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부품번호 | AN11275 기능 |
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기능 | SGPIO on the LPC4300 | ||
제조업체 | NXP Semiconductors | ||
로고 | |||
AN11275
SGPIO on the LPC4300
Rev. 1 — 7 November 2012
Application note
Document information
Info Content
Keywords
SGPIO, LPC4300, PWM
Abstract
A guide how to set up and use SGPIO on the LPC4300 series
http://www.DataSheet4U.net/
datasheet pdf - http://www.DataSheet4U.net/
NXP Semiconductors
AN11275
SGPIO on the LPC4300
2. What is SGPIO?
Serial GPIO is a new digital configurable peripheral available on the LPC43XX devices
from NXP.
With SGPIO it is possible to create serial data protocols with very little CPU load
compared to bit banging.
SGPIO’s basic building block is slice. The slice is the hardware part that handles the data
processing when sending or receiving data. There are a total of 16 SGPIO slices and 16
SGPIO IO pins in the SGPIO interface.
Fig 1 shows the basic components inside a slice. A slice basically consists of a 32-bit
FIFO (main register REG in Fig 1) that is used to clock data in or out, a shadow register
(REG_SS register in Fig 1) for setting up the output data or receiving the input data, a
12-bit down counter to generate the shift clock and an 8-bit down counter to control the
number of bits shifted in or out.
http://www.DataSheet4U.net/
Fig 1. Block diagram of a single slice
The slice’s shift clock can be sourced from the SGPIO peripheral clock
(SGPIO_CLOCK). Please refer to Fig 2 below to understand SGPIO_CLOCK’s base
clock, and section 5.1 for more SGPIO_CLOCK setup.
AN11275
Application note
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 7 November 2012
© NXP B.V. 2012. All rights reserved.
4 of 20
datasheet pdf - http://www.DataSheet4U.net/
4페이지 NXP Semiconductors
AN11275
SGPIO on the LPC4300
Fig 4. Table 212 of the user manual, Output pin multiplexer configuration
register OUT_MUX_CFG
http://www.DataSheet4U.net/
Bits 6:4 determine how the output enable is controlled. The output enable can be
controlled by the GPIO_OENREG register or by a different slice according to the
configuration above. The output states include low or high in active mode or tri-state
when disabled.
In the following table the output pin multiplexing can be found.
AN11275
Application note
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 7 November 2012
© NXP B.V. 2012. All rights reserved.
7 of 20
datasheet pdf - http://www.DataSheet4U.net/
7페이지 | |||
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
AN11275 | SGPIO on the LPC4300 | NXP Semiconductors |
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