VCBUP8168CCYG2

Manufacturer Part NumberVCBUP8168CCYG2
DescriptionDigital Signal Processors & Controllers - DSP, DSC DaVinci Digital Media Processor
ManufacturerTexas Instruments
SeriesTMS320DM8168
VCBUP8168CCYG2 datasheet
 


Specifications of VCBUP8168CCYG2

RohsyesCoreTMS320DM816x
Data Bus Width32 bitProgram Memory Size32 KB
Data Ram Size256 KBMaximum Clock Frequency1.35 GHz
Number Of Programmable I/os64Number Of Timers7
Device Million Instructions Per Second9000 MIPsOperating Supply Voltage1.5 V, 1.8 V, 3.3 V
Maximum Operating Temperature+ 95 CPackage / CaseFCBGA-1031
Mounting StyleSMD/SMTInstruction Set ArchitectureFloating Point
Interface TypeSPIMinimum Operating Temperature0 C
On-chip AdcNoProcessor SeriesTMS320DM8168
ProductDSPsProgram Memory TypeCache
Supply Current3.3 VSupply Voltage - Min1.5 V
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8.3.2.16 Routing Specification
8.3.2.16.1 CK and ADDR_CTRL Routing Specification
Skew within the CK and ADDR_CTRL net classes directly reduces setup and hold margin and, thus, this
skew must be controlled. The only way to practically match lengths on a PCB is to lengthen the shorter
traces up to the length of the longest net in the net class and its associated clock. A metric to establish
this maximum length is Manhattan distance. The Manhattan distance between two points on a PCB is the
length between the points when connecting them only with horizontal or vertical segments. A reasonable
trace route length is to within a percentage of its Manhattan distance. CACLM is defined as Clock Address
Control Longest Manhattan distance.
Given the clock and address pin locations on the processor and the DDR3 memories, the maximum
possible Manhattan distance can be determined given the placement.
this distance for four loads and two loads, respectively. It is from this distance that the specifications on
the lengths of the transmission lines for the address bus are determined. CACLM is determined similarly
for other address bus configurations; that is, it is based on the longest net of the CK and ADDR_CTRL net
class. For CK and ADDR_CTRL routing, these specifications are contained in
(A)
A8
A2
A.
It is very likely that the longest CK and ADDR_CTRL Manhattan distance will be for Address Input 8 (A8) on the
DDR3 memories. CACLM is based on the longest Manhattan distance due to the device placement. Verify the net
class that satisfies this criteria and use as the baseline for CK and ADDR_CTRL skew matching and length control.
The length of shorter CK and ADDR_CTRL stubs as well as the length of the terminator stub are not included in this
length caculation. Non-included lengths are grayed out in the figure.
Assuming A8 is the longest, CALM = CACLMY + CACLMX + 300 mils.
The extra 300 mils allows for routing down lower than the DDR3 memories and returning up to reach A8.
Figure 8-37. CACLM for Four Address Loads on One Side of PCB
Copyright © 2011–2013, Texas Instruments Incorporated
Product Folder Links:
CACLMX
(A)
(A)
(A)
A8
A8
A8
A3
A4
A3
=
Submit Documentation Feedback
TMS320DM8168 TMS320DM8167 TMS320DM8166 TMS320DM8165
TMS320DM8168, TMS320DM8167
TMS320DM8166, TMS320DM8165
SPRS614D – MARCH 2011 – REVISED JANUARY 2013
Figure 8-37
and
Figure 8-38
show
Table
8-24.
CACLMY
(A)
A8
Rtt
AT
Vtt
Peripheral Information and Timings
203