SEIGNEURIE J.M. HERVE Overview. This document describes desi

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Migrating from STPC Consumer-S STPC Consumer-II
SEIGNEURIE J.M. HERVE
Overview.
This document describes design STPC Consumer-S that replaced STPC Consumer-II once silicon becomes available. information extracted from STPC Consumer-S STPC Consumer-II datasheets.
Differences between devices.
Functional difference.
STPC Consumer-II 0.25µm version STPC Consumer-S which based 0.35µm technology with resulting advantages speed power consumption. result, list functionnal differences between devices very limited. Improved features: STPC Consumer-II supports 64-Mbit 128-Mbit SDRAM devices. features: JTAG. Synchronisation CRTC external video signal. Color_Compare output signal, coming from picture-in-picture block. devices have also some differences term strap options, RAMDAC reference current.
April
Issue
APPLICATION NOTE
Pinout differences.
TABLE Pinout differences Ball
AF10 AD12 AC17 AC15 AD13
STPC Consumer-S
VDD_DAC2 VSS_DAC2 VSS_DLL VDD5 VDD5 VDD5 VDD5 3.3V 3.3V VSS_DLL 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V
STPCConsumer-II
TCLK Hi-Z PA[22] Hi-Z PA[23] COL_SEL 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V
Comment
JTAG JTAG JTAG JTAG Local Local Color_Compare Output
Power Supply pads Power Supply pads Power Supply pads Power Supply pads VDD_DAC1 VDDA_TV VSS_DLL connected VDD_CPUCLK_PLL VDD_HCLK_PLL VDD_DEVCLK_PLL VDD_MCLKI_PLL VDD_MCLKO_PLL VDD_DCLK_PLL Core Power Supply Core Power Supply Core Power Supply Core Power Supply
Connected pins (NC) bonded left routed signal other configuration. signals local Tri-State when STPC mode.
Issue
April 2001
APPLICATION NOTE
Strap Option differences.
Basically, strap option differences divided categories: ones, ones with potentially different configuration. TABLE strap options Signals
MD[1] MD[3:2] MD[4] MD[5] MD[6] MD[7] MD[13:10] MD[14]
Consumer-II
DACs test mode HCLK Speed PCI_CLKO divisor HCLK synchro PCI_CLK speed PCI_CLK speed PCI_CLK deskew x2/x4
Comment
Pull-Up Extends MD[26:24] improve HCLK speed selection Extends MD[17] improve PCI_CLKO speed selection Pull-Up HCLK MCLK, Pull-Down otherwise Pull-Down PCI_CLK 32MHz, otherwise Pull-Up Pull-Down Value finalized Pull-Up
TABLE Strap options with potentially different configuration Signals
MD[26:24] MD[30:27] MD[35:31] MD[43:41] MD[46:45]
Consumer-II
HCLK Speed HCLK Delay HCLK Skew Value HCLK mode
Comment
Value changed MD[3:2] extending HCLK speed selection Value finalized Value finalized Value finalized Value finalized (Pull default)
RAMDAC differences.
Migrating from STPC Consumer-S STPC Consumer-II, resistor RSET becomes Ohms instead Ohms
April
Issue
APPLICATION NOTE
Solution.
2.5V Power Pins.
consumer-II certain number balls powered with 2.5V supply 3.3V. These must connected 2.5V supply which located same plane 3.3V supply. VSS_DLL ball (E25) needs connected ground (Consumer-S) 2.5V power plane (Consumer-II) using null resistor, solder drop, equivalent method.
Connected balls.
balls which Connected STPC Consumer-S STPC Consumer-II configuration left routed. result summarized following table: TABLE Untouched signals Ball
AF10 D18, A16, B11,
Signal
TCLK Hi-Z PA[22] Hi-Z PA[23] COL_SEL VDD_DAC2 VSS_DAC2 VSS_DLL VDD5
Comment
JTAG JTAG JTAG JTAG Local Local Color_Compare Output
Power Supply pads
Strap options.
strap options implemented STPC Consumer-S, this does affect behaviour device. strap options with different values should remmain easy modify. This achieved using dummy resistor schematics doing final choice during assembly board.
Issue
April 2001
APPLICATION NOTE
Technical Support
STMicroelectronics Internet with worldwide (WWW) site which product presentation, technical literature well product support information found. dedicated STPC section available providing date hardware documentation software tools. address
http://www.st.com/stpc
Update History Application Note 1217
This first issue.
Page Section Change Text
April
Issue
APPLICATION NOTE
Issue
April 2001
Information furnished believed accurate reliable. However, STMicroelectronics assumes responsibility consequences such information infringement patents other rights third parties which result from use. license granted implication otherwise under patent patent rights STMicroelectronics. Specifications mentioned this publication subject change without notice. This publication supersedes replaces information previously supplied. STMicroelectronics products authorized critical components life support devices systems without express written approval STMicroelectronics. 2000 STMicroelectronics Rights Reserved logo registered trademark STMicroelectronics. other names property their respective owners. STMicroelectronics GROUP COMPANIES Australia Brazil China France Germany Italy Japan Korea Malaysia Malta Mexico Morocco Netherlands Singapore Spain Sweden Switzerland Taiwan Thailand United Kingdom U.S.A.
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