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Alchemy Au1500-500MBD
General Info
Designer	Alchemy
Manufacturer	TSMC
Model Number	Au1500-500MBD
Part Number	Au1500-500MBD
Market	Embedded
Introduction	June 11, 2001 (announced) December 2001 (launched)
General Specs
Family	Alchemy
Frequency	500 MHz
Microarchitecture
ISA	MIPS32
Microarchitecture	Au1
Core Stepping	AB, AC, AD
Process	180 nm
Technology	CMOS
Word Size	32 bit
Cores	1
Max Memory	192 MiB
Multiprocessing
Max SMP	1-Way (Uniprocessor)
Electrical
Vcore	1.8 V ± 5%
VI/O	3.3 V
TDP (Typical)	1200 mW
Tcase	0 °C – 70 °C
Tstorage	-40 °C – 125 °C

Au1500-500MBD was a 32-bit ultra low power embedded microprocessor with an Au1 CPU core implementing the MIPS32 ISA. Designed by Alchemy Semiconductor and fabricated on a TSMC 180 nm LV process, this SoC operates at a base frequency of up to 500 MHz with a typical TDP of 1200 mW. It is the Pb-free version of the Au1500-500MBC.

Cache

Main article: Au1 § Cache

[Edit/Modify Cache Info]

Cache Organization Cache is a hardware component containing a relatively small and extremely fast memory designed to speed up the performance of a CPU by preparing ahead of time the data it needs to read from a relatively slower medium such as main memory. The organization and amount of cache can have a large impact on the performance, power consumption, die size, and consequently cost of the IC. Cache is specified by its size, number of sets, associativity, block size, sub-block size, and fetch and write-back policies. Note: All units are in kibibytes and mebibytes.

L1$ 32 KiB 32,768 B 0.0313 MiB L1I$ 16 KiB 16,384 B 0.0156 MiB 1 × 16 KiB 4-way set associative   L1D$ 16 KiB 16,384 B 0.0156 MiB 1 × 16 KiB 4-way set associative write-back

Memory controller

Au1500 processors integrate two independent memory controllers, a DRAM controller which supports SDRAM, SMROM, and SyncFlash, and a static bus controller which supports SRAM, ROM, Flash memory, PCMCIA/CompactFlash devices, and I/O peripherals such as an external LCD controller. SDRAM runs at one half of the frequency of the internal 32-bit System Bus, which runs at up to one half of the CPU core frequency.

[Edit/Modify Memory Info]

	Integrated Memory Controller
	Max Type SDR-133 Supports ECC No Max Mem 192 MiB Controllers 1 Channels 1 Width 32 bit Max Bandwidth 0.500 GB/s 0.466 GiB/s 476.837 MiB/s 500 MB/s 4.547474e-4 TiB/s 5.0e-4 TB/s

Expansions

• PCI 2.2 controller, 32-bit bus, 33 or 66 MHz
• USB 1.1 (OHCI) host controller, USB 1.1 device controller
  • Two USB host ports and one device port
• Two 10/100 Mbit/s Ethernet MAC controllers
• Low speed interfaces AC97, 2 × UART, and up to 39 GPIOs

Graphics

This processor has no integrated graphics processing unit.

Features

• 8-channel DMA engine
• RTC and TOY timer
• Two interrupt controllers
• Power management unit
• MIPS EJTAG interface
• Idle Mode, Sleep Mode

Package

• 424-pin low profile, fine pitch plastic ball grid array (LF-PBGA) package
• 23 × 23 grid, 0.8 mm pitch
• 19 mm × 19 mm × 1.45 mm

Bibliography

• "Product Brief: AMD Alchemy™ Solutions Au1500™ Processor Family Internet Edge Processor", AMD Publ. #26329, Rev. D, 2003
• "AMD Alchemy™ Au1500™ Processor Data Book", AMD Publ. #30361, Rev. D, March 2006
• "AMD Alchemy™ Au1500™ Processor Specification Update", AMD Publ. #27362, Rev. E, June 2005
• "Qualification of the AMD Alchemy™ Au1500™ Processor", AMD Publ. #27364, Rev. B, March 2003
• Bassett, Paul. "Alchemy Au1x00", Hot Chips 14, August 19, 2002