DSP56857 datasheet(564/662 Pages) FREESCALE

564 / 662 page

Application:

Date:

Programmer:

Sheet

5685X Digital Signal Controller User Manual, Rev. 4

B-62

Freescale Semiconductor

1 of 6

SPI

SPI Status and Control Register (SPSCR)

SPI Status and

Control Register

(SPSCR)

$1FFFE8

Bits

15 14 13

Read

SPR

DSO ERRIE MODFEN SPRIE SPMSTR CPOL CPHA SPE SPTIE

SPRF OVRF MODF SPTE

Write

Reset 0

Bits

Name

Description

15 - 13

SPR

SPI Baud Rate

These are read/write bits while in Master mode, selects one of four baud rates.

DSO

Data Shift Order

This read/write bit determines whether the MSB or LSB bit is transmitted or received first.

MSB transmitted first (MSB->LSB)

LSB transmitted first (LSB->MSB)

ERRIE

Error Interrupt Enable

This read/write bit enables the MODF and OVRF bits to generate interrupt requests. Reset clears

the ERRIE bit. ERRIE bit enables both the MODF and OVRF bits to generate a receiver/error

interrupt request.

MODF and OVRF cannot generate interrupt requests

MODF and OVRF can generate interrupt requests

MODFEN

Mode Fault Enable

This read/write bit when set to one allows the MODF flag to be set. If the MODF flag is set,

clearing the MODFEN does not clear the MODF flag.

SPRIE

SPI Receiver Interrupt Enable

This read/write bit enables interrupt requests generated by the SPRF bit. The SPRF bit is set

when a full data length transfers from the Shift Register to the Receive Data Register.

SPRF interrupt requests disabled

SPRF interrupt requests enabled

SPMSTR

SPI Master

This read/write bit selects Master mode operation or slave mode operation.

Slave mode

Master mode

denotes Reserved Bits

See the following page for continuation of this register

DSP56857 Datasheet(PDF) 564 Page - Freescale Semiconductor, Inc

DSP56857 Datasheet(HTML) 564 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL