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The DSP has general-purpose and dedicated registers in each of its functional blocks, страница 10

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G PIO Wa k e up C ontrol (G PIO WA KEC TL) Re g iste r ! This register resets to zero.

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G PIO Sta tus (G PIO STA T) Re g iste r ! This register resets to 0xFF.

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G PIO C ontrol (G PIO C TL) Re g iste r ! This register resets to 0x7F.

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G PIO Pullup (G PIO PUP) Re g iste r ! This register resets to 0xFF.

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G PIO Pulld own (G PIO PDN) Re g iste r ! This register resets to zero.

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EEPRO M I/O C ontrol/Sta tus (SPRO MC TL) Re g ister

The EEPROM register controls access to the serial EEPROM. Table B-8 lists the Peripheral Device Control Register Space for EEPROM Control Register.

Table B-8. SPROMCTL Control Register

Register Name

Description

PCI Address

USB Address

DSP

I/O

Page

DSP

I/O

Address

SPROMCTL

EEPROM I/O

Control/Status Controls the direction and status for SEN, SCK, SDA pins.

0x30

0x30

0x00

0x30

This register is reset by any of the following:

•  Power-On Reset

•  SYSRST asserted

•  Soft Reset using the PCC:RST bit

•  PCI RST asserted when the AC97LCTL:DSPR bit is 0

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