Specifications

Main Board QSSC-S4R Technical Product Specification
40
2.3.6.1.2 DB1200 PCI Express Clock Buffer
DB1200 Version 2.0 device with PCI Express Gen2 support. It provides outputs that have low cycle-to-cycle jitter, and
low output-to-output skew. DB1200 supports one- to eight-output configuration, taking a spread or non-spread
differential HCSL input from CK410B+ main clock, or any other differential HCSL pair. DB1200 can generate HCSL or
LVDS outputs from 100 to 400MHz in PLL Mode or 33 to 400MHz in Bypass Mode. There are two de-jittering modes
available, selectable through the HIGH_BW# input pin: high bandwidth mode provides de-jittering for spread inputs and
low bandwidth mode provides extra de-jittering for non-spread inputs. SRC_IN#, PD#, and individual OE real-time input
pins provide completely programmable power management control and help minimize EMI. DB1200 is configured to
run in PLL Mode to reduce high frequency jitter on Boxboro. In Bypass Mode, the input clock is passed directly to the
output stage, resulting in 50ps of additive jitter (50ps + input jitter.) In order to enable SSC (Spread Spectrum
Clocking), Bypass Mode needs to be selected. DB1200 needs to be configured to run in Bypass Mode if multiple
DBxxx are cascaded.
2.3.7 Serial-ATA (SATA) Sub-system
ICH10R has two integrated SATA host controllers. Functionality is described in “Serial ATA (SATA) Controller” on page
34.
2.3.8 BIOS Flash Devices
The main board has a 16MB flash memory that contains the system BIOS.
2.3.9 USB 2.0 Subsystem
QSSC-S4R main board supports up to two USB Solid State Drive (SSD) modules that can dock to the baseboard via
the on-board connectors. The SSD is the standard profile 0.1" x 0.1" connector version, off the shelf existing drives.
One plastic standoff is required to mount each SSD to the baseboard. Contact Quanta field sales team if you have a
demand. Key features include:
x USB 2.0/1.1 SSD with Intel® NAND flash memory
x 1GB, 2GB and 4GB capacities available (Intel Z-U130-like version)
x Drive activity pin to drive front panel HDD activity LED
x Standard profile connector is a 2.54mm x 2.54mm 2x5pin header, example Intel Z-U130 SSD
2.3.9.1 USB 2.0 Subsystem Functional Block Diagram
Figure 5. USB 2.0 Subsystem Functional Block Diagram