参数资料
型号: CORE10/100-RM
厂商: Microsemi SoC
文件页数: 29/106页
文件大小: 0K
描述: IP CORE10/100 ETHERNET MAC
标准包装: 1
系列: *
Core10100 v4.0
Table 4-4 · Transmit Automatic Polling Intervals
Register Maps
CSR0.(19..17)
000
001
010
011
100
101
110
111
10 Mbps
TAP disabled
819 μs
2,450 μs
5,730 μs
51.2 μs
102.4 μs
153.6 μs
358.4 μs
100 Mbps
TAP disabled
81.9 μs
245 μs
573 μs
5.12 μs
10.24 μs
15.36 μs
35.84 μs
Table 4-5 · Transmit Poll Demand Register (CSR1)
Bits 31:24
Bits 23:16
Bits 15:8
Bits 7:0
TPD(31..24)
TPD(23..16)
TPD(15..8)
TPD(7..0)
Table 4-6 · Transmit Poll Demand Bit Functions
Bit
CSR1.(31..0)
Bits 31:24
Bits 23:16
Bits 15:8
Bits 7:0
Bit
CSR2.(31..0)
Symbol
TPD
Symbol
RPD
Function
Writing this field with any value instructs Core10100 to check for frames to be
transmitted. This operation is valid only when the transmit process is suspended.
If no descriptor is available, the transmit process remains suspended.
When the descriptor is available, the transmit process goes into the running state.
Table 4-7 · Receive Poll Demand Register (CSR2)
RPD(31..24)
RPD(23..16)
RPD(15..8)
RPD(7..0)
Table 4-8 · Receive Poll Demand Bit Functions
Function
Writing this field with any value instructs Core10100 to check for receive descriptors to
be acquired. This operation is valid only when the receive process is suspended.
If no descriptor is available, the receive process remains suspended.
When the descriptor is available, the receive process goes into the running state.
v4.0
29
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