Intel Pentium M Processor Design Manual page 183

Table 85. Recommended ITP700FLEX Signal Terminations
Signal
TDI
TMS
TRST#
TCK
TDO
BCLK (p/n)
FBO
RESET#
BPM[5:0]#
DBA#
DBR#
VTAP
VTT
NOTES:
1. See Figure
2. Refer to
3. All of the needed terminations to ensure proper signal quality are integrated inside the Intel Pentium M
processor AGTL+ buffers or inside the ITP700FLEX debug port. No need for any external components for
the BPM[5:0]# signals.
4. Only required when DBA# is used with any target system circuitry. This signal may be left unconnected
when unused.
5. In cases where a system is designed to utilize the ITP700FLEX debug port for debug purposes but the
ITP700FLEX connector may or may not be populated at all times although the signal routing and
termination or decoupling components are implemented, the component placement guidelines should
adhere to the ones listed in
guidelines for non-ITP700FLEX supported systems (see
than the component placement guidelines for the ITP700FLEX supported case, then the more
conservative/restrictive guidelines should be followed.
Design Guide
®
Intel Pentium
Termination Value Termination Voltage
150 Ω ± 5%
39.2 Ω ± 1%
510 – 680 Ω ± 5%
27.4 Ω ± 1%
54.9 Ω ± 1% pull-up
and 22.6 Ω ± 1% series
resistor
Connect to TCK pin of
the Intel Pentium M
processor CPU.
54.9 Ω ± 1% pull-up
and 22.6 Ω ± 1% series
resistor
Not Required
VCC of target system
150-240 Ω ± 5%
VCC of target system
150-240 Ω ± 5%
Short to VCCP plane.
Short to VCCP plane.
125.
Section 10.2.1, "ITP Signal Routing
Table 85. However, for signals where the termination component placement
®
M Processor and Intel
Debug Port and Logic Analyzer Interface
Termination/Decap Location
Within ± 300 ps of the Intel
VCCP (1.05 V) Pentium
pin.
Within ± 200 ps of the
VCCP (1.05 V)
ITP700FLEX connector TMS pin.
Anywhere between the Intel
GND Pentium M processor CPU and
ITP700FLEX connector.
Within ± 200 ps of the
GND
ITP700FLEX connector TCK pin.
Within one inch of the
VCCP (1.05 V)
ITP700FLEX connector TDO pin.
N/A N/A
Within 0.5" of the ITP700FLEX
VCCP (1.05 V)
connector RESET# pin.
Within 1 ns of the ITP700FLEX
recovery circuit. connector DBA# pin.
Within 1 ns of the ITP700FLEX
recovery circuit connector DBR# pin.
VCCP (1.05 V)
Add 0.1 µF decap within 0.1 inch
VCCP (1.05 V) of VTT pins of ITP700FLEX
connector.
Guidelines".
Table 29) are more restrictive or conservative
®
E7501 Chipset Platform
®
®
M processor CPU TDI
Notes
5
5
5
5
1, 5
2
1
1
3
4
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