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2.12.2. Port list

The following table shows the port list of the Cortex-M3/Cortex-M4 AHB5 adapter.

Table 2.23. Cortex-M3/Cortex-M4 AHB5 adapter port list
BlockSignalDirectionDescription
SystemhclkInputClock AHB side
hresetnInputReset for hclk domain

AMBA 3 AHB-Lite Slave Interface

(System/DCode/ICode)

haddrx_s[31:0]InputAddress, configurable width
htransx_s[1:0]InputTransfer type
hsizex_s[2:0]InputSize of the transfer
hwritex_sInputTransfer direction indicator
hreadyx_sInputHREADY feedback from all slaves
hprotx_s[3:0]InputProtection control
hburstx_s[2:0]InputBurst type
hmastlocks_sInput

Locked sequence indicator

Note

Present only on the System interface, not on the DCode or ICode interfaces.

hwdatax_s[31:0]InputWrite data, configurable width
hrdatax_s[31:0]OutputRead data, configurable width
hrespx_s[1:0]OutputTransfer response
hmasterx_s[1:0]Input

Master identifier

Note

Present only on the System interface and DCode interfaces, not on the ICode interface.

M3 Additional AHB-Lite Signals

(System/DCode/ICode)

exreqx_sInput

Exclusive access request

Note

Present only on the System interface and DCode interfaces, not on the ICode interface.

exrespx_sOutput

Exclusive access response

Note

Present only on the System interface and DCode interfaces, not on the ICode interface.

memattrx_s[1:0]InputAdditional memory attributes

AHB5 Master Interface

(System/DCode/ICode)

haddrx_m[31:0]OutputAddress, configurable width
htransx_m[3:0]OutputTransfer type
hsizex_m[2:0]OutputSize of the transfer
hwritex_mOutputTransfer direction indicator
hreadyx_mOutputhready_s feedback to slave from all slaves (HREADY)
hprotx_m[6:0]OutputProtection control
hburstx_m[2:0]OutputBurst type
hmastlockx_mOutput

Locked sequence indicator

Note

Present only on the System interface, not on the DCode or ICode interfaces.

hwdatax_m[31:0]OutputWrite data, configurable width
hexclx_mOutput

Exclusive transfer

Note

Present only on the System and DCode interfaces, not on the ICode interface.

hmasterx_m[1:0]Output

Master identifier, configurable width

Note

Present only on the System and DCode interfaces, not on the ICode interface.

hrdatax_m[31:0]InputRead data, configurable width
hrespx_m[1:0]InputTransfer response
hexokayx_mInput

Exclusive okay (AHB5 only)

Note

Present only on the System and DCode interfaces, not on the ICode interface.

IDAU-Lite Interfaceidauaddr[26:0]OutputAddress to check by IDAU
idaunsInputNon-secure or secure
idauunchkInputUnchecked – accessible both secure and non-secure

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