W83627EHG Nuvoton Technology Corporation of America, W83627EHG Datasheet - Page 149
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W83627EHG
Manufacturer Part Number
W83627EHG
Description
IC I/O CONTROLLER 128-QFP
Manufacturer
Nuvoton Technology Corporation of America
Specifications of W83627EHG
Applications
PC's, PDA's
Interface
LPC
Voltage - Supply
3.3V
Package / Case
128-XFQFN
Mounting Type
Surface Mount
Pin Count
128
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
W83627EHG
Manufacturer:
WINBOND/华邦
Quantity:
20 000
Part Number:
W83627EHG-A
Manufacturer:
WINBOND/华邦
Quantity:
20 000
Company:
Part Number:
W83627EHG-C
Manufacturer:
Winbond
Quantity:
1 000
Company:
Part Number:
W83627EHG-UB5885009AH-H VERSION
Manufacturer:
Nuvoton Technology Corporation of America
Quantity:
10 000
- Current page: 149 of 287
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The Data Rate Register is used to set the transfer rate and write precompensation. However, in PC-AT
and PS/2 Model 30 and PS/2 modes, the data rate is controlled by the CC register, not by the DR
register. As a result, the real data rate is determined by the most recent write to either the DR or CC
register. The bit definitions for this register are as follows:
S/W RESET (Bit 7):
This bit is the software reset bit.
POWER-DOWN (Bit 6):
0
1
PRECOMP2 PRECOMP1 PRECOMP0 (Bit 4, 3, 2):
These three bits select the value of write precompensation. The following tables show the
precompensation values for every combination of these bits.
2
0
0
0
0
1
1
FDC in normal mode
FDC in power-down mode
PRECOMP
1
0
0
1
1
0
0
0
0
1
0
1
0
1
7
6
5
0
250K - 1 Mbps
Default Delays
4
125.00 ns
166.67 ns
208.33 ns
41.67 ns
83.34 ns
3
W83627EHF/EF, W83627EHG/EG
- 138 -
2
PRECOMPENSATION DELAY
1
0
DRATE0
DRATE1
PRECOMP0
PRECOMP1
PRECOMP2
POWER DOWN
S/W RESET
2 Mbps Tape drive
Default Delays
41.17 ns
104.2 ns
20.8 ns
83.3 ns
62.5ns
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