eKF5280
USB2.0 Flash Controller
6 Pin Descriptions
Pin Name
I/O Type
Description
Remarks
Power and Ground Pin
VBUS
-
-
-
-
-
-
-
-
USB bus power
5.0V
3.3V
-
VCCA
Internal regulator output for analog supply voltage
Analog ground
GNDA
VCCKB
GNDKB
VCCIO
VCC25
VCC33
Internal regulator output for transceiver digital core
Digital ground
2.5V
-
Internal regulator output for I/O port
Internal regulator output for digital core
Internal regulator output
3.3V
2.5V
3.3V
USB Analog Signal
DP
I/O
I/O
USB plus data line interface
USB minus data line interface
-
-
DM
USB1.1 data in data positive pin terminal,
connected to external resistor(39Ω±5%)
USB1.1 data in data negative pin terminal,
connected to external resistor (39Ω±5%)
DPRS
I
-
DMRS
RPU
I
I
I
-
-
-
Connect external resistor (1.5KΩ±5%) to AVCC
Connect external reference resistor (12.1 KΩ±1%)
to analog ground(GNDA)
RREF
NAND Flash Interface Signal
Chip enable for NAND Flash
NAND Flash Ready or Busy
NF_CEn0~7
NF_RnB
NF_REn
NF_CLE
NF_ALE
NF_WEn
NF_WPn
NF_D0~7
I/O
I
I/O8
I/O-U5
I/O12
I/O12
I/O12
I/O12
I/O8
O
O
O
O
O
I/O
Read enable for NAND Flash
Command latch enable for NAND Flash
Address latch enable for NAND Flash
Write enable for NAND Flash
Write protect for NAND Flash
Data input/output for NAND Flash
Miscellaneous
I/O12
LED
O
I
LED sink pin
I/O10
OSCI
OSCO
WPS
Crystal input terminal or external clock input
Output terminal for crystal oscillator or external clock
Write protect switch
-
-
O
I
I/O-U50
I/O-L
I-S
TEST
RESET
I
TEST Pin
I
Reset Pin (2nd reset source in case of POR failure)
4 •
Product Specification (V1.0) 02.23.2006
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
