AT83SND2CMP3B datasheet(154/241 Pages) ATMEL

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154

4341F–MP3–03/06

AT8xC51SND2C/MP3B

Table 18-13.

MMMSK Register

MMMSK (S:DFh) – MMC Interrupt Mask Register

Reset Value = 1111 1111b

Table 18-14.

MMCMD Register

MMCMD (S:DDh) – MMC Command Register

Reset Value = 1111 1111b

543

210

MCBM

EORM

EOCM

EOFM

F2FM

F1FM

F2EM

F1EM

Bit Number

Bit

Mnemonic

Description

7MCBM

MMC Card Busy Interrupt Mask Bit

Set to prevent MCBI flag from generating an MMC interrupt.

Clear to allow MCBI flag to generate an MMC interrupt.

6EORM

End Of Response Interrupt Mask Bit

Set to prevent EORI flag from generating an MMC interrupt.

Clear to allow EORI flag to generate an MMC interrupt.

5EOCM

End Of Command Interrupt Mask Bit

Set to prevent EOCI flag from generating an MMC interrupt.

Clear to allow EOCI flag to generate an MMC interrupt.

4EOFM

End Of Frame Interrupt Mask Bit

Set to prevent EOFI flag from generating an MMC interrupt.

Clear to allow EOFI flag to generate an MMC interrupt.

3F2FM

FIFO 2 Full Interrupt Mask Bit

Set to prevent F2FI flag from generating an MMC interrupt.

Clear to allow F2FI flag to generate an MMC interrupt.

2F1FM

FIFO 1 Full Interrupt Mask Bit

Set to prevent F1FI flag from generating an MMC interrupt.

Clear to allow F1FI flag to generate an MMC interrupt.

1F2EM

FIFO 2 Empty Interrupt Mask Bit

Set to prevent F2EI flag from generating an MMC interrupt.

Clear to allow F2EI flag to generate an MMC interrupt.

0F1EM

FIFO 1 Empty Interrupt Mask Bit

Set to prevent F1EI flag from generating an MMC interrupt.

Clear to allow F1EI flag to generate an MMC interrupt.

543

210

MC7

MC6

MC5

MC4

MC3

MC2

MC1

MC0

Bit Number

Bit

Mnemonic

Description

7 - 0

MC7:0

MMC Command Receive Byte

Output (read) register of the response FIFO.

MMC Command Transmit Byte

Input (write) register of the command FIFO.

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