TMS320VC5505 datasheet(24/135 Pages) TI

24 / 135 page

TMS320VC5505

SPRS503B – JUNE 2009 – REVISED JANUARY 2010

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Table 3-12. UART Terminal Functions

SIGNAL

TYPE(1)

OTHER(2) (3)

DESCRIPTION

NAME

NO.

UART

LCD_D[14]/

This pin is multiplexed between LCD Bridge, UART, GPIO, and I2S3.

UART_RXD/

IPD

When used by UART, it is the receive data input UART_RXD.

N13

I/O/Z

GP[30]/

DVDDIO

Mux control via the PPMODE bits in the EBSR. The IPD resistor on this pin can be

I2S3_RX

enabled or disabled via the PDINHIBR3 register.

LCD_D[15]/

This pin is multiplexed between LCD Bridge, UART, GPIO, and I2S3.

UART_TXD/

IPD

In UART mode, it is the transmit data output UART_TXD.

P14

I/O/Z

GP[31]/

DVDDIO

Mux control via the PPMODE bits in the EBSR. The IPD resistor on this pin can be

I2S3_DX

enabled or disabled via the PDINHIBR3 register.

LCD_D[13]/

This pin is multiplexed between LCD Bridge, UART, GPIO, and I2S3.

UART_CTS/

IPD

In UART mode, it is the clear to send input UART_CTS.

P13

I/O/Z

GP[29]/

DVDDIO

Mux control via the PPMODE bits in the EBSR. The IPD resistor on this pin can be

I2S3_FS

enabled or disabled via the PDINHIBR3 register.

LCD_D[12]/

This pin is multiplexed between LCD Bridge, UART, GPIO, and I2S3.

UART_RTS/

IPD

In UART mode, it is the ready to send output UART_RTS.

N12

I/O/Z

GP[28]/

DVDDIO

Mux control via the PPMODE bits in the EBSR. The IPD resistor on this pin can be

I2S3_CLK

enabled or disabled via the PDINHIBR3 register.

(1)

I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal

(2)

IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup/pulldown resistors and situations where external

pullup/pulldown resistors are required, see Section 4.8.1 , Pullup/Pulldown Resistors.

(3)

Specifies the operating I/O supply voltage for each signal

Table 3-13. USB2.0 Terminal Functions

SIGNAL

TYPE(1)

OTHER(2) (3)

DESCRIPTION

NAME

NO.

USB 2.0

12-MHz crystal oscillator input.

USB_MXI

G13

USB_VDDOSC

When the USB peripheral is not used, USB_MXI should be connected to ground

(VSS).

12-MHz crystal oscillator output.

USB_MXO

G14

USB_VDDOSC

When the USB peripheral is not used, USB_MXO should be left unconnected.

3.3-V power supply for USB oscillator.

see

USB_VDDOSC

G12

Section 5.2,

When the USB peripheral is not used, USB_VDDOSC should be connected to ground

ROC

(VSS).

see

USB_VSSOSC

F11

Section 5.2,

Ground for USB oscillator.

ROC

see

USB power detect. 5-V input that signifies that VBUS is connected.

USB_VBUS

J12

A I/O

Section 5.2,

When the USB peripheral is not used, the USB_VBUS signal should be connected

ROC

to ground (VSS).

USB_DP

H14

A I/O

USB_VDDA3P3 USB bi-directional Data Differential signal pair [positive/negative].

When the USB peripheral is not used, the USB_DP and USB_DM signals should

USB_DM

J14

A I/O

USB_VDDA3P3

both be tied to ground (VSS).

External resistor connect. Reference current output. This must be connected via a

10-k

Ω ±1% resistor to USB_VSSREF and be placed as close to the device as

possible.

USB_R1

A I/O

USB_VDDA3P3

When the USB peripheral is not used, the USB_R1 signal should be connected via

a 10-k

Ω resistor to USB_VSSREF.

(1)

I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal

(2)

IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup/pulldown resistors and situations where external

pullup/pulldown resistors are required, see Section 4.8.1 , Pullup/Pulldown Resistors.

(3)

Specifies the operating I/O supply voltage for each signal

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