A33606-PCI-60-6A SAS-2 Expander User Manual
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Copyright © 2014 by Astek Corporation. All rights reserved
Ver. A
5
Crypto Erase Function
The A33606-PCI-60-6A comes pre-configured with a sanitization algorithm that will sanitize up to 16
drives
that have the Cryptographic Erase Functions “Key Erase” (SBC-3, Sections 5.24/2/4) and “Block
Erase” (SBC-3, Section 5.24.2.3). This Crypto Erase function uses a high-transitioning pulse on GPIO2 to
start the process and GPIO3 to sink the current for an external diode to give status of the sanitization
process.
J34
Pin
Name/Crypto Function
IO Type
Description
4
GPIO2/Switch Input
3.3V Input
When this signal is asserted for 150msec
(-0/+100 msec), the Crypto Erase
Function Starts.
8
GPIO3/LED Sink
3.3V Tolerant Open-
Drain Digital I/O. No
Pull-Up is on this pin.
Cathode of external diode is attached to
this pin. Can sink up to 8mA max and
external circuitry must current limit to
8mA.
The following table describes the blinking pattern that GPIO3 can provide by sinking current from the
cathode of an external diode that has its anode pulled to 3.3V.
Conditon
Blink Pattern
Desctiption
Crypto Erase Completed with no
errors
ON
GPIO3 is sinking up to 8mA
continuously
Crypto Erase Function in progress
BLINK
1 Hz, 50% Duty Cycle of GPIO3
transitioning between ON and
OFF
Crypto Erase Completed with an
error condition.
FAST-BLINK
½ Hz, 50% Duty Cycle of GPIO3
transitioning between ON and
OFF
No Crypto Erase function in
progress.
OFF
GPIO3 is Tri-Stated continously
