ATSAM3S-EK Atmel, ATSAM3S-EK Datasheet - Page 805

• Manufacturer Part Number: ATSAM3S-EK
• Description: KIT EVAL FOR ATSAM3S4C
• Manufacturer: Atmel
• Series: SAM3Sr
• Type: MCUr

Specifications of ATSAM3S-EK

• Contents: Board, Cables, Power Supply
• Silicon Manufacturer: Atmel
• Core Architecture: ARM
• Core Sub-architecture: Cortex-M3
• Kit Contents: Board
• Features: TFT Colour LCD Display, SD/MMC Interface
• Svhc: No SVHC (15-Dec-2010)
• Rohs Compliant: Yes
• For Use With/related Products: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 35-8. Read Functional Flow Diagram
Note:
6500C–ATARM–8-Feb-11
1. It is assumed that this command has been correctly sent (see
Number of words to read = BlockLength/4
Reset the PDCMODE bit
HSMCI_MR &= ~PDCMODE
Set the block length (in bytes)
HSMCI_MR |= (BlockLenght <<16)
Read status register HSMCI_SR
Number of words to read = 0 ?
Send READ_SINGLE_BLOCK
Number of words to read -1
Number of words to read =
Read data = HSMCI_RDR
RXRDY = 0?
No
command
Poll the bit
No
(1)
No
Send SET_BLOCKLEN command
Send SELECT/DESELECT_CARD
command
Yes
Yes
RETURN
Read with PDC
(1)
to select the card
Figure
(1)
Configure the PDC channel
HSMCI_RPR = Data Buffer Address
HSMCI_RCR = BlockLength/4
HSMCI_PTCR = RXTEN
Set the PDCMODE bit
HSMCI_MR |= PDCMODE
Set the block length (in bytes)
HSMCI_MR |= (BlockLength << 16)
35-7).
Send READ_SINGLE_BLOCK
Read status register HSMCI_SR
Yes
command
ENDRX = 0?
RETURN
Poll the bit
SAM3S Preliminary
No
(1)
Yes
805