MK30DN512ZVLK10 Freescale Semiconductor, MK30DN512ZVLK10 Datasheet - Page 1321

• 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

For MMC operation, the host starts the card identification process in open-drain mode
with the identification clock rate lower than 400 kHz and the power voltage higher than
2.7 V. The open drain driver stages on the CMD line allow parallel card operation during
card identification. After the bus is activated the host will request the cards to send their
valid operation conditions (CMD1). The response to CMD1 is the "wired OR" operation
on the condition restrictions of all cards in the system. Incompatible cards are sent into
the inactive state. The host then issues the broadcast command All_Send_CID (CMD2),
asking all cards for their unique card identification (CID) number. All unidentified cards
(the cards in ready state) simultaneously start sending their CID numbers serially, while
bit-wise monitoring their outgoing bit stream. Those cards, whose outgoing CID bits do
not match the corresponding bits on the command line in any one of the bit periods, stop
sending their CID immediately and must wait for the next identification cycle. Since the
CID is unique for each card, only one card can be successfully send its full CID to the
host. This card then goes into the identification state. Thereafter, the host issues
Set_Relative_Addr (CMD3) to assign to the card a relative card address (RCA). Once the
RCA is received the card state changes to the standby state, and the card does not react in
further identification cycles, and its output driver switches from open-drain to push-pull.
The host repeats the process, mainly CMD2 and CMD3, until the host receives a time-out
condition to recognize the completion of the identification process.
For CE-ATA operation (same interface as MMC cards):
card_registry()
{
do { // decide RCA for each card until response time-out
RCA
relative address to access the CE-ATA card
bits
} while (response is not time-out);
}
45.6.3 Card access
This section discusses the various card access methods.
Freescale Semiconductor, Inc.
if(card is labelled as SDCombo or SDIO) { // for SDIO card like device
} // end if (card is labelled as SDCombo ...
else if (card is labelled as SD) { // for SD card
} // else if (card is labelled as SD ...
else if (card is labelled as MMC or CE-ATA) { // treat CE-ATA as MMC
} // end of else if (card is labelled as MMC ...
send_command(SET_RELATIVE_ADDR, 0x00, <...>); // ask SDIO card to publish its
retrieve RCA from response;
send_command(ALL_SEND_CID, <...>);
if (RESP_TIMEOUT == wait_for_response(ALL_SEND_CID)) break;
send_command(SET_RELATIVE_ADDR, <...>);
retrieve RCA from response;
send_command(ALL_SEND_CID, <...>);
rca = 0x1; // arbitrarily set RCA, 1 here for example, this RCA is also the
send_command(SET_RELATIVE_ADDR, 0x1 << 16, <...>); // send RCA at upper 16
K30 Sub-Family Reference Manual, Rev. 6, Nov 2011
Chapter 45 Secured digital host controller (SDHC)
1321