Silicon Image SiliconDrive SSD-P16G(I)-3100 - Manual (Page 33)

A TTRIBUTE M EMORY D ESCRIPTION AND O PERATION SSD-P XXX (I)-3100 D ATA S HEET
S ILICON S YSTEMS P ROPRIETARY
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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