Preliminary
Registers
www.ti.com
10.3.26 Transmit Bit Stream Format Register (XFMT)
The transmit bit stream format register (XFMT) configures the transmit data format. The XFMT is shown
in
and described in
.
Figure 10-63. Transmit Bit Stream Format Register (XFMT)
31
18
17
16
Reserved
XDATDLY
R-0
R/W-0
15
14
13
12
8
7
4
3
2
0
XRVRS
XPAD
XPBIT
XSSZ
XBUSEL
XROT
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 10-35. Transmit Bit Stream Format Register (XFMT) Field Descriptions
Bit
Field
Value
Description
31-18
Reserved
0
Reserved. The reserved bit location always returns the default value. A value written to this field has no
effect. If writing to this field, always write the default value for future device compatibility.
17-16
XDATDLY
0-3h
Transmit sync bit delay.
0
0-bit delay. The first transmit data bit, AXRn, occurs in same ACLKX cycle as the transmit frame sync
(AFSX).
1h
1-bit delay. The first transmit data bit, AXRn, occurs one ACLKX cycle after the transmit frame sync
(AFSX).
2h
2-bit delay. The first transmit data bit, AXRn, occurs two ACLKX cycles after the transmit frame sync
(AFSX).
3h
Reserved.
15
XRVRS
Transmit serial bitstream order.
0
Bitstream is LSB first. No bit reversal is performed in transmit format bit reverse unit.
1
Bitstream is MSB first. Bit reversal is performed in transmit format bit reverse unit.
14-13
XPAD
0-3h
Pad value for extra bits in slot not belonging to word defined by XMASK. This field only applies to bits
when XMASK[n] = 0.
0
Pad extra bits with 0.
1h
Pad extra bits with 1.
2h
Pad extra bits with one of the bits from the word as specified by XPBIT bits.
3h
Reserved.
12-8
XPBIT
0-1Fh
XPBIT value determines which bit (as written by the CPU or DMA to XBUF[n]) is used to pad the extra
bits before shifting. This field only applies when XPAD = 2h.
0
Pad with bit 0 value.
1-1Fh
Pad with bit 1 to bit 31 value.
1104
Multichannel Audio Serial Port (McASP)
SPRUGX9 – 15 April 2011
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
Страница 2: ...Preliminary 2 SPRUGX9 15 April 2011 Submit Documentation Feedback 2011 Texas Instruments Incorporated...
Страница 92: ...92 Read This First SPRUGX9 15 April 2011 Submit Documentation Feedback 2011 Texas Instruments Incorporated...
Страница 1122: ...1122 Multichannel Audio Serial Port McASP SPRUGX9 15 April 2011 Submit Documentation Feedback 2011 Texas Instruments Incorporated...
Страница 1562: ...1562 Real Time Clock RTC SPRUGX9 15 April 2011 Submit Documentation Feedback 2011 Texas Instruments Incorporated...
Страница 1658: ...1658 Timers SPRUGX9 15 April 2011 Submit Documentation Feedback 2011 Texas Instruments Incorporated...
Страница 1750: ...1750 UART IrDA CIR Module SPRUGX9 15 April 2011 Submit Documentation Feedback 2011 Texas Instruments Incorporated...
Страница 1984: ...1984 Universal Serial Bus USB SPRUGX9 15 April 2011 Submit Documentation Feedback 2011 Texas Instruments Incorporated...