SST55LD019A Silicon Storage Technology, Inc., SST55LD019A Datasheet - Page 46

• Manufacturer Part Number: SST55LD019A
• Description: Ata Flash Disk Controllersst's Ata Flash Disk Controller is The Heart of a High Performance, Flash Media-based Data Storage System. The Ata Flash Disk Controller Recognizes The Control, Address, And Data Signals on The Ata/ide Bus And Translates Them
• Manufacturer: Silicon Storage Technology, Inc.

Advance Information
©2004 Silicon Storage Technology, Inc.
Features 01H and 81H are used to enable and clear 8-bit data transfer mode. If the 01H feature
command is issued all data transfers will occur on the low order D
signal will not be asserted for data register accesses.
Features 02H and 82H allow the host to enable or disable write cache in the ATA Flash Disk Controllers
that implement write cache. When the subcommand Disable-Write-Cache is issued, the ATA Flash Disk
Controller should initiate the sequence to flush cache to non-volatile memory before command
completion.
Feature 03H allows the host to select the transfer mode by specifying a value in the Sector Count
register. The upper 5 bits define the type of transfer and the low order 3 bits encode the mode value.
One PIO mode is selected at all times. The host may change the selected modes by the Set-Features
command.
Feature 05H allows the host to enable advanced power management. To enable advanced power
management, the host writes the Sector Count register with the desired advanced power management
level and then executes a Set-Features command with subcommand code 05H. The power
management level is a scale from the lowest power consumption setting of 01H to the maximum
performance level of FEH. Table 11-10 shows these values.
TABLE11-10: A
Level
Maximum performance
Intermediate power management levels without standby
Minimum power consumption without standby
Intermediate power management levels with standby
Minimum power consumption with standby
Reserved
Reserved
DVANCED
P
OWER
M
ANAGEMENT
SST55LD019A / SST55LD019B / SST55LD019C
46
L
EVELS
ATA Flash Disk Controller
7
-D
0
data bus and the IOCS16#
Sector Count Value
81H-FDH
02H-7FH
S71241-02-000
FEH
FFH
80H
01H
00H
T11-10.0 1241
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