Preliminary
Registers
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Table 12-14. McSPI Channel (i) Configuration Register (MCSPI_CH(i)CONF) Field Descriptions
(continued)
Bit
Field
Value
Description
5-2
CLKD
Frequency divider for SPICLK. (only when the module is a Master SPI device). A programmable clock
divider divides the SPI reference clock (CLKSPIREF) with a 4-bit value, and results in a new clock
SPICLK available to shift-in and shift-out data. By default the clock divider ratio has a power of two
granularity when MCSPI_CHCONF[CLKG] is cleared, Otherwise this register is the 4 LSB bit of a 12-bit
register concatenated with clock divider extension MCSPI_CHCTRL[EXTCLK] register.
The value description below defines the clock ratio when MCSPI_CHCONF[CLKG] is cleared to 0.
0
Divide by 1.
1h
2
2h
4
3h
8
4h
16
5h
32
6h
64
7h
128
8h
256
9h
512
Ah
1024
Bh
2048
Ch
4096
Dh
8192
Eh
16384
Fh
32768
1
POL
SPICLK polarity
0
SPICLK is held high during the active state
1
SPICLK is held low during the active state
0
PHA
SPICLK phase
0
Data are latched on odd numbered edges of SPICLK
1
Data are latched on even numbered edges of SPICLK
Table 12-15. Data Lines Configurations
TRMi
ISi
DPEi1
DPEi0
Transmit and Receive
Receive Only
Transmit Only
0
0
0
Supported
Supported
Supported
0
0
1
Supported
Supported
Supported
0
1
0
Supported
Supported
Supported
0
1
1
Not supported
Supported
Not supported
(unpredictable result)
(unpredictable result)
1
0
0
Supported
Supported
Supported
1
0
1
Supported
Supported
Supported
1
1
0
Supported
Supported
Supported
1
1
1
Not supported
Supported
Not supported
(unpredictable result)
(unpredictable result)
1266
Multichannel Serial Port Interface (McSPI)
SPRUGX9 – 15 April 2011
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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