LP1072 datasheet(13/32 Pages) FREESCALE

13 / 32 page

LP1072 Interfaces

LP1072 Advance Information, Rev. 0.3

Freescale Semiconductor

PRELIMINARY

Device to SDIO Host Interrupt Enable 0 (0x0017)

7:0

Arm_to_sdio_inte_en[7:0]

Individual bit enables for each of the device to host

interrupt source bits. Setting the corresponding bit

to a “1” enables the interrupt; “0” disables the

interrupt. The SDIO Host can disable all interrupts

by disabling the main SDIO host interrupt in the

CCCR register.

⎯

0’s

Device to SDIO Host Interrupt Enable 1 (0x0018)

2:0

Arm_to_sdio_inte_en[10:8]

Individual bit enables for each of the device to host

interrupt source bits. Setting the corresponding bit

to a “1” enables the interrupt; “0” disables the

interrupt. The SDIO Host can disable all interrupts

by disabling the main SDIO host interrupt in the

CCCR register.

Bit 0 is enable for semaphore 0 granted; bit 1 is

semaphore 1; and bit 2 is semaphore 2.

⎯

0’s

7:3

⎯

Reserved

⎯

SDIO Host Mailbox Semaphore 0 Register (offset 0x001C)

1:0

Sdio_mbxp_0_sema

2 bit semaphore register to control whether the

host or the device has access to the shared

mailbox ram 0. The host should write a “01” to this

“01” the host should read this register. If the value

is “01” then the host owns access to the mailbox.

If the value read is “11” then the device owns

access to the mailbox. When the host is done

utilizing the mailbox then it should release

ownership of the mailbox by writing “00” to this

0’s

7:2

Reserved

⎯

SDIO Host Mailbox Semaphore 1 Register (offset 0x001D)

1:0

Sdio_mbxp_1_sema

2 bit semaphore register to control whether the

host or the device has access to the shared

mailbox ram 1. The host should write a “01” to this

“01” the host should read this register. If the value

is “01” then the host owns access to the mailbox.

If the value read is “11” then the device owns

access to the mailbox. When the host is done

utilizing the mailbox then it should release

ownership of the mailbox by writing “00” to this

0’s

7:2

Reserved

⎯

Table 8. SDIO Function 1 Registers (continued)

Bit

Name

Description

ARM

Access

HOST

Access

Reset

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