SAM3S8B Atmel Corporation, SAM3S8B Datasheet - Page 844
SAM3S8B
Manufacturer Part Number
SAM3S8B
Description
Manufacturer
Atmel Corporation
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34.14.2
Name:
Address:
Access:
This register can only be written if the WPEN bit is cleared in
• CLKDIV: Clock Divider
High Speed MultiMedia Card Interface clock (MCCK or HSMCI_CK) is Master Clock (MCK) divided by (2*(CLKDIV+1)).
• PWSDIV: Power Saving Divider
High Speed MultiMedia Card Interface clock is divided by 2
Warning: This value must be different from 0 before enabling the Power Save Mode in the HSMCI_CR (HSMCI_PWSEN
bit).
• RDPROOF Read Proof Enable
Enabling Read Proof allows to stop the HSMCI Clock during read access if the internal FIFO is full. This will guarantee data
integrity, not bandwidth.
0 = Disables Read Proof.
1 = Enables Read Proof.
• WRPROOF Write Proof Enable
Enabling Write Proof allows to stop the HSMCI Clock during write access if the internal FIFO is full. This will guarantee data
integrity, not bandwidth.
0 = Disables Write Proof.
1 = Enables Write Proof.
• FBYTE: Force Byte Transfer
Enabling Force Byte Transfer allow byte transfers, so that transfer of blocks with a size different from modulo 4 can be
supported.
Warning: BLKLEN value depends on FBYTE.
0 = Disables Force Byte Transfer.
1 = Enables Force Byte Transfer.
844
844
PDCMODE
31
23
15
7
SAM3S8/SD8
SAM3S8/SD8
HSMCI Mode Register
PADV
30
22
14
HSMCI_MR
0x40000004
Read-write
6
FBYTE
29
21
13
5
WRPROOF
28
20
12
4
BLKLEN
BLKLEN
CLKDIV
(PWSDIV)
“HSMCI Write Protect Mode Register” on page
RDPROOF
+ 1 when entering Power Saving Mode.
27
19
11
3
26
18
10
2
PWSDIV
25
17
9
1
11090A–ATARM–10-Feb-12
11090A–ATARM–10-Feb-12
868.
24
16
8
0
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