TMS320DM355 datasheet(30/153 Pages) TI

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2.4.8

Audio Interfaces

2.4.9

UART Interface

TMS320DM355

Digital Media System-on-Chip (DMSoC)

SPRS463 – SEPTEMBER 2007

The DM355 includes two Audio Serial Ports (ASP ports), which are backward compatible with other TI

ASP serial ports and provide I2S audio interface. One interface is multiplexed with GIO signals.

Table 2-14. ASP Terminal Functions

TERMINAL

TYPE(1)

OTHER(2)(3)

DESCRIPTION

NAME

NO.

ASP0_CL

ASP0: Receive Clock

KR/

F17

I/O/Z

VDD

GIO: GIO[026]

GIO26

ASP0_CL

ASP0: Transmit Clock

KX /

F18

I/O/Z

VDD

GIO: GIO[029]

GIO029

ASP0_DR

ASP0: Receive DataF

E18

I/O/Z

VDD

GIO: GIO[027]

GIO027

ASP0_DX

ASP0: Transmit Data

H15

I/O/Z

VDD

GIO: GIO[030]

GIO030

ASP0_FS

ASP0: Receive Frame Synch

R /

F16

I/O/Z

VDD

GIO: GIO[025]

GIO025

ASP0_FS

X /

G17

I/O/Z

VDD

ASP0: Transmit Frame SynchGIO: GIO[028]

GIO028

ASP1_CL

D18

I/O/Z

VDD

ASP1: Receive Clock

ASP1_CL

D17

I/Z

VDD

ASP1: Master Clock

ASP1_CL

D19

I/O/Z

VDD

ASP1: Transmit Clock

ASP1_DR

C19

I/O/Z

VDD

ASP1: Receive Data

ASP1_DX

C18

I/O/Z

VDD

ASP1: Transmit Data

ASP1_FS

E17

I/O/Z

VDD

ASP1: Receive Frame Synch

ASP1_FS

E16

I/O/Z

VDD

ASP1: Transmit Frame Sync

(1)

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

(2)

Specifies the operating I/O supply voltage for each signal. See Section 5.3, Power Supplies for more detail.

(3)

PD = pull-down, PU = pull-up. (To pull up a signal to the opposite supply rail, a 1 k

Ω resistor should be used.)

The includes three UART ports. These ports are multiplexed with GIO and other signals.

Table 2-15. UART Terminal Functions

TERMINAL

TYPE(1)

OTHER(2)(3)

DESCRIPTION

NAME

NO.

UART0_RXD

U18

VDD

UART0: Receive data. Used for UART boot mode

UART0_TXD

T18

VDD

UART0: Transmit data. Used for UART boot mode

UART1_RXD

UART1: Receive data.

R15

I/O/Z

VDD

GIO013

GIO: GIO013

UART1_TXD

UART1: Transmit data.

R17

I/O/Z

VDD

GIO012

GIO: GIO012

(1)

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

(2)

Specifies the operating I/O supply voltage for each signal. See Section 5.3, Power Supplies for more detail.

(3)

PD = pull-down, PU = pull-up. (To pull up a signal to the opposite supply rail, a 1 k

Ω resistor should be used.)

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