Atmel Evaluation Kit AT91SAM9G25-EK AT91SAM9G25-EK Data Sheet
Product codes
AT91SAM9G25-EK
621
SAM9G25 [DATASHEET]
11032D–ATARM–10-Mar-2014
34.6.3 Interrupt
The HSMCI interface has an interrupt line connected to the interrupt controller.
Handling the HSMCI interrupt requires programming the interrupt controller before configuring the HSMCI.
34.7
Bus Topology
Figure 34-3. High Speed MultiMedia Memory Card Bus Topology
The High Speed MultiMedia Card communication is based on a 13-pin serial bus interface. It has three communication
lines and four supply lines.
lines and four supply lines.
Notes: 1.
I: Input, O: Output, PP: Push/Pull, OD: Open Drain.
2.
When several HSMCI (x HSMCI) are embedded in a product, MCCK refers to HSMCIx_CK, MCCDA to
HSMCIx_CDA, MCDAy to HSMCIx_DAy.
HSMCIx_CDA, MCDAy to HSMCIx_DAy.
Table 34-3. Peripheral IDs
Instance
ID
HSMCI0
12
HSMCI1
26
Table 34-4. Bus Topology
Pin
Number
Number
Name
Type
Description
HSMCI Pin Name
(Slot z)
1
DAT[3]
I/O/PP
Data MCDz3
2
CMD
I/O/PP/OD
Command/response
MCCDz
3
VSS1
S
Supply voltage ground
VSS
4
VDD
S
Supply voltage
VDD
5
CLK
I/O
Clock
MCCK
6
VSS2
S
Supply voltage ground
VSS
7
DAT[0]
I/O/PP
Data 0
MCDz0
8
DAT[1]
I/O/PP
Data 1
MCDz1
9
DAT[2]
I/O/PP
Data 2
MCDz2
10
DAT[4]
I/O/PP
Data 4
MCDz4
11
DAT[5]
I/O/PP
Data 5
MCDz5
12
DAT[6]
I/O/PP
Data 6
MCDz6
13
DAT[7]
I/O/PP
Data 7
MCDz7
2 3 4 5 6
1
7
MMC
9 1011
1213 8