A
TTRIBUTE
M
EMORY
D
ESCRIPTION
AND
O
PERATION
SSD-P
XXX
(I)-3100 D
ATA
S
HEET
S
ILICON
S
YSTEMS
P
ROPRIETARY
This document and the information contained within it is confidential and proprietary to SiliconSystems, Inc.
All unauthorized use and/or reproduction is prohibited.
3100P-06DSR
P
AGE
23
F
EBRUARY
2, 2009
A
TTRIBUTE
M
EMORY
D
ESCRIPTION
AND
O
PERATION
The attribute memory plane can be read or written to by asserting the REG#
signal, qualified by the appropriate combination of CE1#, OE#, and WE#. An
attribute memory map describing the type and location of the information
maintained in the attribute memory plane is provided in
"Attribute Memory
Map" on page 25
.
With respect to SiliconDrive CF, attribute memory consists of two sections:
• Card Information Structure (CIS), which contains a description of the Card’s
capabilities and specifications.
• Function Configuration Registers (FCRs), which consists of four registers,
that can be read or written to by a host to configure the Card for specific
purposes.
A
TTRIBUTE
M
EMORY
R
EAD
O
PERATIONS
Attribute memory read operations are enabled by asserting REG#, OE#, and
CE1# low. Odd byte read operations from the attribute memory plane are not
valid.
Table 18: Attribute Memory Read Operations
Function
Mode
REG# CE1# CE2# A0
OE#
WE# D[15:8]
D[7:0]
Standby
L
H
H
X
X
X
High-Z
High-Z
Byte Access
L
L
H
L
L
H
High-Z
Even
L
H
L
H
L
H
High-Z
Not Valid
Word Access L
L
L
X
L
H
Not Valid Even
Odd Byte
Only Access
L
L
H
X
H
H
Not Valid High-Z