The TS-109Pro II is based on Marvell’s SoC controller 88F5182.
This Orion series of SoC controllers seems to be popular among developers because both products from Synology we have dealt with are based on chips from the same series. Besides various interface controllers (SATA, Gigabit Ethernet, PCI Express, PCI, etc), the 88F5182 incorporates a Feroceon core (based on the ARM9 architecture) with dedicated 32KB caches. The NAS’s internal and external SATA interfaces are based on the SATA controller integrated into the 88F5182.
The 88F5182 can work with both DDR and DDR2 memory. QNAP’s engineers chose the more modern type and installed four DDR2 chips (Hynix HY5PS121621CFP, 32Mb x 16) into the TS-109Pro II. The NAS has a total of 256 megabytes of system memory.
The NAS’s boot-loader and OS core are stored in an Intel JS28F640 flash memory chip (8MB, 75ns access time). The PCB has a seat for a flash memory chip of a larger capacity.
The LAN port is based on a popular Marvell 88E1118 chip that is often installed not only in NASes but also on mainboards.
The NAS’s three USB ports are all based on a GL850G chip from Genesys Logic. As a matter of fact, this chip supports up to four USB ports.
Home NASes usually have a very cheap microcontroller for the control and indication system. Here, it is one of the most widespread chips, PIC16F627A from Microchip Technology.
The PCB has a few seats for connectors one of which is actually a pin-connector. It is the processor’s UART. The other seats may be used to install a JTAG connector, a processor interface (GPIO), and a connector for in-circuit programming (PIC):
There is also a seat for a mini-PCI slot on the PCB.