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VisualDSP++ 4.5 Loader and Utilities Manual - Analog Devices

VisualDSP++ 4.5 Loader and Utilities Manual - Analog Devices

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ADSP-2106x/21160 Processor Booting<br />

Table 3-5. ADSP-21065L Boot Mode Pins<br />

Pin Type Description<br />

BMS I/O/T 1 Boot memory select<br />

When BSEL is low, BMS is an input pin <strong>and</strong> selects between host boot mode<br />

<strong>and</strong> no-boot mode. In no-boot mode, the processor executes from external<br />

memory. For no-boot mode, connect BMS to ground. For host boot mode,<br />

connect BMS to VDD.<br />

When BSEL is high, BMS is an output pin <strong>and</strong> the processor starts up in<br />

EPROM boot mode. Connect BMS to the EPROM’s chip select.<br />

BSEL I EPROM boot select<br />

Hardwire this signal; it is used for system configuration.<br />

When BSEL is high, the processor starts up in EPROM boot mode.<br />

The processor assumes the EPROM data bus is 8 bits wide. Connect BSEL to<br />

the processor data bus in LSB alignment.<br />

When BSEL is low, BMS determines the booting mode. Connect BSEL to<br />

ground.<br />

1 Three-statable in EPROM boot mode (when BMS is an output).<br />

Table 3-6. ADSP-21065L Boot Modes<br />

BSEL BMS Description<br />

0 1 No-boot mode.<br />

The processor executes from external memory at location 0x20004.<br />

0 1 Host boot mode.<br />

The processor defaults to an 8-bit host bus width.<br />

1 Output EPROM boot mode.<br />

The processor assumes an 8-bit EPROM data bus width. Connect to the<br />

data bus in LSB alignment.<br />

3-6 <strong>VisualDSP++</strong> <strong>4.5</strong> <strong>Loader</strong> <strong>and</strong> <strong>Utilities</strong> <strong>Manual</strong>

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