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10.3.25 Transmit Format Unit Bit Mask Register (XMASK)
The transmit format unit bit mask register (XMASK) determines which bits of the transmitted data are
masked off and padded with a known value before being shifted out the McASP. The XMASK is shown
in
Figure 10-62
and described in
31
LEGEND: R/W = Read/Write; -n = value after reset
Table 10-34. Transmit Format Unit Bit Mask Register (XMASK) Field Descriptions
Bit
Field
31-0
XMASK[31-0]
SPRUGX9 – 15 April 2011
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Preliminary
Table
10-34.
Figure 10-62. Transmit Format Unit Bit Mask Register (XMASK)
Value
Description
Transmit data mask n enable bit.
0
Corresponding bit of transmit data (before passing through reverse and rotate units) is masked out
and then padded with the selected bit pad value (XPAD and XPBIT bits in XFMT), which is
transmitted out the McASP in place of the original bit.
1
Corresponding bit of transmit data (before passing through reverse and rotate units) is transmitted
out the McASP.
© 2011, Texas Instruments Incorporated
XMASK[n]
R/W-0
Multichannel Audio Serial Port (McASP)
Registers
0
1103
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