ISD-200 Datasheet, PDF (16/64 Pages) List of Unclassifed Manufacturers – USB Mass Storage Class Bulk-Only Specification Compliant

ISD-200 ASIC Datasheet
Address
Field Name
Description
0x05
0x06
0x07
Reserved – Bits [7:6]
Master/Slave Selection
– Bit [5]
ATAPI DEVICE
RESET – Bit [4]
ATA Timing – Bits
[3:0]
ATA Command
Designator (Byte 0,
LSB)
ATA Command
Designator (Byte 1,
MSB)
Reserved; set to ‘0’
This bit specifies device number selection.
“0” - Drive 0
“1” - Drive 1
This bit specifies that the ISD-200 perform a ATAPI DEVICE RESET
command during a full initialization sequence.
This field determines ATA Bus data access cycle times.
0000
reserved
0001
Mode 2 (292 ns)
0010
Mode 2 (333 ns)
0011
Mode 2 (375 ns)
0100
Mode 1 (458 ns)
0101
Mode 1 (500 ns)
0110
Mode 1 (542 ns)
0111
Mode 1 (583 ns)
1000
Mode 0 (625 ns)
1001
Mode 0 (666 ns)
1010
Mode 0 (708 ns)
1011
Mode 0 (750 ns)
1100
reserved
1101
reserved
1110
reserved
1111
reserved
POR configuration default of 0x0B
This field specifies the value in CBWCB field that designates if the CB is
decoded as ATA commands instead of the ATAPI command block.
POR configuration default of 0x00
This field specifies the value in CBWCB field that designates if the CB is
decoded as ATA commands instead of the ATAPI command block.
POR configuration default of 0x00
On-board
Defaults
0x01
0x24
0x24
14
In-System Design Confidential