參數資料
型號: PIC16F74T-I/ML
廠商: Microchip Technology
文件頁數: 83/104頁
文件大小: 0K
描述: IC MCU FLASH 4KX14 A/D 44QFN
標準包裝: 1,600
系列: PIC® 16F
核心處理器: PIC
芯體尺寸: 8-位
速度: 20MHz
連通性: I²C,SPI,UART/USART
外圍設備: 欠壓檢測/復位,POR,PWM,WDT
輸入/輸出數: 33
程序存儲器容量: 7KB(4K x 14)
程序存儲器類型: 閃存
RAM 容量: 192 x 8
電壓 - 電源 (Vcc/Vdd): 4 V ~ 5.5 V
數據轉換器: A/D 8x8b
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-VQFN 裸露焊盤
包裝: 帶卷 (TR)
Micrel, Inc.
KSZ8851-16MLLJ
March 2010
71
M9999-030210-1.0
PHY 1 MII-Register Basic Control Register (0xE4 – 0xE5): P1MBCR
This register contains Media Independent Interface (MII) register for port 1 as defined in the IEEE 802.3 specification.
Bit
Default
R/W
Description
Bit is same as:
15
0
RO
Reserved
14
0
RW
Local (far-end) loopback (llb)
1 = perform local loopback at host
(host Tx -> PHY -> host Rx, see Figure 10)
0 = normal operation
13
1
RW
Force 100
1 = force 100Mbps if AN is disabled (bit 12)
0 = force 10Mbps if AN is disabled (bit 12)
Bit 6 in P1CR
12
1
RW
AN Enable
1 = auto-negotiation enabled.
0 = auto-negotiation disabled.
Bit 7 in P1CR
11-10
0
RW
Reserved
9
0
RW
Restart AN
1 = restart auto-negotiation.
0 = normal operation.
Bit 13 in P1CR
8
1
RW
Force Full Duplex
1 = force full duplex
0 = force half duplex.
if AN is disabled (bit 12) or AN is enabled but failed.
Bit 5 in P1CR
7-6
0
RO
Reserved
5
1
R/W
HP_mdix
1 = HP Auto MDI-X mode.
0 = Micrel Auto MDI-X mode.
Bit 15 in P1SR
4
0
RW
Force MDI-X
1 = force MDI-X.
0 = normal operation.
Bit 9 in P1CR
3
0
RW
Disable MDI-X
1 = disable auto MDI-X.
0 = normal operation.
Bit 10 in P1CR
2
0
RW
Reserved.
1
0
RW
Disable Transmit
1 = disable transmit.
0 = normal operation.
Bit 14 in P1CR
0
RW
Disable LED
1 = disable all LEDs.
0 = normal operation.
Bit 15 in P1CR
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