Texas-instruments Digital Signal Processor SM320F2812-HT Manual de usuario descargar pdf (Pagina 24)

SM320F2812-HT

SGUS062B–JUNE 2009 – REVISED JUNE 2011

www.ti.com

Signal Descriptions (Continued)

(1)

(continued)

PIN NO.

PERIPHERAL DIE PAD DIE PAD

GPIO DIE PAD NO. I/O/Z

(2)

PU/PD

(3)

DESCRIPTION

172-PIN

SIGNAL X-CENTER Y-CENTER

HFG

GPIOF OR CAN SIGNALS

GPIO or eCAN

GPIOF6 CANTXA (O) 85 99 5361.5 4758.0 I/O/Z PU

transmit data

GPIO or eCAN

GPIOF7 CANRXA (I) 87 101 5192.7 5057.5 I/O/Z PU

receive data

GPIOF OR McBSP SIGNALS

GPIO or transmit

GPIOF8 MCLKXA (I/O) 27 34 3461.4 42.6 I/O/Z PU

clock

GPIO or receive

GPIOF9 MCLKRA (I/O) 24 31 3146.8 42.6 I/O/Z PU

clock

GPIO or transmit

GPIOF10 MFSXA (I/O) 25 32 3242.2 42.6 I/O/Z PU

frame synch

GPIO or receive

GPIOF11 MFSRA (I/O) 28 35 3556.7 42.6 I/O/Z PU

frame synch

GPIO or transmitted

GPIOF12 MDXA (O) 21 28 2832.3 42.6 I/O/Z –

serial data

GPIO or received

GPIOF13 MDRA (I) 19 26 2613.0 42.6 I/O/Z PU

serial data

GPIOF OR XF CPU OUTPUT SIGNAL

This pin has three

functions:

1. XF –

General-purpose

output pin.

2. XPLLDIS – This

pin is sampled

during reset to check

if the PLL needs to

GPIOF14 XF_XPLLDIS (O) 137 153 42.6 4153.3 I/O/Z PU

be disabled. The

PLL will be disabled

if this pin is sensed

low. HALT and

STANDBY modes

cannot be used

when the PLL is

disabled.

3. GPIO – GPIO

function

GPIOG OR SCI-B SIGNALS

GPIO or SCI

GPIOG4 SCITXDB (O) 88 102 5098.0 5057.5 I/O/Z – asynchronous serial

port transmit data

GPIO or SCI

GPIOG5 SCIRXDB (I) 89 103 5003.3 5057.5 I/O/Z – asynchronous serial

port receive data

xxx

NOTE

Other than the power supply pins, no pin should be driven before the 3.3-V rail has reached

recommended operating conditions.

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