ASPEED AST2500/AST2520 A2 Datasheet – V1.6
Revision History
Date Revision Description
Jul. 04, 2014 0.1 Initial draft.
Jan. 22, 2015 0.9 1. Release for chip revision A1.
2. Add chip revision A1 migration list at next page.
3. Add per-pin function configuration table at Section 5.3.
4. Add Reset Source Table at Section 6.
5. Add USB ports configuration mode description at Section 1.8.5.
6. Add Firmware update methods description at Section 1.9.
7. Add Firmware boot up sequence diagram at Section 10.
8. Revise IV11D from 1.1V to 1.15V.
9. Add ESD specification.
10. Revise DACRSET external resistor value to 18KΩ.
Jun. 22, 2015 1.0 1. Add CMOS IO 2.5V/1.8V DC spec.
2. Add feature of PCI-Express Master.
3. Rename power ball T11 from PV33D to MPLLAV33, this power ball
requires isolated power rail with low noise.
4. Add specification for overshoot, undershoot, and ringback at section 3.3.
5. Add power consumption information at section 3.6.
6. Add DC electrical specification for DDR, USB, BSRAM at section 3.9.
7. Add AC electrical specification at section 3.10.
8. Add thermal specification at section 3.11.
9. Update firmware programming note at section 9.
10. Update the timing waveform of SGPIO master at section 2.6.1.
11. Add verilog example of SGPIO shifter at section 2.6.2.
12. Revise the pull up power of MAC TX strap pins.
13. Revise some values in the power up sequence at section 3.7.
Oct. 15, 2015 1.1 1. Revise boot up sequence diagram at section 10.
2. Add registers specification of APB to PCIe Bus Bridge at section 30.
3. Add registers specification of PCIe Host Controller at section 51.
4. Add firmware related APnote of Application Note 1 and
Application Note 2.
5. Add hardware related APnote or Application Note 3.
6. Rename ”Graphics Display Controller” to ”SOC Display Controller”.
7. Remove ”Graphics Display Controller” feature on AST2520.
8. Add architecture block diagram of AST2520 at Figure-2.
Mar. 30, 2016 1.2 1. Release for chip revision A2.
2. Fix eSPI SUART1/SUART2 IRQ number issue.
3. Update chip hardware revision ID at SCU7C.
May. 18, 2016 1.3 1. Revise ADC DC specification.
2. Add power down sequence for firmware at section 3.8.
Jun. 07, 2016 1.31 1. Revise power down sequence for firmware at section 3.8. AST2510 do not
require to care the power down sequence.
Nov. 08, 2016 1.4 1. Revise reset function of SPI1/SPI2 controller at section 6.2.
2. Remove MACD0 and MACD4 at section 16. Please refer document E2500-
01 or Errata List.
3. Relax AC timing rise/fall time specification of RGMII, SPI, and eSPI.
4. Add recommended operating temperature of T
C
.
Jan. 09, 2017 1.5 1. Add Strap input pins AC timing specification at section 3.10.15.
2. Remove USB portB USB2.0 Device Controller feature. Please refer docu-
ment E2500-02 or Errata List.
May. 12, 2017 1.6 1. Revise SPI master AC timing specification at section 3.10.7.
2
. Revise eSPI AC timing specification at section 3.10.8.
3
. Revise I2C AC timing specification at section 3.10.11.
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ASPEED Confidential All rights reserved. 3 M
ay 12, 2017
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