參數(shù)資料
型號: ZL50418
廠商: Zarlink Semiconductor Inc.
英文描述: Managed 16-Port 10/100 M + 2-Port 1 G Ethernet Switch
中文描述: 管理16端口10/100平方米端口1個G以太網(wǎng)交換機
文件頁數(shù): 60/163頁
文件大?。?/td> 2122K
代理商: ZL50418
ZL50418
Data Sheet
60
Zarlink Semiconductor Inc.
14.2 Directly Accessed Registers
14.2.1 INDEX_REG0
Address bits [7:0] for indirectly accessed register addresses
Address = 0 (write only)
14.2.2 INDEX_REG1 (only needed for 8-bit mode)
Address bits [15:8] for indirectly accessed register addresses
Address = 1 (write only)
14.2.3 DATA_FRAME_REG
Data of indirectly accessed registers. (8 bits)
Address = 2 (read/write)
14.2.4 CONTROL_FRAME_REG
CPU transmit/receive switch frames. (8/16 bits)
Address = 3 (read/write)
Format:
- Send frame from CPU: In sequence)
-
Frame Data (size should be in multiple of 8-byte)
-
8-byte of Frame status (Frame size, Destination port #, Frame O.K. status)
- CPU Received frame: In sequence)
-
8-byte of Frame status (Frame size, Source port #, VLAN tag)
-
Frame Data
14.2.5 COMMAND&STATUS Register
CPU interface commands (write) and status
Address = 4 (read/write)
When the CPU
writes
to this register
Bit [0]:
Set Control Frame Receive buffer ready, after CPU writes a complete frame
into the buffer. This bit is self-cleared.
Bit [1]:
Set Control Frame Transmit buffer1 ready, after CPU reads out a complete
frame from the buffer. This bit is self-cleared.
Bit [2]:
Set Control Frame Transmit buffer2 ready, after CPU reads out a complete
frame from the buffer. This bit is self-cleared.
Bit [3]:
Set this bit to indicate CPU received a whole frame (transmit FIFO frame
receive done), and flushed the rest of frame fragment, If occurs. This bit will
be self-cleared.
Bit [4]:
Set this bit to indicate that the following Write to the Receive FIFO is the last
one (EOF). This bit will be self-cleared.
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