参数资料
型号: 78Q8430EBST#DB
厂商: Maxim Integrated Products
文件页数: 52/88页
文件大小: 0K
描述: EVAL BOARD 78Q8430
标准包装: 1
系列: *
78Q8430 Data Sheet
DS_8430_001
56
Rev. 1.2
7.5
QUE Registers
7.5.1
Packet Control Word Register
Name: PCWR
Reset Val: 0x0000_0000
Block: QUE
Address: 0x000
Bits
Type
Default
Description
31:30
X
Reserved
29:25
WO
N/A
Preload
The number of bytes to pre-load into the MAC TX FIFO before the
frame begins transmission to the PHY. This may need to be non-zero
for large IP headers that want to have the checksum inserted to ensure
the checksum is not transmitted before the end of the header is loaded.
24:16
WO
N/A
Packet ID
The 9-bit ID value used to identify this packet in the TX status FIFO.
15:10
WO
N/A
IP Header Offset
Offset in bytes to the IP header in this frame. If this value is non-zero
then the IP header checksum will be corrected.
9
WO
N/A
Append CRC
When set, the transmitter shall append the correct CRC checksum to
the end of the frame.
8
WO
N/A
Fix CRC
When set, the transmitter shall correct the existing CRC checksum on
the end of the packet.
7
X
Reserved
6
WO
N/A
Disable Padding
For small packets (<64 Bytes).
5
WO
N/A
Late Notify
Interrupt on completion.
4
WO
N/A
Early Notify
Interrupt at beginning of transmission.
3
WO
N/A
Interrupt on excessive collisions.
2
WO
N/A
Disable deferral timeout.
1
WO
N/A
Enable fast back-off timer.
0
X
Reserved
7.5.2
Packet Size Register
Name: PSZR
Reset Val: 0x0000_0000
Block: QUE
Address: 0x004
Bits
Type
Default
Description
31:16
X
Reserved
15:0
RW
0000
Packet Size
The size, in bytes, of the packet that will be added to the QUE.
相关PDF资料
PDF描述
CM453232-R18KL INDUCTOR 180NH 700MA SMD
REC15-1205D/H3 CONV DC/DC 15W 12VIN +/-05VOUT
VI-JWL-EZ-F3 CONVERTER MOD DC/DC 28V 25W
A3BKB-2406G IDC CABLE- ASR24B/AE24G/APK24B
REC15-2415D/H3 CONV DC/DC 15W 24VIN +/-15VOUT
相关代理商/技术参数
参数描述
78Q8430STEM#DB 功能描述:以太网开发工具 3-in-1 Silicon Delay Line RoHS:否 制造商:Micrel 产品:Evaluation Boards 类型:Ethernet Transceivers 工具用于评估:KSZ8873RLL 接口类型:RMII 工作电源电压:
78-R3 功能描述:3M SCOTCHCAST REENTERABLE SIGNAL 制造商:3m 系列:* 零件状态:在售 标准包装:1
78-R4 功能描述:3M SCOTCHCAST REENTERABLE SIGNAL 制造商:3m 系列:* 零件状态:在售 标准包装:1
78RB02 功能描述:SWITCH 2 POS DIP RECESSED UNSLD RoHS:否 类别:开关 >> DIP 系列:78 特色产品:RDM Series Rotary DIP Switch 标准包装:70 系列:RDM 电路:十六进制 位置数:16 触点额定电压:0.1A @ 42VDC 触动器类型:用于工具旋转 触动器电平:凹槽式 安装类型:通孔 方向:顶部触动 可清洗:是 其它名称:EG4977-5RDMAR16PIT
78RB02RA 制造商:Grayhill 功能描述:DIP, 2 POS, FLUSH ACTUATOR, SPST, GOLD - Rail/Tube