參數(shù)資料
型號: HMS30C7202
廠商: HYNIX SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-bit ARM7TDMI RISC static CMOS CPU core
中文描述: 32-BIT, 82.944 MHz, RISC PROCESSOR, PBGA256
封裝: 17 X 17 MM, 1.40 MM HEIGHT, 1 MM PITCH, FBGA-256
文件頁數(shù): 68/161頁
文件大?。?/td> 973K
代理商: HMS30C7202
HMS30C7110
2003 MagnaChip Semiconductor Ltd. All Rights Reserved
Version 1.5
68
address, then CRC will be calculated over 48-bit destination address, and 5 most significant bits are
used to locate one of 64 bits of the multicast address register. If the bit to be pointed by the 5 most
significant bits is set, then the frame will be received. With sufficient number of bytes held in the
System Receive FIFO, the DMA engine will start transfer the stored frame to the system memory
space that is pre-programmed by the CPU. An interrupt will be asserted to notify that a frame
transfer is completed and the CPU should write the start address of the next buffer for the next
incoming frame.
In transmit operation, the CPU prepares a frame and notify the MAC that a frame is ready to
transfer. The MAC DMA engine moves the frame from the system memory to System Transmit
FIFO. When the state machine detects there is a frame being stored in the System Transmit FIFO
and that carrier sense is not detected, the frame will be transferred. Pad byte (0x00) may be inserted
if required, and CRC will be appended at the end of the frame. Preamble will be added before the
frame, jam signaling will be asserted when collision occurs. The data stream will be either serialized
for the 7-wire interface or converted to nibbles/bi-bits for MII/RMII.
D
M
A
-
S
Y
S
T
E
M
B
U
S
Frame
Mux
SYS
TX
FIFO
FIFO
CTRL
Pad Insert / Mux
P
H
Y
I
/
F
-
(R)
M
I
I
SFD
Check
MAC
RX
FIFO
FIFO CTRL
SyS
RX
FIFO
CONFIG
STATUS
CRC
CRC
ADDR
TIMER
Figure 2.9 Block Diagram of Ethernet MAC
相關PDF資料
PDF描述
HMS30C7202N Highly-intergrated MPU
HMS81C2012A CMOS Single-Chip 8-Bit Microcontroller with A/D Converter & VFD Driver
HMS81C2012AK CMOS Single-Chip 8-Bit Microcontroller with A/D Converter & VFD Driver
HMS81C2012ALQ CMOS Single-Chip 8-Bit Microcontroller with A/D Converter & VFD Driver
HMS81C2012AQ INDUCTOR*100UH*0.73AMP*0.672OHM*15%*SURFACE MOUNT
相關代理商/技術參數(shù)
參數(shù)描述
HMS30C7202N 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Highly-intergrated MPU
HMS30C7210 制造商:未知廠家 制造商全稱:未知廠家 功能描述:ARM Based 32-Bit Microprocessor
HMS3224M3 制造商:HANBIT 制造商全稱:Hanbit Electronics Co.,Ltd 功能描述:SRAM MODULE 768KBit (32K x 24-Bit)
HMS3224M3-10 制造商:HANBIT 制造商全稱:Hanbit Electronics Co.,Ltd 功能描述:SRAM MODULE 768KBit (32K x 24-Bit)
HMS3224M3-12 制造商:HANBIT 制造商全稱:Hanbit Electronics Co.,Ltd 功能描述:SRAM MODULE 768KBit (32K x 24-Bit)