ADZS-21469-EZLITE【PDF 16/62 页】KIT EVAL EZ LITE ADSP-21469

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ADSP-21462/ADSP-21465/ADSP-21467/ADSP-21469

Table 7. Pin List (Continued)

State

During

SSTL1 and After

Preliminary Technical Data

Name

CLKIN

Type

I

LVTTL 8

?

Reset Description

Local Clock In. Used in conjunction with XTAL. CLKIN is the clock input.

It configures the processors to use either its internal clock generator or

an external clock source. Connecting the necessary components to

CLKIN and XTAL enables the internal clock generator. Connecting the

external clock to CLKIN while leaving XTAL unconnected configures the

processors to use the external clock source such as an external clock

oscillator. CLKIN may not be halted, changed, or operated below the

specified frequency.

CLKOUT/

RESETOUT/

RUNRSTIN

I/O (pu)

?

Clock Out/Reset Out/Running Reset In. The functionality can be

switched between the PLL output clock and reset out by setting Bit 12

of the PMCTL register. The default is reset out. This pin also has a third

function as RUNRSTIN which is enabled by setting bit 0 of the

RUNRSTCTL register. For more information, see the ADSP-2146x SHARC

Processor Hardware Reference.

MLBCLK 3

I (pd)

?

High-Z

Media Local Bus Clock. This clock is generated by the MLB controller

that is synchronized to the MOST network and provides the timing for

the entire MLB interface. 49.152 MHz at Fs=48 kHz

MLBDAT 3

I/O (pd) in 3 pin

?

High-Z

Media Local Bus Data. The MLBDAT line is driven by the transmitting

mode. Input in 5 pin

mode.

MLB device and is received by all other MLB devices including the MLB

controller. The MLBDAT line carries the actual data. In 5-pin MLB mode,

this pin will be an input only.

MLBSIG 3

I/O (pd) in 3 pin

?

High-Z

Media Local Bus Signal. This is a multiplexed signal which carries the

mode. Input in 5 pin

mode

Channel/Address generated by the MLB Controller, as well as the

Command and RxStatus bytes from MLB devices. In 5-pin mode, this pin

will be input only.

MLBDO 3

O (pd)

?

High-Z

Media Local Bus Data Output (in 5 pin mode). This pin is used only in

5-pin MLB mode. This serves as the output data pin in 5-pin mode.

MLBSO 3

O (pd)

?

High-Z

Media Local Bus Signal Output (in 5 pin mode). This pin is used only

in 5-pin MLB mode. This serves as the output signal pin in 5-pin mode.

1

2

3

Pull-up/pull-down resistor can not be enabled/disabled and the value of the pull-up/pull-down resistor cannot be programmed.

Range of fixed pull-up resistor can be between 26k-63k Ω . Range of fixed pull-down resistor can be between 31k-85k Ω .

The MLB pins are only available on the ADSP-21462W/21465W and ADSP-21469W processors. These pins are NC (no connect) on the ADSP-21467 and ADSP-21469

processors. For more information, see PBGA Pinout – ADSP-21462W/ADSP-21465W/ADSP-21469W on Page 55 , and PBGA Pinout - ADSP-21467/ADSP-21469 on

Rev. PrC

| Page 16 of 62 | January 2009

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