Altera RapidIO II MegaCore Function - Manual (Page 70)

4–28 Chapter 4: Functional Description
Logical Layer Interfaces
RapidIO II MegaCore Function August 2014 Altera Corporation
User Guide
1 0000_0000_0001_0000 0 0011 0
1 0000_0000_0010_0000 0 0010 0
1 0000_0000_0100_0000 0 0001 0
1 0000_0000_1000_0000 0 0000 0
1 0000_0001_0000_0000 1 0011 1
1 0000_0010_0000_0000 1 0010 1
1 0000_0100_0000_0000 1 0001 1
1 0000_1000_0000_0000 1 0000 1
1 0001_0000_0000_0000 0 0011 1
1 0010_0000_0000_0000 0 0010 1
1 0100_0000_0000_0000 0 0001 1
1 1000_0000_0000_0000 0 0000 1
1 0000_0000_0000_0011 1 0110 0
1 0000_0000_0000_1100 1 0100 0
1 0000_0000_0011_0000 0 0110 0
1 0000_0000_1100_0000 0 0100 0
1 0000_0011_0000_0000 1 0110 1
1 0000_1100_0000_0000 1 0100 1
1 0011_0000_0000_0000 0 0110 1
1 1100_0000_0000_0000 0 0100 1
1 0000_0000_0000_1111 1 1000 0
1 0000_0000_1111_0000 0 1000 0
1 0000_1111_0000_0000 1 1000 1
1 1111_0000_0000_0000 0 1000 1
1 0000_0000_1111_1111 0 1011 0
1 1111_1111_0000_0000 0 1011 1
1 1111_1111_1111_1111 1 1011 0
Note to Table 4–10 :
(1) For read transfers, the I/O Logical layer slave module does not handle byteenable values and byteenable-burstcount
combinations that the Avalon-MM interface does not allow. In case of an invalid combination, the RapidIO II IP core
asserts the ios_rd_wr_readresponse signal when it asserts the ios_rd_wr_readdatavalid signal, and sets the
INVALID_READ_BYTEENABLE
bit of the I/O Slave Interrupt register ( Table 6–60 on page 6–40 ) if this
interrupt is enabled in the I/O Slave Interrupt Enable register ( Table 6–61 on page 6–41 ).
Table 4–10. I/O Logical Layer Slave Read or Write Request Size Encoding I (Part 2 of 2)
Avalon-MM Signal Values (1) RapidIO Header Field Values
burstcount
(5'dx,
128-bit units)
byteenable
(16'bxxxx_xxxx_xxxx_xxxx)
wdptr
(1'bx)
rdsize or
wrsize
(4'bxxxx)
address[0]
(rio_addr[3])