參數(shù)資料
型號: DS80C400-FNY
廠商: Maxim Integrated Products
文件頁數(shù): 53/97頁
文件大?。?/td> 0K
描述: IC MCU 75MHZ 16MB HP 100-LQFP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
產(chǎn)品變化通告: Product Discontinuation 20/Feb/2012
標準包裝: 90
系列: 80C
核心處理器: 8051
芯體尺寸: 8-位
速度: 75MHz
連通性: 1 線,CAN,EBI/EMI,以太網(wǎng),SIO,UART/USART
外圍設(shè)備: 電源故障復(fù)位,WDT
輸入/輸出數(shù): 64
程序存儲器容量: 64KB(64K x 8)
程序存儲器類型: ROM
RAM 容量: 1K x 8
電壓 - 電源 (Vcc/Vdd): 1.62 V ~ 3.6 V
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 100-LQFP
包裝: 托盤
配用: DS80C400-KIT#-ND - EVAL KIT FOR DS80C400
DS80C400 Network Microcontroller
57 of 97
CSR Register:
Flow Control
Register Address:
1Ch
Bit Names:
31
PAUSE [15:8]
24
23
PAUSE [7:0]
16
15
8
7
PCF
FCE
BUSY
0
Reset State:
31
0
24
23
0
16
15
0
8
7
0
PAUSE[15:0], Pause Time [15:0]. These bits are only valid in full-duplex mode. These 16 bits contain the value
that is passed in the pause time field when a pause-control frame is generated. The format for the pause-control
frame is shown in Figure 3.
PCF, Pass Pause-Control Frame. This bit is valid for full-duplex mode only. This bit instructs the MAC whether or
not to set the packet filter bit for pause-control frames.
0 = MAC decodes (if FCE = 1) but does not set the receive status word packet-filter bit (default)
1 = MAC decodes (if FCE = 1) and sets the packet-filter bit = 1 for pause-control frames
FCE, Flow Control Enable
0 = MAC flow control is disabled (default)
1 = MAC flow control enabled; pause-control frame for full-duplex, back-pressure for half-duplex
BUSY, Flow Control Busy. The BUSY bit is only valid in full-duplex mode. The BUSY bit should read logic 0
before initiating a pause-control frame. The BUSY bit should be set to logic 1 to initiate a pause-control frame.
Upon successful transmission of a pause-control frame, the BUSY bit returns to logic 0.
0 = no pause-control frame currently being transmitted (default)
1 = initiate a pause-control frame
Figure 3. Pause-Control Frame
ETHERNET FRAME
PREAMBLE
SFD
01 80 C2 00 00 01
SOURCE ADDRESS
88 08
00 01
PAUSE TIME (2)
PAD (42
)
CRC-32
(7)
(1)
(6)
(2)
(46)
(4)
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