eKF5250
USB full speed NAND flash controller
Preliminary
5. Pin Description
Name
I/O type Description
Note
Power and ground pin
Power supply
Ground
Vbus
GND
V3.3
-
-
O
3.3V output voltage
USB analog signal
DP
I/O USB plus data line interface
DM
I/O USB minus data line interface
V3.3SW
O
1.5Kohm pull high terminal
NAND Flash interface signal
NF_CEn0
NF_CEn1
NF_CEn2
NF_CEn3
I/O Chip enable for NAND Flash 0
I/O Chip enable for NAND Flash 1
I/O Chip enable for NAND Flash 2
I/O Chip enable for NAND Flash 3
I/O Data input/output for NAND Flash
I/O7
I/O7
I/O7
I/O7
NF_D7~0
NF_WEn
NF_REn
NF_ALE
I/O7
O9
O9
O
O
O
Write enable for NAND Flash
Read enable for NAND Flash
Address latch enable for NAND Flash
O8
NF_CLE
NF_RnB
O
I
Command latch enable for NAND Flash
NAND Flash Ready or Busy
O8
I-U5
MISC
OSCI
OSCO
LED
I
O
O
Crystal input terminal or external clock input
Output terminal for crystal osc. or external clock
LED sink pin
O10
WPS
TEST
I
I
Write protect switch
TEST Pin
I-U50
I-L10
This specification may change without further notice.
02, 12, 2003
4
ELAN [ ELAN MICROELECTRONICS CORP ]
