ISD-200 ETC2 [List of Unclassifed Manufacturers], ISD-200 Datasheet - Page 31

• Manufacturer Part Number: ISD-200
• Description: USB Mass Storage Class Bulk-Only Specification Compliant
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

ISD-200 ASIC Datasheet
assert ATA_NRESET for 50 ms
Write Device Control with 00h
no
deassert ATA_NRESET
BSY=0 & DRQ=0 OR
Attempt ECh (page 2)
BSY=0 & DRQ=1
and wait for 3 ms
BSY=0 & DRQ=0
Reset Recovery
SRST_ENABLE
Master
Init Timeout OR
Poll ALT_STAT
Reset Device
wait for 3 ms
Master/Slave
SKIP_BOOT
no
no
do_init
yes
Slave
yes
yes
flow diagram
INITIALIZE
Initialized
Initialization timeout OR
Device
(pg 2)
BSY=0 & DRQ=1
In-System Design Confidential
no
Write Device Control with 04h
Write Device Control with 00h
Write Device Head with
"101"&DEV&"0000"
and wait for 500 ns
BSY=DRQ=0 OR
Poll ALT_STAT
BSY=0 & DRQ=0 OR
50ms Timeout
BSY=0 & DRQ=1
and wait for 3 ms
and wait for 3 ms
Init Timeout OR
ALT_STAT
reset retry
Poll
yes
Init Timeout OR
BSY=DRQ=0
page 1 of 2
no
DRQ=1
BSY=0
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