Debug Port Design Guide for UP/DP Systems

XDP-SSA Design Guide
28 DPDG for UP/DP Systems Order Number: 313373-001
4.3.3 TRSTn Routing Guidelines
The XDP-SSA TRSTn routing guidelines are the same as those for the XDP0 TRSTn
routing guidelines (see Section 3.3.4, “TRSTn Routing Guidelines” on page 18).
There is no trace length requirement for this signal.
4.4 Run Control Routing Guidelines
Please see Section 3.7.2, “Observation Port Routing” on page 21.
4.5 System Control Routing Guidelines
• System Control operations report or manage the system power, scan, and reset
states of the target system. These signals are HOOK[0:7] on the XDP-SSA debug
port. HOOK[1:3] are generally left as no-connects.
4.5.1 PWRGOOD (HOOK0) Routing Guidelines
The XDP-SSA PWRGOOD routing guidelines are the same as those for the XDP0
PWRGOOD routing guidelines (see Section 3.5.1, “PWRGOOD (HOOK0) Routing
Guidelines” on page 19).
4.5.2 Reserved (HOOK[1:3])
These signals are reserved. No connections to these signals are required.
4.5.3 ITPCLK/ITPCLK# (HOOK[4:5]) Routing Guidelines
The XDP-SSA HOOK[4:5] routing guidelines are the same as those for the XDP0
HOOK[4:5] (see Section 3.5.5, “ITPCLK/ITPCLK# (HOOK[4:5]) Routing Guidelines” on
page 19).
4.5.4 RESET_IN# (HOOK6) Routing Guidelines
The XDP-SSA HOOK6 routing guidelines are the same as those for the XDP0 HOOK6
(see Section 3.5.6, “RESET_IN# (HOOK6) Routing Guidelines” on page 20).
4.5.5 RESET_OUT# (HOOK7) Routing Guidelines
The XDP-SSA HOOK7 routing guidelines are the same as those for the XDP0 HOOK7
(see Section 3.5.7, “RESET_OUT# (HOOK7) Routing Guidelines” on page 20).
4.6 I2C* Routing Guidelines
The XDP-SSA I2C* routing guidelines are the same as those for the XDP0 I2C* (see
Section 3.6, “I2C* Routing Guidelines” on page 20).
4.7 Observation Port Routing Guidelines
There is a single observation ports on the XDP-SSA labeled A. The observation port is
made up of 4 OBSDATA lines and 2 OBSFN control/strobe lines.