参数资料
型号: ENC424J600T-I/ML
厂商: Microchip Technology
文件页数: 67/168页
文件大小: 0K
描述: IC ETHERNET CTRLR W/SPI 44-QFN
视频文件: Fast 100 Mbps Ethernet PICtail Plus Overview
标准包装: 1,600
控制器类型: 以太网控制器(IEEE 802.3)
接口: SPI
电源电压: 3 V ~ 3.6 V
电流 - 电源: 96mA
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 44-VQFN 裸露焊盘
供应商设备封装: 44-QFN(8x8)
包装: 带卷 (TR)
配用: AC164132-ND - BOARD DAUGHTER PICTAIL ETHERNET
2007 Microchip Technology Inc.
DS39599G-page 157
PIC18F2220/2320/4220/4320
REGISTER 17-2:
SSPCON1: MSSP CONTROL REGISTER 1 (SPI MODE)
R/W-0
WCOL
SSPOV(1)
SSPEN(2)
CKP
SSPM3(3)
SSPM2(3)
SSPM1(3)
SSPM0(3)
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7
WCOL: Write Collision Detect bit (Transmit mode only)
1 = The SSPBUF register is written while it is still transmitting the previous word (must be cleared in
software)
0 = No collision
bit 6
SSPOV: Receive Overflow Indicator bit(1)
SPI Slave mode:
1 = A new byte is received while the SSPBUF register is still holding the previous data. In case of over-
flow, the data in SSPSR is lost. Overflow can only occur in Slave mode. The user must read the
SSPBUF, even if only transmitting data, to avoid setting overflow (must be cleared in software).
0 = No overflow
bit 5
SSPEN: Master Synchronous Serial Port Enable bit(2)
1 = Enables serial port and configures SCK, SDO, SDI and SS as serial port pins
0 = Disables serial port and configures these pins as I/O port pins
bit 4
CKP: Clock Polarity Select bit
1 = Idle state for clock is a high level
0 = Idle state for clock is a low level
bit 3-0
SSPM3:SSPM0: Master Synchronous Serial Port Mode Select bits(3)
0101 = SPI Slave mode, clock = SCK pin, SS pin control disabled, SS can be used as I/O pin
0100 = SPI Slave mode, clock = SCK pin, SS pin control enabled
0011 = SPI Master mode, clock = TMR2 output/2
0010 = SPI Master mode, clock = FOSC/64
0001 = SPI Master mode, clock = FOSC/16
0000 = SPI Master mode, clock = FOSC/4
Note 1:
In Master mode, the overflow bit is not set since each new reception (and transmission) is initiated by
writing to the SSPBUF register.
2:
When the MSSP is enabled in SPI mode, these pins must be properly configured as input or output.
3:
Bit combinations not specifically listed here are either reserved or implemented in I2C mode only.
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