WED7G257ATA33XDC25 [MICROSEMI]
Flash Module, 128MX16, SODIMM-144;
| 型号： | WED7G257ATA33XDC25 |
| 厂家： | 
Microsemi |
| 描述： | Flash Module, 128MX16, SODIMM-144 内存集成电路 |
| 文件： | 总4页 (文件大小：108K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
WED7GxxxATA33
White Electronic Designs
*PRELIMINARY
DimmDrive Solid State ATA Flash Module
FEATURES
DESCRIPTION
n 144 Pin SO-DIMM, JEDEC package
n Plug-and-play solid state disk
n NAND Flash memory technology by SanDisk
n PC CARD ATA compatible - memory mapped or I/O operation
n 3)3 volt & 5)0 volt power supply operation
n 16MB - 768MB memory density
- (1GB - Q3/02ꢀ
The DimmDrive WED7GxxxATA33 is a high performance single
chip flash disk module available in 144 Pin SO-DIMM package)
The module is based on SanDisk NAND Flash technology and
utilizes the 128Mb, 256Mb, 512Mb or 1Gb memory components
to provide the maximum in module density)
TheDimmDriveWED7GxxxATA33utilizesaSanDiskFlashChipSet
controller which is designed specifically for use as a Flash mass
storage controller for the SanDisk memory devices) This inter-
face allows a host computer to issue commands to read or write
blocks of memory in the Flash memory array) The intelligence to
manage the interface protocols, data storage and retrieval as well
as ECC, defect handling and diagnostics are controlled by this
device) Automatic power management and clock control is
handled by the controller as well)
n Low Power Consumption
n ECC error correction
n Supports true IDE mode
n 8Kbyte data buffers
n Broad O/S support: DOS, Linux, Windows 3)X, Windows 95,
Windows NT4)0/5)0, Windows CE, others
The DimmDrive WED7GxxxATA33 module will have the same
functionality and capabilities of an intelligent ATA (IDEꢀ disk
drive) An advantage of the on board Flash controller and it's ATA
command set, is the ease of software development by the user)
Once the device has been configured by the user, it appears to the
host as a standard ATA disk drive) Additional ATA commands
have been provided to enhance the system performance)
n Compatible with major processors: x86, Media GX, PowerPC,
68K, MIPS, SHx, StrongArm, others
n Full Hard Disk emulation and Boot capability
n Easy to use interface, JEDEC standard
n Supports power down commands and sleep modes
n Commercial temperature range 0C + 70C
n Industrial temperature range -40C +85C
The on-board controller is a highly integrated solution and the
controller is designed to handle all intelligent operations, even the
rare cases when new defects arise and need to be mapped out or
replaced by a spare) The hardware performs the complicated
task of ECC detection and correction and will return good data to
the host) The controller manages all defects and errors and
makes the Flash memory appear as perfect memory to the host)
MODULE APPLICATIONS
Embedded systems
Internet Access Devices
Set Top Boxes
The DimmDrive WED7GxxxATA33 module also provides a more
cost effective solution to the traditional hard disk media) The
module is perfect for applications requiring upgradeability to
higher densities and for those applications with limited space
availability and power consumption requirements)
WEB Browser
Routers, Networking
WEB phones, car PC, DVD, HPC
Point-of-sale
Medical and Telecom
Unlike standard IDE drives, no cables or extra space is required)
The module has no moving parts providing significant reduction
in power consumption and increasing reliability) Simply insert the
module into a standard 144 Pin SO-DIMM socket and you then
have a bootable flash disk)
Other applications requiring embedded or solid state storage
*
This datasheet is preliminary, therefore all specifications are subject to change
without noticeꢀ
The DimmDrive WED7GxxxATA33 is available with memory
densities of 16MB to 768MB today with 1GB density available in
Q3/02)
1
White Electronic Designs Corporation • (508) 366-5151 • www.whiteedc.com
July 2002 Revꢀ 0
ECO #15433
WED7GxxxATA33
White Electronic Designs
MODULE PINOUT
PIN SIGNAL NOTE PIN SIGNAL NOTE PIN SIGNAL NOTE
PIN SIGNAL NOTE
1
2
3
4
5
6
7
8
9
V
V
SS
SS
37
38 Reserved
39 DQ9
40 Reserved
41 DQ10
42 Reserved
43 DQ11
44 Reserved
DQ8
1
1
1
1
73
74
75
76
OE\
IO16
109
110
111
A0
NC
A10
2
3
DQ0
Reserved
DQ1
Reserved
DQ2
V
V
SS
SS
4
