ZL50404GDC ZARLINK [Zarlink Semiconductor Inc], ZL50404GDC Datasheet - Page 61
ZL50404GDC
Manufacturer Part Number
ZL50404GDC
Description
Lightly Managed/Unmanaged 5-Port 10/100M Ethernet Switch
Manufacturer
ZARLINK [Zarlink Semiconductor Inc]
Datasheet
1.ZL50404GDC.pdf
(121 pages)
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13.2.5
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13.2.6
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13.2.7
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Bit [0]:
Bit [1]:
Bit [2]:
Bit [3]:
Bit [4]:
Bit [5]:
Bit [7:6]:
Bit [0]:
Bit [1]:
Bit [2]:
Bit [6:3]:
Bit [7]:
When the CPU reads this register:
Interrupt sources (8 bits)
Address = 5 (read/write)
CPU transmit/receive control frames (16 bits)
Address = 6 (read/write)
When CPU writes to this register:
When CPU reads this register:
CPU receive control frames (16 bits)
Address = 7 (read only)
When CPU reads this register:
Interrupt Register
Control Command Frame Buffer1 Access Register
Control Command Frame Buffer2 Access Register
Data is written to the Control Command Frame Receive Buffer
Data is read from the Control Command Frame Transmit Buffer1
Data is read from the Control Command Frame Transmit Buffer2
Control Frame receive buffer ready, CPU can write a new frame
1 – CPU can write a new control command 1
0 – CPU has to wait until this bit is 1 to write a new control command 1
Control Frame transmit buffer1 ready for CPU to read
1 – CPU can read a new control command 1
0 – CPU has to wait until this bit is 1 to read a new control command
Control Frame transmit buffer2 ready for CPU to read
1 – CPU can read a new control command 1
0 – CPU has to wait until this bit is 1 to read a new control command
Transmit FIFO has data for CPU to read (TXFIFO_RDY)
Receive FIFO has space for incoming CPU frame (RXFIFO_SPOK)
Transmit FIFO End Of Frame (TXFIFO_EOF)
Reserved
CPU frame interrupt
Control Frame 1 interrupt. Control Frame receive buffer1 has data for CPU to read
Control Frame 2 interrupt. Control Frame receive buffer2 has data for CPU to read
Reserved
Device Timeout Detected interrupt
Note: This bit is not self-cleared. After reading, the CPU has to clear the bit writing 0 to it.
Zarlink Semiconductor Inc.
ZL50404
61
Data Sheet
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