McSPI Registers
24.4.1.10 McSPI Channel (i) Control Register (MCSPI_CH(I)CTRL)
The McSPI channel i control register (MCSPI_CHiCTRL) is used to enable channel i. The
MCSPI_CHiCTRL is shown in
and described in
.
Figure 24-35. McSPI Channel (i) Control Register (MCSPI_CH(I)CTRL)
31
16
Reserved
R/W-0
15
8
7
1
0
EXTCLK
Reserved
EN
R/W-0
R/W-0
R/W-0
LEGEND: R/W = Read/Write; -n = value after reset
Table 24-21. McSPI Channel (i) Control Register (MCSPI_CH(I)CTRL) Field Descriptions
Bit
Field
Value
Description
31-16
Reserved
0
Reserved
15-8
EXTCLK
Clock ratio extension. Used to concatenate with the CLKD bit field in MCSPI_CHnCONF for clock ratio
only when granularity is 1 clock cycle (CLKG bit in MCSPI_CHnCONF set to 1). Then the maximum
value reached is a 4096 clock divider ratio.
0
Clock ratio is CLKD + 1
1h
Clock ratio is CLKD + 1 + 16
...
...
FFh
Clock ratio is CLKD + 1 + 4080
7-1
Reserved
0
Reserved
0
EN
Channel n enable.
0
Channel n is not active.
1
Channel n is active.
4051
SPRUH73H – October 2011 – Revised April 2013
Multichannel Serial Port Interface (McSPI)
Copyright © 2011–2013, Texas Instruments Incorporated