TUSB9260

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SLLS962A – DECEMBER 2009 – REVISED JULY 2010

Table 5-4. USB Interface Signals

TERMINAL

I/O

DESCRIPTION

PIN

NAME

NO.

USB_SSTXP

43

O

USB SuperSpeed transmitter differential pair (positive)

USB_SSTXM

42

O

USB SuperSpeed transmitter differential pair (negative)

USB_SSRXP

46

I

USB SuperSpeed receiver differential pair (positive)

USB_SSRXM

45

I

USB SuperSpeed receiver differential pair (negative)

USB_DP

36

I/O

USB High-speed differential transceiver (positive)

USB_DM

35

I/O

USB High-speed differential transceiver (negative)

USB_VBUS

33

I

USB bus power

USB_R1

39

O

Precision resistor reference. A 10-k

Ω ±1% resistor should be connected between R1 and R1RTN.

USB_R1RTN

40

I

Precision resistor reference return

Table 5-5. Serial Peripheral Interface (SPI) Signals

TERMINAL

I/O

DESCRIPTION

PAP

NAME

NO.

O

SPI_SCLK

17

SPI clock

PU

O

SPI_DATA_OUT

18

SPI master data out

PU

I

SPI_DATA_IN

20

SPI master data in

PU

O

SPI_CS0

21

Primary SPI chip select for Flash RAM

PU

SPI_CS2/

I/O

SPCI chip select for additional peripherals. When not used for SPI chip select this pin may be

23

PU

used as general purpose I/O.

GPIO11

SPI_CS1/

I/O

SPCI chip select for additional peripherals. When not used for SPI chip select this pin may be

22

PU

used as general purpose I/O.

GPIO10

Copyright © 2009–2010, Texas Instruments Incorporated

SIGNAL DESCRIPTIONS

13

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