MK30DN512ZVLK10 Freescale Semiconductor, MK30DN512ZVLK10 Datasheet - Page 1311

• Manufacturer Part Number: MK30DN512ZVLK10
• Description: ARM Microcontrollers - MCU KINETIS 512K SLCD
• Manufacturer: Freescale Semiconductor

Specifications of MK30DN512ZVLK10

• Core: ARM Cortex M4
• Processor Series: K30
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 50 MHz
• Program Memory Size: 512 KB
• Data Ram Size: 128 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 1.71 V to 3.6 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: LQFP-80
• Mounting Style: SMD/SMT

SDIO interrupt status latched in the SDHC and to stop driving the interrupt signal to the
system interrupt controller. The host driver must issue a CMD52 to clear the card
interrupt. After completion of the card interrupt service, the SDIO Interrupt Enable bit is
set to 1, and the SDHC starts sampling the interrupt signal again.
The following diagram illustrates the SDIO card interrupt scheme and for the sequences
of software and hardware events that take place during a card interrupt handling
procedure.
45.5.7 Card insertion and removal detection
The SDHC uses either the DAT[3] pin or the CD pin to detect card insertion or removal.
When there is no card on the MMC/SD bus, the DAT[3] will be pulled to a low voltage
level by default. When any card is inserted to or removed from the socket, the SDHC
detects the logic value changes on the DAT[3] pin and generates an interrupt. When the
DAT[3] pin is not used for card detection (for example, it is implemented in GPIO), the
CD pin must be connected for card detection. Whether DAT[3] is configured for card
Freescale Semiconductor, Inc.
Clear IRQ0
Figure 45-36. Card interrupt scheme and card interrupt detection and handling
SDIO Card
SD Host
eSDHC Registers
SDIO IRQ Enable
SDIO IRQ Status
IRQ0
Function 0
IRQ Detecting & Steering
IP Bus
IRQ Routing
SDIO Card
K30 Sub-Family Reference Manual, Rev. 6, Nov 2011
IRQ to CPU
Function 1
Command/
Response
Handling
IRQ1
procedure
Clear IRQ1
Chapter 45 Secured digital host controller (SDHC)
Interrogate and service Card IRQ
Detect and steer card IRQ
Read IRQ Status Register
Enable card IRQ in Host
Disable Card IRQ in Host
Enable card IRQ in Host
Clear Card IRQ in Card
Response Error?
Start
End
No
Yes
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