Intel Pentium M Processor Design Manual page 253

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Table 97. Intel ICH3-S Schematic Checklist (Sheet 2 of 8)
Checklist Items
GPIO[43:32]
HI[11:0]
HI_STBS
HI_STBF
HICOMP
HIREF
HITERM
PDD[15:0]
SDD[15:0]
PDIOW#
PDIOR#
PDDACK#
PDA[2:0]
PDCS1#
PDCS3#
SDIOW#
SDIOR#
SDDACK#
SDA[2:0]
SDCS1#
SDCS3#
PDREQ
SDREQ
PIORDY
SIORDY
IRQ14
IRQ15
IDERST#
Design Guide
® ®
Intel Pentium M Processor and Intel
Recommendations
From main power well (VCC_3.3).
Hub Interface Signals
No pull-up resistor required.
78.7 Ω ± 1% pull-up resistor to VCC_1.8.
Divider circuit required. See Figure 82
information.
IDE Signals
No extra series termination resistors or other
pull-ups/pull-downs are required.
No extra series termination resistors. Pads for
series resistors may be implemented should the
system designer have signal integrity concerns.
• No extra series termination resistors.
• No pull-down resistors required.
• No extra series termination resistors.
• 4.7 k Ω ± 5% pull-up to 3.3 V
• 8.2 k Ω – 10 k Ω pull-up resistors to 3.3 V
• No extra series termination resistors.
The PCIRST# signal should be buffered to form
the IDERST# signal. A 22 – 47 Ω series resistor
is recommended on this signal.
®
E7501 Chipset Platform
Schematic Checklist
Comments
• I/O pins.
• Defaults as an output when
enabled as GPIOs.
• GPIO[31:29] is not
implemented.
Refer to Section
Refer to Section
for circuit
Refer to Section
• Refer to the ATA/ATAPI-6
specification. These signals
have integrated series resistors.
• Refer to Section
• Simulation data indicates that
the integrated series
termination resistors are a
nominal 33 Ω, but may range
from 31 Ω to 43 Ω .
• These signals have integrated
series resistors.
• Refer to Section
• Simulation data indicates that
the integrated series
termination resistors are a
nominal 33 Ω , but may range
from 31 Ω to 43 Ω .
• These signals have integrated
series resistors in the ICH3-S.
• These signals have integrated
pull-down resistors in the
ICH3-S.
• Refer to Section
• These signals have integrated
series resistors in the Intel
ICH3-S.
• Refer to Section
• Open drain outputs from drive.
• Refer to Section
Refer to Section
7.3.1.
7.3.3.
7.3.2.
9.1.3.
9.1.3.
9.1.3.
9.1.3.
9.1.3.
9.1.3.
253