TUSB9261

www.ti.com

SLLSE67B

– MARCH 2011 – REVISED MAY 2011

Table 5-4. USB Interface Signals

TERMINAL

I/O

DESCRIPTION

PIN

NAME

NO.

USB_SSTXP

43

O

SuperSpeed USB transmitter differential pair (positive)

USB_SSTXM

42

O

SuperSpeed USB transmitter differential pair (negative)

USB_SSRXP

46

I

SuperSpeed USB receiver differential pair (positive)

USB_SSRXM

45

I

SuperSpeed USB 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

50

I

USB bus power

USB_R1

38

O

Precision resistor reference. A 10-k

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

USB_R1RTN

39

I

Precision resistor reference return

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

TERMINAL

I/O

DESCRIPTION

PIN

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

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

23

PU

as general purpose I/O.

GPIO11

SPI_CS1/

I/O

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

22

PU

as general purpose I/O.

GPIO10

Copyright

© 2011, Texas Instruments Incorporated

SIGNAL DESCRIPTIONS

13

Submit Documentation Feedback

Product Folder Link(s): TUSB9261