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Trace RAM Start High Register (0x28) — Read and Write

D15-D4

Unused

Data written to these bits have no effect and always read back as 1.

D3-D0

 

Sets the four most significant bits of the starting address of the Trace

 

RAM, allowing the available RAM to be divided into multiple traces.

 

 

Trace RAM Start Low Register (0x2A) — Read and Write

D15-D0

Sets the 16 least significant bits of the starting address of the Trace RAM, allowing the available RAM to be divided into multiple traces.

Trace RAM End High Register (0x2C) — Read and Write

D15-D4

Unused

Data written to these bits have no effect and always read back as 1.

D3-D0

 

Sets the four most significant bits of the ending address of the Trace

 

RAM, allowing the available RAM to be divided into multiple traces.

 

 

Trace RAM End Low Register (0x2E) — Read and Write

D15-D0

Sets the 16 least significant bits of the ending address of the Trace RAM, allowing the available RAM to be divided into multiple traces.

Trace RAM Address HIGH Register (0x30) — Read and Write

D15-D4

Unused

Data written to these bits have no effect and always read back as 1.

 

 

Sets and reads back the four most significant bits of the current

D3-D0

 

address of the Trace RAM, allowing the current trace RAM address to

 

 

be queried and changed.

Trace RAM Address LOW Register (0x32) — Read and Write

D15-D0

Sets and reads back the sixteen least significant bits of the current address of the Trace RAM, allowing the current trace RAM address to be queried and changed.

Trace Advance Trigger Select Register (0x34) —Write Only

D15-D8

D7-D0

Sets the TTLTRIG line or lines, which are configured as outputs, and will toggle when Trace Advance condition occurs in the module. D15 corresponds to TTLTRIG7, D14 to TTLTRIG6, … and D8 to TTLTRIG0. Setting a bit to a 1 enables the trigger line, setting a bit to 0 disables the corresponding line. All bits are set to 0 when either a soft or a hard reset is received by the module.

Sets the TTLTRIG line or lines, which are configured as inputs, and will cause a Trace Advance event to occur in the module. D7 corresponds to TTLTRIG7, D6 to TTLTRIG6, … and D0 to TTLTRIG0. Setting a bit to a 1 enables the trigger line, setting a bit to 0 disables the corresponding line. All enabled TTLTRIG lines are OR'd together to allow more than one TTLTRIG line to cause a Trace Advance event to occur. All bits are set to 0 when the module receives either a soft or a hard reset.

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SM7100 Programming

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VXI Microwave Matrix Trace RAM Start High Register 0x28 Read and Write, Trace RAM Start Low Register 0x2A Read and Write