Download Seagate ST506 Manual 1982

Theory of Oper ations
2.3.3
ST-506 Service Manual
Drive Selection
LINE DRIVER
to interface
Block DiagramLINE REOHVER
fran interface
Ifran
SIEP Pi.LSES
interface
I
I
DRIVE SELECf 1
DRIVE SELECT 2
DRIVE SELECf 3
DRIVE SELECf 4
I
I
1
WRITE GA1E
fran interface
I
DRIVE SELECIID
to interface
r
I
WRITE DATA
fran interface
[
A~IVIlY ~
tnternal
to interface
I
READY
to inter f ace
I
UACK _
I
SEEK <XMPlEIE
to interface
II
I
WR~1E FAU.T
to interface
I
I
IIDEX
to interface
Functlonal 0 esc I1p tlonDrive Select serves only to gate other signals to or from the drive
interface. Without Drive Select, the drive cannot read, write, or seek.
Seagate Technology
PAGE 13
5/1/82