ATA20 White Electronic Designs Corporation, ATA20 Datasheet - Page 15
ATA20
Manufacturer Part Number
ATA20
Description
Density = 8MB-160MB ;; Memory Device = Hitachi Flash ;; Organization = X16/x8 ;; Speed (ns) = 250 ;; Volt = 3/5 ;;
Manufacturer
White Electronic Designs Corporation
Datasheet
1.ATA20.pdf
(66 pages)
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June 2000 Rev. 5 – ECO #12935
3. Pin Replacement Register (Address 204H)
This register is used for providing the signal state of the -IREQ signal when the card configured I/O card interface.
bit7
0
Note: initial value: 0CH
Name
CRDY/-BSY
(HOST->)
RRDY/-BSY
(HOST->)
4. Socket and Copy Register (Address 206H)
This register is used for identification of the card from the other cards. The host can read and write this
register. This register should be set by the host before this card's Configuration Option register set.
bit7
0
Note: initial value: 00H
Name
DRV#
(HOST->)
7PxxxATA20xxC25
bit6
0
bit6
0
R/W
R/W
R/W
R/W
R/W
Function
This bit is set to "1" when the RRDY/-BSY bit changes state. This bit may also be
written by the host.
When read, this bit indicates +READY pin states. When written, this bit is used for
CRDY/-BSY bit masking.
Function
This field is used for the configuration of the plural cards.
bit5
CRDY/-BSY 0
bit5
0
bit4
bit4
DRV#
15
bit3
1
bit3
0
White Electronic Designs Corporation (508) 366-5151
bit2
1
bit2
0
bit1
RRDY/-BSY 0
bit1
0
bit0
bit0
0
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