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LOUIS

L.O.U.I.S - LOW COST USB ISDN SOLUTION

STMicroelectronics 

4 - SYNOPTIC

Figure 2 : Global Synoptic

ST5481

VREF-GEN

IREF

NRESET

S0

4

FLTPLL

15.36MHz

PLL

48MHz

15.36

CK48

VREF

TXCK_O

RXCK_O

S0 interface TXFS_O

RXFS_O

TXDATA

RXDATA

B1_W

STOP_OSC

MCLK

B2_W

D_W

NLSD

DEN

DREQ

I430

MACROCELL

NINT

SDO

SDI

SCK

NCS

TEST

B1, B2, D

FIFOS

for

isochonous

endpoints

CONTROL_DATA_OUT(7-0)

CONTROL_DATA_IN(7-0)

CHANNEL

ACCESS

and

FRAMING

Descriptor

ROM

256 bytes

USB Driver

4

USB Bus

Microwire

interface

Endpoint 1

controller

Endpoint 0

controller

TEST interface

Test pins

MODE(3-0)

USB

MACROCELL

CK48

CK12

TEST2-0

Power management and REGULATORS

RPSM 8 power pins

5/18

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