Chenbro 4-Port Multilane
SATA Backplane User’s Manual
http://www.chenbro.com
2
Hardware Specification
Multilane SATA Backplane:
z An “Infiniband 4X receptacle” as host plug connector for 4 SATA channels.
z A power MOSFET to provide per disk power (5V and 12V) for each disk spin-up
control.
z A uP to control the disk spin up function if LED board enable this function, set by a
DIP switch pin, and start from the lowest position backplane. (i.e. the top one
would be the latest to spin up.
z 5 fan connectors (3 pins): each support 12V current up to 750mA (max power
consumption: 9 watts)
z A 4x3 jumper with 4-digit jumper cap is added to select either disk power or disk
activity for LED indication.
A design hook with a zero ohm resistor to conduct disk reserved pin (P11) to
disk activity LED. (It’s for the case that the pin is defined for disk LED output)
z Multiple SATA backplanes (up to 4) is cascaded by a connector to report fan, disk
and thermal signals:
1 thermal signal per SATA backplane reporting to LED module
4 disk activity (or present) signals per SATA backplane reporting to LED
module
5 fan speed signals (for all SATA backplane) reporting to LED module
z A pre-charge circuit for surge current protection when a disk is plugged in.
z 2 standard big-4P (Molex device connector) power inlets
LED Module (for 2U/3U/4U)
z 1 power button and 1 reset button
z 1 buzzer for alerting and 1 alarm mute button (controlled by uP)
z 2 standard USB 1.1/2.0 ports
z 1 connector for RPS (Redundant Power Supply) fault event detection
z 1 connector with signal controlled by uP to mute RPS built-in audio alarm
z 1 connector with I
2
C signals as a design hook to support peripheral management
interface
z 1 connector to gather fan speed, disk activity, and thermal signals from SATA/SCSI
backplane by a FFC cable
Total 16 (4x4) LEDs for disk activity signal from 4 backplane
4 thermal signal inputs from 4 backplane (detected by uP)
Total 5 fans supported
(15 pages)
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