Table 130 Fddr Ahb Slave Interface Signals - Microchip Technology Microsemi SmartFusion2 User Manual

Fabric DDR Subsystem
Table 129 • FDDR AXI Slave Interface Signals (continued)
Signal Name Direction Polarity Description
AXI_S_AWVALID Input
AXI_S_BREADY Input
AXI_S_RREADY Input
AXI_S_WDATA[63:0] Input
AXI_S_WID[3:0] Input
AXI_S_WLAST Input
AXI_S_WSTRB[7:0] Input
AXI_S_WVALID Input
4.5.2.2 AHB Slave
The following table describes the FDDR AHB slave interface signals. These signals are available only if
FDDR interface is configured for single or dual AHB mode. For more details of AHB protocol refer to
AMBA AHB v3.0 protocol
Table 130 • FDDR AHB Slave Interface Signals
Signal Name
AHBx_S_HREADYOUT
AHBx_S_HRESP
AHBx_S_HRDATA[31:0]
AHBx_S_HSEL
AHBx_S_HADDR[31:0]
AHBx_S_HBURST[2:0]
AHBx_S_HSIZE[1:0]
High Indicates whether valid write address and control information are
available.
1: Address and control information available
0: Address and control information not available
High Indicates whether the master can accept the response information.
1: Master ready
0: Master not ready
High Indicates whether the master can accept the read data and response
information.
1: Master ready
0: Master not ready
Indicates write data.
Indicates response ID. The identification tag of the write response.
High Indicates the last transfer in a write burst.
Indicates which byte lanes to update in memory.
High Indicates whether valid write data and strobes are available.
1: Write data and strobes available
0: Write data and strobes not available
specification.
Direction Polarity Description
Output High Indicates that a transfer has finished on the bus. The signal is
asserted LOW to extend a transfer. Input to Fabric master.
Output High Indicates AHB transfer response to Fabric master.
Output Indicates AHB read data to Fabric master.
Input High Indicates AHB slave select signal from Fabric master.
Input Indicates AHB address initiated by Fabric master.
Input Indicates AHB burst type from Fabric master.
000: Single burst
001: Incrementing burst of undefined length
010: 4-beat wrapping burst
011: 4-beat incrementing burst
100: 8-beat wrapping burst
101: 8-beat incrementing burst
110: 16-beat wrapping burst
111: 16-beat incrementing burst
Input Indicates AHB transfer size from Fabric master.
00: 8 Byte
01: 16 Halfword
10: 32 Word
Microsemi ProprietaryUG0446 User Guide Revision 7.0 143