USB2251-NU-05 Standard Microsystems (SMSC), USB2251-NU-05 Datasheet - Page 9

• Manufacturer Part Number: USB2251-NU-05
• Description: ULTRA FAST USB 2.0 MULTI-SLOT FLASH MEDI
• Manufacturer: Standard Microsystems (SMSC)

Specifications of USB2251-NU-05

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Ultra Fast USB 2.0 Multi-Slot Flash Media Controller
Datasheet
Chapter 4 Block Diagram
SMSC USB2250/50i/51/51i
VDD18PLL
24 MHz
Crystal
Host
USB
VDD18
3.3 V
3.3 V
Generation and
1.8 V Reg
USB2250 / USB2251
1.8 V Reg
PHY
Control
PLL
Clock
10 KB
64 KB
ROM
RAM
CTL
SIE
ADDR
MAP
INTFC
BUS
Figure 4.1 USB2250/50i/51/51i Block Diagram
XDATA BRIDGE
+ BUS ARBITER
PROCESSOR
8051
DATASHEET
Program Memory I/O Bus
INTFC
INTFC
BUS
AUTO_CBW
BUS
9
PROC
FMDU
CTL
EP0 RX
EP1 RX
EP1 TX
EP2 RX
EP2 TX
EP0 TX
RAM
SFR
RAM
FMI
PWR_FET1
PWR_FET2
PWR_FET3
PWR_FET0
total
GPIOs
4K
GPIO (16)
MMC
MS
SM
SD/
CF/
11 pins
Revision 2.0 (09-29-09)
GPIO10 / CRD_PWR2
GPIO11 / CRD_PWR3
GPIO8 / CRD_PWR0
GPIO9 / CRD_PWR1