Figure 13. Schematic Revision History - STMicroelectronics EVALSPEAr320CPU User Manual

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Figure 13. Schematic revision history

4
Revision History
Revision Descriptions
1.0 Initial release
C78, C79 : connected to GND instead of 2.5V
1.1
Add signal nRESET to daughter-board connectors (pinout to be defined)
4
Add three optionals USBLC6 (U13, U14, U15) for ESD protection
Add optional STBP120B (U16) for overvoltage protection
Add two Spare Resistor for RTC Power (R76, R77)
Add four 3.2mm mechanical holes
Add two GND pins on 32.768Khz oscillator for PCB footprint
Changed daughter-board connectors (Tyco MICTOR instead Samtec QTH)
Made some cosmetic changes
Changed daughter-board connectors ( Samtec MIS instead Tyco MICTOR)
1.2
Add four 47uF capacitor (C94, C95, C96, C97)
1.3
Remove UART Solution 1 at Page 7
1.4
Remove JTAG alternativ Optional part at Page 4
3
Add a 10uF capacitor at input pot of STBP120, C98
Add two net: RS232_RXD and RS232_TXD at Page 7 U12-pin 14 and U12-pin13,
these two net are connected to Pin40 and Pin42 of J13, Remove Test Point TP3 and TP4
Change footprint of D4(TS420-B), from DO-214AC to DPAK
Add C99 0.1uF,0402 capacitor to Spear300 VREF pin
Add R78 0ohm resistor to Pin17 of J3 JTAG Port, and another pad be connected to GND
Add R79 0ohm resistor to Pin19 of J3 JTAG Port, and another pad be connected to GND
Add GND to C94, C95,C96,C97
FB8 is only connected to PIN 6 of J1 at Page3
1.5
Add a FB16, FB16 is connected to PIN 5 of J1 at Page3
FB9 is connected to PIN 9 and PIN 11 of J2 at Page3
FB10 is connected to PIN 10 and PIN 12 of J2 at Page3
1.5.1
Swap U2 and U3 data signals for better pcb routing at Page2
Swap Socket J12 and J13 signals and add four 1.8V power pins to J12 at Page7
2
R11~R21 pull up to 3.3V (change from 3.3V_SP)at Page4
D3 Pin.A1 connect to 3.3V (change from 3.3V_SP)at Page4
1.6
Change all "Motherboard" to "CPU Board"
Apdate Fiducial (REF*) symbol.
1.7
Pull down U10.4 CSNS to AGND
Connect U10.39 SET_PH1 to AGND
1.8
Change U13.5 net to USB_DEV_5V, Add C102 to Vbus pin
Change U14.5 net to HOST0_5V, Add C101 to Vbus pin
Change U15.5 net to HOST1_5V, Add C100 to Vbus pin
Modify USB ESD circuit design, insert ESD IC into USB signals: DM and DP,
include USB DEV and Two USB Host
1
1.9
Pull up R61 to 1.2V
Change RS232-TXD net to J17.5 pin
Change RS232-RXD net to J17.3 pin
Change R72,R73,R74 value to 1K ohm
Change R41 value to 680 ohm
Change R75 value to 330 ohm
4
3
Date Revision Descriptions
2.0
20 May 2009
28 May 2009
2.1
2.2
2.3
10 June 2009
25 June 2009
03 July 2009
NOTE:
03 July 2009
10 July 2009
17 July 2009
21 July 2009
23 July 2009
10 Sep 2009
3
2
Revision History
Change R49 Value to 56K ohm
Add TP30 for DQS1 test; Add J22 for serial cable jumper ; Use NC for
Change R8 and R9 to "470 ohm" (remove NC), and R51 and R52 to "0
Made some cosmetic changes
Projec Projec Projec
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