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--------~~~4~~~c--------~---------------------------------------------------------
CP4044 (40MB)
"::-::';:"-- - ,-- ".':;C::::P ::
SPECIFICATION,SUMMARY
,
p
• •
J
CAPACITY"
42.9 Mbytes Formatted
PHYSICAL CONFIGURATION
Head Type
Disk Type
Actuator Type
Nur:nberpf . . pisks" ,',
O-ata
-S~Lirtac'es:
co.: .. -:.
. Dat,d,eads, ' ,
Servo
, ' "
Tracks
per'S\.Jrtace
--_.J_:'.':,)-
. . ,
'
Track Density
_
'
I
Track Capacity Formatted
Bytes per Block
Blocks per Drive
Sectors per Track
PERFORMANCE
Seek Timesit
, f "
,
,"'
J '
MIG
Plated Thin Film
. Rot.iry· Voice-Coil
: .. :' :.,:1,
:~;
2.-
.2 .. ,
.
"Embedded'
1104
,t400TPI
.
19,456 Bytes
512
83,904
39 physical; 38 user
Track to Track: 8 rns
Average: 29 rns**
Maximum: 50 rns
Average Latency
10.3 ms
Rotation Speed (± .1
'!o)
2904 RPM
Controller Overhead
1 rns
DataTransfer Rate (To/From Media) 1.25
Data Transfer Rate (To/From Buffer) 3.75
Sta~ rime (Power, Lip)"""'!'
.
'(0:3575 RPM)!
. (0
RPM - READY)
Stop Time (Power bown)
Start/stop cYcles
Interleave'
.
.
.
typical: 5 seconds maximum: 1 0
seconds
typical: 7 seconds
m'aximum: 15 seconds
typical: 5 seconds
maximum: 10 seconds
20,000 min.
j :;
*
·At~no~inal·D
..
c: input
voltages
..
*~'
Average ~~~k' tim'e IS
'determined
'by
_dividing'
the total time
required to seek,_,betwesn aU pOssible'
9r~ered
pairs of track
addresses; by the totafnuniber of these ordered pairs.
%~u: Thes~
numbers- assu"me"iilpin\"lrecove'ry
,'is-
'ndt, invoked. If spin
reeaverY is invoked, the m,3x 'could beAD sec. Briefly removing
'. power-can lead
to
spin' recoverY t)efn{i iiwoked.
• •
' . - ; <
-28-
CP4044
READIWRITE
Interface
Task File
,2 of 7 RLL code
32,729 bits per inch
Recording Method
Recording Density'(ID)
Flux Density (ID)
2181 9 flux _reversi3,ls:
per.iD~b
POWER REQUIREMENTS
.
-~
...
TYPICAL
MAX
:>5VDC'
POWER
+5VDC
POWER
±10%
±10%
RIWMODE
750ma
3.8 W.
~ .,7.89~
rria- ::
3.9>W·'
SEEKING MODE
500 rna
2.5 W
.52 ma
2.59W
IDLE MODE
300 rna
1.5 W
.388 rna
1.94W
STANDBY MODE
130 rna
·0.65W
.188 m,a
·.94W
SLEEP MODE
70 ma
004 W
.120ma
.60W
SPIN-UP MODE
1,25 amp
~.25W
1045
amp
7.25W
NOTES: 1) READIWRITE mode occurS when data is being read
from or written to the disk.
2) SEEKING MODE occurs while the actuator is in molion.
3) IDLE MODE occurs when the drive is not reading, writ-
ing or seeking. The motor is up to speed and DRIVE
READY condition exists. Actuator is residing on last ac-
cessed track.
4) STANDBY MODE occurs when the motor is stopped,
actuator parked and all electronics except interface can·
trol is in sleep state. STANDBY MODE will occur after a
programmable timeout since last host access occurs.
Drive ready and seek complete status exist. The drive
will leave STANDBY MODE upon receipt of a command
which requires disk access o'r upon receipt of
a
spin up
command.
5) SLEEP MODE occurs when the host issued the SLEEP
command to the drive. SLEEP MODE is the same as
STANDBY MODE except that interface control is also
powered down. To exit the SLEEP MODE, the Host
Reset line on the interface must be asserted. The SRST
bit in the Digital Output Register is useful for this' pur-
pose.
'
6) Maximum noise allowed (DC
to
1 MHZ, with equivalent
resistive load): +5V DC: 20/0.
7) SPIN, UP MODE current draw is for 5 seconds max.
8} The drive"nas two, sets of jumpers E1, E2, E3, near the
interface connector of the drive and E1
Ai
E2A, on the
same board edge of the drive about midway down.
E1 jumpered to E2 connects -Host Active to an internal
port.
E2 to E3 jumpers -Host Active to 10 Channel Ready on
the SH260.
'
E1 A jumpered selects - Slave Present.
notjumpered selects single drive only.
E2Ajumj:1I3red addresses drive as drive
C.
notjumpered addresses drive as drive D.
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