White Electronic Designs
BLOCK DIAGRAM
Device Pair (N/2 - 1)
Device (N-1)
Device (N-2)
PCMCIA Flash Memory Card
FLV Series
CSn
Array
Address
Bus
ADDRESS
BUFFER
ADDRESS BUS
A
1
-A
25
Control
Address
Bus
M Res
WL
RL
WH
RH
CSn
Device 3
Device 2
CS
1
CS0
Control Logic
PCMCIA Interface
WE
OE
CE
2
CE
1
Cn
C0
Ctrl
REG
A
0
WP
Device Pair 1
At/Reg enable
SR Clr
Reg Clr
SR
PD
Card
Management
Registers
Device Pair 0
Device 1
Device 0
CS
0
4000h
Vcc
WH
RH
DATA
BUS
Q
8
-Q
15
DATA
BUS
Q
0
-Q
7
WL
RL
0000h
attrib. mem
CIS
EEPROM 2kB
Vcc
control
Q
0
-Q
7
Vcc
I/O buffer
Device type
28F008SC
28F016SC
Manuf ID
89
H
89
H
Device ID
A6
H
AA
H
DATA
BUS
D
8
-D
1 5
DATA
BUS
D
0
-D
7
REGISTERS IN ATTRIBUTE MEMORY SPACE*
ADDRESS
4100h
4002h
4000h
REGISTER NAME
Status Register
Config. and Status Register
Configuration Option Register
CSR
C
ONFIGURATION
S
TATUS
R
EGISTER
: ADRS = 4002h W
RITE
O
NLY
Not Supported
D7
D2
D6
D5
D4
D3
PDwn
D2
Not Supported
D1
D0
* FLV51- FLV58 and cards without Attribute
Memory do not have registers.
Power Down, active High
1 = Place all memory devices in power down mode
0 = Normal Operation
Power On default = 0
COR
SR
LREQ
D6
D5
D4
Configuration Index
D3
D2
D1
D0
C
ONFIGURATION
O
PTION
R
EGISTER
: ADRS = 4000h W
RITE
O
NLY
SRES
D7
D7
S
TATUS
R
EGISTER
: ADRS = 4100h R
EAD
O
NLY
Not Supported
D7
D5
D6
SReset
D5
D4
PDwn
D3
Not Supported R/BSY
D2
D1
D0
D6
D5-D0
Soft Reset, active High
1 = Reset State
0 = End Reset State
Level Req (not supported)
Configuration index (not supported)
D3
D0
Represents the state of SRESET bit in COR (4000h)
1 = Reset
0 = Normal Operation
Power On default D5 = 0
Represents the state of Power Down bit (D2) in CSR (4002h)
1 = Power Down
Reflects the card's Ready/Busy signal (pin 16) driven by
memory components Ready/Busy outputs. This bit allows
software polling of the card's Ready/Busy status.
1 = Ready
White Electronic Designs Corporation Marlborough, MA (508) 485-4000
2
WEDC [ WHITE ELECTRONIC DESIGNS CORPORATION ]