112 Reserved
113
114
115 Reserved
116 Reserved
117 Reserved
118 Reserved
119
120
121 Reserved
122 Reserved
123 Reserved
124 Reserved
125 Reserved
126 Reserved
127 Reserved
128 Reserved
77 Reserved
78 Reserved
79 Reserved
80 Reserved
81
82
83 Reserved
84 Reserved
85 Reserved
86 Reserved
87 Reserved
88 Reserved
89 Reserved
90 Reserved
V
V
CC
CC
Reserved
DQ3
45
46
47
V
V
DQ12
CC
V
V
CC
CC
10 Reserved
CC
11
12
13
V
V
CC
CC
1
1
1
1
V
V
SS
SS
48 Reserved
49 DQ13
50 Reserved
51 DQ14
52 Reserved
53 DQ15
54 Reserved
DQ4
14 Reserved
15 DQ5
16 Reserved
17 DQ6
18 Reserved
19 DQ7
20 Reserved
55
56
V
V
SS
SS
91
92
V
V
SS
SS
21
22
23
V
V
CE0\
SS
SS
57 Reserved
58 Reserved
93 Reserved
94 Reserved
95 Reserved
96 Reserved
97 Reserved
98 Reserved
99 Reserved
100 Reserved
129
130
V
V
CC
CC
59
60
61
62
63
64
65
66
67
68
Busy
NC
BVD1
BVD2
4
131 Reserved
132 Reserved
133 Reserved
134 Reserved
135 Reserved
136 Reserved
137 Reserved
138 Reserved
24 Reserved
25 CE1\
26 Reserved
1
3
3
27
28
29
30
31
32
33
34
35
36
V
V
CC
V
V
CC
CC
CC
A0
A3
A1
A4
A2
A5
RST
IOWR
WE\
4
3
101
102
103
104
105
106
107
108
V
V
A6
A7
A8
NC
CC
CC
2
2
2
139
140
V
V
SS
2
2
IORD
3
3
3
SS
69 Reserved
70 REG
71 Reserved
72 INPACK
141 Reserved
142 Reserved
143
144
V
V
SS
SS
V
V
SS
V
V
CC
CC
SS
Note: 1ꢀ) 16-Bit bus mode signals not used (floating) in 9-bit mode
CE1\ signal in 16-bit only mode should be tied to CE0\
2ꢀ) Optoinal addresses, do not have to be connected for module use in Memory Mapped Mode
3ꢀ) Optional test signals not used in Memory Mapped Mode
4ꢀ) Busy, RST and A10 signals are optional in Memory Mapped Mode
NC - pins internally not connected
White Electronic Designs Corporation • Westborough MA • (508) 366-5151
2
WED7GxxxATA33
White Electronic Designs
SIGNAL DESCRIPTION
Signal Name
Description
DQ0-DQ7, DQ8-DQ15
CE0\, CE1\
Data bus can either be 8-bits or 16-bits wide depending on selection of CE0\ and CE1\
CE1\ always selects the odd byte of the wordꢀ CE0\ accesses the even or odd byte depending on A0 and CE1\ꢀ For 8-bit
systems, CE0 is used and for 16-bit systems, both CE0\ and CE1\ are usedꢀ Both CE0\ and CE1\ should be decoded by the
logic to determine the memory windowꢀ
OE\
This is an output enable strobe generated by the host interfaceꢀ It is used to read data from the Flash ChipSet in Memory Mode
and to read the CIS and configuration registers
WE\
The write enable pin is driven by the host and used for strobing data to the registers of the Flash ChipSet when the Flash
ChipSet is configured in the memory interface modeꢀ It is also used for writing the configuration registersꢀ
A0-A10
Busy
A0-A3 selects the basic registers of the controller to communicate to the moduleꢀ This requires 16 bytes of host address spaceꢀ
A0 is optional if CE0\ and CE1\ are combined to enable 16-bit wide register accessꢀ
The Busy signal is driven low when the product is accessing memoryꢀ When Busy is high, register access is allowedꢀ After a
data transfer command is issued, this signal is used to signify that the host can transfer dataꢀ
RST
BVD1
When RST is high, the product is placed in a reset modeꢀ This signal is only valid at power onꢀ
This signal is driven high since a battery is not used with this product
BVD2This
output
line
is
always
IOWR
IORD
REG
This signal is not used in the memory modeꢀ
This signal is not used in the memory modeꢀ
This signal is used during Memory Cycles to distinguish between common memory and register memory accessesꢀ High for
common memory, low for attribute memoryꢀ
INPACK
IO16
Reserved
VCC
VSS
NC
This signal is not used in the memory modeꢀ
Optional test signals not used in the Memory Mapped Modeꢀ
Pins are reserved for future expansion and must be left floatingꢀ
Power pinsꢀ All VCC pins must be connectedꢀ
Ground pinsꢀ All VSS pins must be connectedꢀ
No connectꢀ Pin internally not connectedꢀ
BLOCK DIAGRAM
A0 - A10
6
CE0
n
2
1
D0 - D7
Data
SanDisk
Controller
Control
NAND
Flash
D8 - D15
CE1
Control signals used
in other modes (see
pin list)
3
White Electronic Designs Corporation • (508) 366-5151 • www.whiteedc.com
WED7GxxxATA33
White Electronic Designs
PACKAGE
ALL DIMENSIONS ARE IN INCHES
White Electronic Designs Corporation • Westborough MA • (508) 366-5151
4
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