McASP Registers
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22.4.1.26 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 22-64 and described in Table 22-37.
Figure 22-64. Transmit Format Unit Bit Mask Register (XMASK)
31 0
XMASK[n]
R/W-0
LEGEND: R/W = Read/Write; -n = value after reset
Table 22-37. Transmit Format Unit Bit Mask Register (XMASK) Field Descriptions
Bit Field Value Description
31-0 XMASK[31-0] 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.
3862
Multichannel Audio Serial Port (McASP) SPRUH73H–October 2011–Revised April 2013
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