W83627DHG-PT Nuvoton Technology Corporation of America, W83627DHG-PT Datasheet - Page 155

• Manufacturer Part Number: W83627DHG-PT
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627DHG-PT

• Pin Count: 128
• Lead Free Status / RoHS Status: Compliant

BIT
3
2
1
0
PRECOMP
DATA RATE
2
0
0
0
0
1
1
1
1
250 KB/S
300 KB/S
500 KB/S
PRECOMP 1.
PRECOMP 0.
DRATE 1.
DRATE 0.
1 MB/S
2 MB/S
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0.00 ns (disabled)
250K - 1 Mbps
Default Delays
125.00 ns
166.67 ns
208.33 ns
250.00 ns
41.67 ns
83.34 ns
W83627DHG-P/W83627DHG-PT
DEFAULT PRECOMPENSATION DELAYS
DESCRIPTION
-145-
PRECOMPENSATION DELAY
precompensation. The following tables
show the precompensation values for every
combination of these bits.
These two bits select the data rate of the
FDC and reduced write-current control.
Bits
1 0
0 0: 500 KB/S (MFM), 250 KB/S (FM),
RWC# = 1
0 1: 300 KB/S (MFM), 150 KB/S (FM),
RWC# = 0
1 0: 250 KB/S (MFM), 125 KB/S (FM),
RWC# = 0
1 1: 1 MB/S (MFM), Illegal (FM), RWC# = 1
The 2 MB/S data rate for the tape drive is
only supported by setting DRATE1 and
DRATE0 to 01, as well as setting DRT1
and DRT0 (CR [F4h] and CR [F5h] for
logical device 0) to 10. Please see the
functional description of CR [F4h] or CR
[F5h] and the data rate table for individual
data-rate settings.
41.67ns
20.8 ns
125 ns
125 ns
125 ns
Publication Release Date: July 09, 2009
2 Mbps Tape drive
0.00 ns (disabled)
Default Delays
125.00 ns
41.17 ns
104.2 ns
20.8 ns
83.3 ns
62.5ns
Version 1.94