Atmel Evaluation Kit AT91SAM9M10-G45-EK AT91SAM9M10-G45-EK Hoja De Datos

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SAM9M10 [DATASHEET]
6355F–ATARM–12-Mar-13
 
33.9.6
SSC  Transmit  Frame  Mode  Register
Name:
SSC_TFMR
Addresses:
0xFFF9C01C (0), 0xFFFA001C (1)
Access:
Read-write  
• DATLEN:  Data  Length
0 = Forbidden value (1-bit data length not supported). 
Any other value: The bit stream contains DATLEN + 1 data bits. Moreover, it defines the transfer size performed by the
PDC assigned to the Transmit. If DATLEN is lower or equal to 7, data transfers are bytes, if DATLEN is between 8 and 15
(included), half-words are transferred, and for any other value, 32-bit words are transferred.
• DATDEF:  Data  Default  Value
This bit defines the level driven on the TD pin while out of transmission. Note that if the pin is defined as multi-drive by the
PIO Controller, the pin is enabled only if the SCC TD output is 1.
• MSBF:  Most  Significant  Bit  First
0 = The lowest significant bit of the data register is shifted out first in the bit stream.
1 = The most significant bit of the data register is shifted out first in the bit stream.
• DATNB:  Data  Number  per  frame
This field defines the number of data words to be transferred after each transfer start, which is equal to (DATNB +1).
• FSLEN:  Transmit  Frame  Syn  Length
This field defines the length of the Transmit Frame Sync signal and the number of bits shifted out from the Transmit Sync
Data Register if FSDEN is 1. 
This field is used with FSLEN_EXT to determine the pulse length of the Transmit Frame Sync signal. 
Pulse length is equal to FSLEN + (FSLEN_EXT * 16) + 1 Transmit Clock period. 
31
30
29
28
27
26
25
24
FSLEN_EXT
FSLEN_EXT
FSLEN_EXT
FSLEN_EXT
FSEDGE
23
22
21
20
19
18
17
16
FSDEN
FSOS
FSLEN
15
14
13
12
11
10
9
8
DATNB
7
6
5
4
3
2
1
0
MSBF
DATDEF
DATLEN