參數(shù)資料
型號(hào)： FDC37C665GT
廠商： STANDARD MICROSYSTEMS CORP
元件分類： 存儲(chǔ)控制器/管理單元
英文描述： High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controllers
中文描述： 1 Mbps, IDE COMPATIBLE, FLOPPY DISK DRIVE CONTROLLER, PQFP100
封裝： QFP-100
文件頁數(shù)： 64/162頁
文件大?。?/td> 562K
代理商： FDC37C665GT
64
Format A Track
The Format command allows an entire track to
be formatted. After a pulse from the IDX pin is
detected, the FDC starts writing data on the disk
including gaps, address marks, ID fields, and
data fields per the IBM System 34 or 3740
format (MFM or FM respectively). The particular
values that will be written to the gap and data
field are controlled by the values programmed
into N, SC, GPL, and D which are specified by
the host during the command phase. The data
field of the sector is filled with the data byte
specified by D. The ID field for each sector is
supplied by the host; that is, four data bytes per
sector are needed by the FDC for C, H, R, and
N (cylinder, head, sector number and sector size
respectively).
After formatting each sector, the host must send
new values for C, H, R and N to the FDC for the
next sector on the track. The R value (sector
number) is the only value that must be changed
by the host after each sector is formatted. This
allows
the
disk
to
nonsequential sector addresses (interleaving).
This incrementing and formatting continues for
the whole track until the FDC encounters a pulse
on the IDX pin again and it terminates the
command.
be
formatted
with
Table 28 contains typical values for gap fields
which are dependent upon the size of the sector
and the number of sectors on each track. Actual
values can vary due to drive electronics.
FORMAT FIELDS
SYSTEM 34 (DOUBLE DENSITY) FORMAT
GAP4a
80x
4E
SYNC
12x
00
IAM
GAP1
50x
4E
SYNC
12x
00
IDAM
C
Y
L
H
D
S
E
C
N
O
C
R
C
GAP2
22x
4E
SYNC
12x
00
DATA
AM
DATA
C
R
C
GAP3
GAP 4b
3x
C2
FC
3x
A1
FE
3x
A1
FB
F8
SYSTEM 3740 (SINGLE DENSITY) FORMAT
GAP4a
40x
FF
SYNC
6x
00
IAM
GAP1
26x
FF
SYNC
6x
00
IDAM
C
Y
L
H
D
S
E
C
N
O
C
R
C
GAP2
11x
FF
SYNC
6x
00
DATA
AM
DATA
C
R
C
GAP3
GAP 4b
FC
FE
FB or
F8
PERPENDICULAR FORMAT
GAP4a
80x
4E
SYNC
12x
00
IAM
GAP1
50x
4E
SYNC
12x
00
IDAM
C
Y
L
H
D
S
E
C
N
O
C
R
C
GAP2
41x
4E
SYNC
12x
00
DATA
AM
DATA
C
R
C
GAP3
GAP 4b
3x
C2
FC
3x
A1
FE
3x
A1
FB
F8
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
FDC37C665GT_07 制造商:SMSC 制造商全稱:SMSC 功能描述:High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controllers
FDC37C665GT-MS 功能描述:輸入/輸出控制器接口集成電路 Super I/O Controller- Pb Free RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray
FDC37C665GTQFP 功能描述:輸入/輸出控制器接口集成電路 Super I/O Controller RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray
FDC37C665IR 制造商:SMSC 制造商全稱:SMSC 功能描述:3/5 Volt Advanced High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controller with Infranred Support
FDC37C665IRQFP 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:SMSC 功能描述:
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