参数资料
型号: PIC18F442T-I/L
厂商: Microchip Technology
文件页数: 61/134页
文件大小: 0K
描述: IC MCU FLASH 8KX16 EE A/D 44PLCC
产品培训模块: Asynchronous Stimulus
标准包装: 500
系列: PIC® 18F
核心处理器: PIC
芯体尺寸: 8-位
速度: 40MHz
连通性: I²C,SPI,UART/USART
外围设备: 欠压检测/复位,LVD,POR,PWM,WDT
输入/输出数: 34
程序存储器容量: 16KB(8K x 16)
程序存储器类型: 闪存
EEPROM 大小: 256 x 8
RAM 容量: 768 x 8
电压 - 电源 (Vcc/Vdd): 4.2 V ~ 5.5 V
数据转换器: A/D 8x10b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 44-LCC(J 形引线)
包装: 带卷 (TR)
配用: XLT44L2-ND - SOCKET TRAN ICE 44PLCC
Micrel, Inc.
KSZ8864RMN
April 2012
32
M9999-043012-1.5
SW3/4-RMII MAC to MAC Connection
(“PHY” Mode)
SW3/4-RMII MAC to PHY Connection
(“MAC” Mode)
External
MAC
KSZ8864RMN
Signal
KSZ8864RMN SW
Signal Type
Description
External
PHY
KSZ8864RMN
Signal
KSZ8864RMN SW
Signal Type
REF_CLK
SMxRXC
Output
(Clock mode
with 50MHz)
Reference
Clock
SMxTXC
/SMxREFCLK
Input
(Clock comes from
SMxRXC in clock mode
or external 50MHz clock)
CRS_DV
SMxRXDV
/SMxCRSDV
Output
Carrier
Sense/Receive
Data Valid
CRS_DV
SMxTXEN
Input
RXD1
SMxRXD[1]
Output
Receive
Data Bit 1
RXD1
SMxTXD[1]
Input
RXD0
SMxRXD[0]
Output
Receive
Data Bit 0
RXD0
SMxTXD[0]
Input
TX_EN
SMxTXEN
Input
Transmit Data
Enable
TX_EN
SMxRXDV
/SMxCRSDV
Output
TXD1
SMxTXD[1]
Input
Transmit
Data Bit 1
TXD1
SMxRXD[1]
Output
TXD0
SMxTXD[0]
Input
Transmit
Data
Bit 0
TXD0
SMxRXD[0]
Output
(Not
Used)
(Not Used)
Receive
Error
(Not Used)
(not used)
SMxTXC
/SMxREFCLK
Input
(Clock comes from
SMxRXC in clock mode
or external 50MHz
clock)
Reference
Clock
REF_CLK
SMxRXC
Output
(Clock mode
with 50MHz )
Notes
:
1.
‘x’ is 3 or 4 for SW3 or SW4 in the table.
2.
MAC/PHY mode in RMII is difference with MAC/PHY mode in MII, there is no strap pin and register configuration request in RMII, just follow the
signals connection in the table.
Table 4. MAC3 SW3-RMII and MAC4 SW4-RMII Connection
KSZ8864RMN provides two RMII interfaces for MAC3 and MAC4:
Switch MAC4 SW4-RMII interface can be used to provide 50MHz clock to opposite RMII from SM4RXC pin with loop
back to SM4TXC pin. The SW4-RMII interface can be used to accept 50MHz from external 50MHz clock to SM4TXC
when KSZ8864RMN is configured to normal mode by the strap pin P1LED1 pull-down. In the normal mode, the clock
source of the KSZ8864RMN comes from the SM4TXC.
Switch MAC3 SW3-RMII interface can be used to provide 50MHz clock to opposite RMII from SM3RXC pin with loop
back to SM3TXC pin. The SW3-RMII interface can not be used to accept 50MHz from external to SM3TXC with the
normal mode configuration.
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