Intel EP80579 Manual page 307

Table 100. Schematic Checklist (Sheet 24 of 26)
Checklist Items
EX_RDY[3:0]#
EX_BURST
EX_RCOMPP
EX_RCOMPN
Synchronous Serial Port (SSP) Interface
SSP_SCLK,
SSP_SFRM,
SSP_TXD,
SSP_RXD,
SSP_EXTCLK
IEEE 1588 Hardware-Assist Interface
1588_TX_SNAP,
1588_RX_SNAP,
1588_PPS,
1588_TESTMODE_DATA,
ASMSSIG,
AMMSSIG
JTAG
Note: See the application debug port design guide for information.
TCK
TDI
®
Intel EP80579 Integrated Processor Product Line
Platform Design Guide
307
®
Intel EP80579 Integrated Processor Product Line—Schematics Checklist
I/O Type
Recommendations
(Default)
• HPI Interface ready signals
• Pull-up to Platform 3.3V (VCC3)
I
supply through a 10 KΩ ±5%
resistor
• Expansion bus burst transfer
I
operation
• Connect through a 50Ω ±1%
I/O
resistor to Ground.
• Pull up to EP80579 3.3V
I/O (VCC33) supply through a 50Ω
±1% resistor
Synchronous Serial Port Interface
signals
• Connect appropriately to the
I/O HSS or TDM (Mezzanine) port
connectors.
• Used for HSS (TDM) port
configuration
• Connect appropriately 1588
Hardware Assist signals from/to
I/O
EP80579 and connector or
header.
Miscellaneous I/O Interface
Pull-down to ground through a 51Ω
±5% resistor
Pull-up to Platform 1.2V (V1P2)
supply through a 51Ω ±5% resistor
Comments
• These signals are used to halt
accesses using expansion bus chip
selects 7 through 4 when the chip
selects are configured to operate in
HPI mode.
• There is one EX_RDY# signal per
chip select.
• The signals only affects accesses
that use EX_CS[7:4]#
Note:
• Must be pulled high through a 10
KΩ resistor when the interface is not
used or connected to an interfacing
device
• For inbound transfers, this signal is
used to signify that a burst
operation is being requested
Note:
• Must be pulled high through a 10
KΩ resistor when the interface is not
used or connected to an interfacing
device
Resistive compensation (Positive)
Resistive compensation (Negative)
Note:
IF the port is not used, the interface
signals should be terminated as follows
• SSP_RXD and SSP_EXTCLK must
each be pulled high through a 10
KΩ resistor.
• SSP_SCLK, SSP_TXD, SSP_SFRM
can be left as no connect (NC)
Note:
IF the port is not used, the interface
signals should be terminated as follows
• ASMSSIG and AMMSSIGG must
each be pulled down through a 10
KΩ resistor.
• 1588_TX_SNAP, 1588_RX_SNAP,
1588_PPS, and
1588_TESTMODE_DATA can be left
as no connect (NC)
Order Number: 320068-005US
May 2010