IXF1104
Table 116. RX FIFO High Watermark Port 3 ($0x583)
Bit | Name | Description | Type1 | Default | |
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Register Description: The default value of 0x0E6 represents 230 |
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equates to 1840 bytes of data. A unit entry in this register equates to 8 bytes of data. When the | 0x0E6 | ||||
amount of data stored in the RX FIFO exceeds the high watermark, flow control is |
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automatically initiated within the MAC to avoid an overflow condition. |
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31:12 | Reserved | Reserved | RO | 0x00000 | |
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| RX FIFO High | The high water mark value. |
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11: 0 | NOTE: Must be greater than the RX FIFO Low | R/W | 0x0E6 | ||
Watermark Port 3 | |||||
| Watermark and RX FIFO transfer threshold. |
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1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No clear; R/W/C = Read/Write, Clear on Write
Table 117. RX FIFO Low Watermark Port 0 ($0x58A)
Bit | Name | Description | Type1 | Default | |
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Register Description: The default value of 0x072 represents 114 |
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equates to 912 bytes of data. A unit entry in this register equates to 8 bytes of data. When the |
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amount of data stored in the RX FIFO falls below the Low Watermark, flow control is |
| 0x072 | |||
automatically |
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RX FIFO. |
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31:12 | Reserved | Reserved | RO | 0x00000 | |
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| RX FIFO Low | The High Watermark value |
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11: 0 | NOTE: Should never be greater or equal to the | R/W | 0x072 | ||
Watermark Port 0 | |||||
| High Watermark. |
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1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No clear; R/W/C = Read/Write, Clear on Write
Table 118. RX FIFO Low Watermark Port 1 ($0x58B)
Bit | Name | Description | Type1 | Default | |
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Register Description: The default value of 0x072 represents 114 |
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equates to 912 bytes of data. A unit entry in this register equates to 8 bytes of data. When the |
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amount of data stored in the RX FIFO falls below the Low Watermark, flow control is |
| 0x072 | |||
automatically |
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RX FIFO. |
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31:12 | Reserved | Reserved | RO | 0x00000 | |
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| RX FIFO Low | The High Watermark value |
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11: 0 | NOTE: Should never be greater or equal to the | R/W | 0x072 | ||
Watermark Port 1 | |||||
| High Watermark. |
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1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No clear; R/W/C = Read/Write, Clear on Write
Datasheet | 193 |
Document Number: 278757
Revision Number: 007
Revision Date: March 25, 2004