IDT(ZMDI / GigPeak) GigaDevice(ISSI) SKYWORKS(RFaxis / Anadigics) MAX ECHO Movidius

Memory

Feature	Architecture	Organization	Density (Kb)	Bus Width (bits)
SRAMs	Asynchronous	2K, 8K, 32K, 64K, 128K, 256 K , 512Kx 8	16, 64, 256, 1024, 4096	8, 16
	Synch Burst	32K, 64K  128K  256K, 512K  x 18, 32, 36	256, 512, 1024, 2048, 4608	18, 32, 36
Asynchronous FIFOs	Uni-directional	256, 512, 1K, 2K, 4K, 8K, 16K  32K, 64K	2, 4, 9, 18, 36, 72, 144         288, 512	9
	Parallel/Serial  FIFOs	1K x 16	16	16
	Dual FIFO	256, 512, 1K, 2K,4K, 8K	2, 4, 9, 18, 36, 72	9
SynchronousFIFOs	Uni-directional	64, 256, 512, 1K, 2K, 4K, 8K        16K, 32K, 64K, 128K	2, 4, 9, 18, 36, 72, 144, 288 512, 1024	8, 9, 18, 36
	Bi-directional	64, 256, 512, 1K,2K, 8K	4, 9, 18, 36, 72, 144, 512	18, 36
	Dual FIFO	256, 512	2, 4	9, 18
Dual-PortRAMs	Async	1K, 2K, 4K, 8K, 16K, 32K, 64K, 128K	8, 16, 32, 64, 128, 256, 512, 1024	8, 16
		2K, 4K, 8K, 16K, 64K, 128K	18, 36, 72, 144, 5761152 4608, 9216, 18432	9, 18, 36
	Sync	32K, 64K, 128K	256, 512, 1024	8, 16
		4K, 8K, 16K, 32K, 128K	36, 72, 144, 288, 1152, 23044608, 9216, 18432, 36864	9, 18, 36, 72
BankSwitchableRAMs	Sync	128K, 256K, 512K	4608, 9216	18, 36
FourPortRAMs	Async	1K, 2K, 4K, 64K	4, 8, 16 , 1152	18, 36