參數(shù)資料
型號(hào): ENC424J600T-I/ML
廠商: Microchip Technology
文件頁數(shù): 130/168頁
文件大?。?/td> 0K
描述: IC ETHERNET CTRLR W/SPI 44-QFN
視頻文件: Fast 100 Mbps Ethernet PICtail Plus Overview
標(biāo)準(zhǔn)包裝: 1,600
控制器類型: 以太網(wǎng)控制器(IEEE 802.3)
接口: SPI
電源電壓: 3 V ~ 3.6 V
電流 - 電源: 96mA
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 44-VQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 44-QFN(8x8)
包裝: 帶卷 (TR)
配用: AC164132-ND - BOARD DAUGHTER PICTAIL ETHERNET
PIC16CR7X
DS21993C-page 62
2007 Microchip Technology Inc.
FIGURE 9-1:
SSP BLOCK DIAGRAM
(SPI MODE)
To enable the serial port, SSP enable bit, SSPEN
(SSPCON<5>) must be set. To reset or reconfigure SPI
mode, clear bit SSPEN, re-initialize the SSPCON
register, and then set bit SSPEN. This configures the
SDI, SDO, SCK and SS pins as serial port pins. For the
pins to behave as the serial port function, they must
have their data direction bits (in the TRISC register)
appropriately programmed. That is:
SDI must have TRISC<4> set
SDO must have TRISC<5> cleared
SCK (Master mode) must have TRISC<3>
cleared
SCK (Slave mode) must have TRISC<3> set
SS must have TRISA<5> set and ADCON must
be configured such that RA5 is a digital I/O
Read
Write
Internal
Data Bus
RC4/SDI/SDA
RC5/SDO
RA5/SS/AN4
RC3/SCK/
SSPSR Reg
SSPBUF Reg
SSPM3:SSPM0
bit 0
Shift
Clock
SS Control
Enable
Edge
Select
Clock Select
TMR2 Output
TCY
Prescaler
4, 16, 64
TRISC<3>
2
Edge
Select
2
4
SCL
Peripheral OE
Note 1: When the SPI is in Slave mode with SS
pin control enabled (SSPCON<3:0> =
0100
), the SPI module will reset if the SS
pin is set to VDD.
2: If the SPI is used in Slave mode with
CKE = ‘1’, then the SS pin control must
be enabled.
3: When the SPI is in Slave mode with SS
pin control enabled (SSPCON<3:0> =
‘0100’), the state of the SS pin can affect
the state read back from the TRISC<5>
bit. The Peripheral OE signal from the
SSP module into PORTC controls the
state
that
is
read
back
from
the
TRISC<5> bit (see Section 4.3 “PORTC
on
PORTC).
If
Read-Modify-Write
instructions, such as BSF are performed
on the TRISC register while the SS pin is
high, this will cause the TRISC<5> bit to
be set, thus disabling the SDO output.
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