STPCI2HDYI STMicroelectronics, STPCI2HDYI Datasheet - Page 89
STPCI2HDYI
Manufacturer Part Number
STPCI2HDYI
Description
Manufacturer
STMicroelectronics
Datasheet
1.STPCI2HDYI.pdf
(108 pages)
Specifications of STPCI2HDYI
Operating Temperature (min)
-40C
Operating Temperature (max)
115C
Processing Unit
Microprocessor
Operating Supply Voltage (min)
2.45/3V
Operating Supply Voltage (typ)
2.5/3.3V
Operating Supply Voltage (max)
2.7/3.6V
Package Type
BGA
Screening Level
Industrial
Pin Count
516
Mounting
Surface Mount
Rad Hardened
No
Lead Free Status / RoHS Status
Supplier Unconfirmed
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6.3.13. JTAG INTERFACE
The STPC integrates a JTAG interface for scan-
chain and on-board testing. The only external
Figure 6-19. Typical JTAG implementation
6.4. PLACE AND ROUTE RECOMMENDATIONS
6.4.1. GENERAL RECOMMENDATIONS
Some STPC Interfaces run at high speed and
need to be carefully routed or even shielded like:
1) Memory Interface
2) PCI bus
3) Graphics and video interfaces
4) 14 MHz oscillator stage
All clock signals have to be routed first and
shielded for speeds of 27MHz or higher. The high
speed signals follow the same constraints, as for
the memory and PCI control signals.
The next interfaces to be routed are Memory, PCI,
and Video/graphics.
STPC
TCLK
TRST
TMS
TDO
TDI
3V3
3V3
3V3
device needed are the pull up resistors.
19
devices.
All the analog noise-sensitive signals have to be
routed in a separate area and hence can be routed
indepedently.
6.4.2. PLL DEFINITION AND IMPLIMENTATION
PLLs are analog cells which supply the internal
STPC Clocks. To get the cleanest clock, the jitter
on the power supply must be reduced as much as
possible. This will result in a more stable system.
Each of the integrated PLL has a dedicated power
pin so a single power plane for all of these PLLs, or
one wire for each, or any solution in between
which help the layout of the board can be used.
Powering
capacitances is enough. We recommend at least 2
capacitances: one 'big' (few uF) for power storage,
and one or 2 smalls (100nF + 1nF) for noise
filtering.
describes a typical implementation using these
3V3
these
Connector
10
8
6
4
2
pins
9
7
5
3
1
with
STPC® ATLAS
one
Ferrite
Figure 6-
89/108
1
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