
Synchronous Serial Interface (SSI)
24-22
Freescale Semiconductor
Table 24-10. SSI_TCR Field Descriptions
Field
Description
31–10
Reserved, must be cleared.
9
TXBIT0
Transmit bit 0 (Alignment). Allows SSI to transmit data word from bit position 0 or 15/31 in the transmit shift register.
The shifting data direction can be msb or lsb first, controlled by the TSHFD bit.
0 msb-aligned. Shift with respect to bit 31 (if the word length is 16, 18, 20, 22 or 24) or bit 15 (if the word length is
8, 10 or 12) of the transmit shift register
1 lsb-aligned. Shift with respect to bit 0 of the transmit shift register
8
TFEN1
Transmit FIFO enable 1.
• When enabled, the FIFO allows eight samples to be transmitted by the SSI (per channel) (a ninth sample can be
shifting out) before SSI_ISR[TDE1] is set.
• When the FIFO is disabled, SSI_ISR[TDE1] is set when a single sample is transferred to the transmit shift register.
This issues an interrupt if the interrupt is enabled.
0 Transmit FIFO 1 disabled
1 Transmit FIFO 1 enabled
7
TFEN0
Transmit FIFO enable 0. Similar description as TFEN1, but pertains to Tx FIFO 0.
0 Transmit FIFO 0 disabled
1 Transmit FIFO 0 enabled
6
TFDIR
Frame sync direction. Controls the direction and source of the frame sync signal on the SSI_FS pin.
0 Frame sync is external
1 Frame sync generated internally
5
TXDIR
Clock direction. Controls the direction and source of the clock signal on the SSI_BCLK pin. Refer to
for
details of clock port configuration.
0 Clock is external
1 Clock generated internally
4
TSHFD
Transmit shift direction. Controls whether the msb or lsb is transmitted first in a sample.
0 Data transmitted msb first
1 Data transmitted lsb first
3
TSCKP
Transmit clock polarity. Controls which bit clock edge is used to clock out data for the transmit section.
0 Data clocked out on rising edge of bit clock
1 Data clocked out on falling edge of bit clock
2
TFSI
Transmit frame sync invert. Controls the active state of the frame sync I/O signal for the transmit section of SSI.
0 Transmit frame sync is active high
1 Transmit frame sync is active low
1
TFSL
Transmit frame sync length. Controls the length of the frame sync signal generated or recognized for the transmit
section. The length of a word-long frame sync is the same as the length of the data word selected by SSI_CCR[WL].
0 Transmit frame sync is one-word long
1 Transmit frame sync is one-bit-clock-period long
0
TEFS
Transmit early frame sync. Controls when the frame sync is initiated for the transmit section. The frame sync signal
is deasserted after one bit for a bit length frame sync (TFSL = 1) and after one word for word length frame sync
(TFSL = 0). The frame sync can also be initiated upon receiving the first bit of data.
0 Transmit frame sync initiated as first bit of data transmits
1 Transmit frame sync is initiated one bit before the data transmits
MCF5329 Reference Manual, Rev 3
Содержание MCF5329
Страница 106: ...ColdFire Core 3 32 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 126: ...Enhanced Multiply Accumulate Unit EMAC 4 20 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 148: ...Cache 5 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 154: ...Static RAM SRAM 6 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 184: ...Power Management 8 18 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 204: ...Reset Controller Module 10 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 220: ...System Control Module SCM 11 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 228: ...Crossbar Switch XBS 12 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 268: ...General Purpose I O Module 13 40 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 392: ...SDRAM Controller SDRAMC 18 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 436: ...Fast Ethernet Controller FEC 19 44 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 564: ...Liquid Crystal Display Controller LCDC 22 44 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 594: ...FlexCAN 23 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 678: ...Pulse Width Modulation PWM Module 26 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 684: ...Watchdog Timer Module 27 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 692: ...Programmable Interrupt Timers PIT0 PIT3 28 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 704: ...DMA Timers DTIM0 DTIM3 29 12 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 720: ...Queued Serial Peripheral Interface QSPI 30 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 754: ...UART Modules 31 34 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 770: ...I2 C Interface 32 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 790: ...Message Digest Hardware Accelerator MDHA 33 20 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 866: ...Debug Module 36 50 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 902: ...Register Memory Map Quick Reference A 26 Freescale Semiconductor MCF5329 Reference Manual Rev 3...