cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 507

• Manufacturer Part Number: cs5535
• Description: Geode Cs5535 Companion Multi-function South Bridge
• Manufacturer: National Semiconductor Corporation

Revision 0.8
Flash Controller Register Descriptions
5.19.1.5
MSR Address
Type
Reset Value
This register is reserved. Reads return 0. Writes have no effect.
5.19.2 Flash Controller Native Registers
5.19.2.1
Flash Memory Offset 000h-7FFh
Flash I/O Offset
Type
Reset Value
Reading or writing to this range accesses the same NAND Device Data.
10:8
Bit
6:4
2:0
Bit
7:0
7
3
7
Flash Reserved (NANDF_RSVD)
NAND Device Data (NAND_DATA)
Name
tCH
RSVD
tCP
RSVD
tCS
Name
DATA
5140001Dh
R/W
00000000h
6
00h-03h
R/W
Undefined
Description
Control Hold Time. The hold time from the rising edge of WE# to the toggle of control
signals. Note that the I/O bus is turned off when the tCH expires. Range = 0h to 7h.
Refer to Figure 4-59 "NAND Flash Command/Address Timing" on page 174.
Reserved. Reads return value written.
Control Pulse Width. The WE# active pulse width in command/address phase. Note
that the command/address byte is put on the I/O bus at the same time that the WE# is
asserted. Range = 1h to 7h. Refer to Figure 4-59 "NAND Flash Command/Address
Timing" on page 174.
Reserved. Reads return value written.
Control Setup Time. The setup time from the toggle of the control signals to the WE#
falling edge. Range = 0h to 7h. Refer to Figure 4-59 "NAND Flash Command/Address
Timing" on page 174.
Description
NAND Device Data. No default value. This address space is not to be read from until
data is read from the NAND Flash device. The system will hang if a read is done from
this address space without a prior read from NAND Flash device.
5
NANDF_CTL Bit Descriptions
NAND_DATA Bit Descriptions
NAND_DATA Register Map
4
(Continued)
DATA
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