NC when the interface is not connected
to an interfacing device or not used.
EX_DATA[15:0]
• Data Bus
• Can be left NC when the interface is not connected
to an interfacing device or not used.
EX_BE[1:0]#
•Bus Byte Enable
• Can be left NC when the interface is not connected
to an interfacing device or not used.
EX_PARITY[1:0]
•Bus Parity
• Can be left NC when the interface is not connected
to an interfacing device or not used.
EX_RD#
•Bus Read
Note: The EP80579 requires a 2 nSec hold time
during read accesses. Requires to delay
EX_RD# signal if the interfacing device cannot
meet the Thold=2nSec time required by the
EP80579.
• Can be left NC when the interface is not connected
to an interfacing device or not used.
EX_WR#
•Bus Write
• Can be left NC when the interface is not connected
to an interfacing device or not used.