The Transmit Control register for the ping buffer is a 32-bit read/write register ( This Figure ). This register is used to enable the global interrupt, internal loopback and to initiate transmit transactions. The bit definition of this register is shown in Table: Transmit Control Register (0x07FC) .
Bits |
Name |
Access |
Reset value |
Description |
---|---|---|---|---|
31:5 |
Reserved |
N/A |
N/A |
Reserved |
4 |
Loopback (1) |
Read/Write |
0 |
Internal loopback enable bit
0 – No internal loopback
|
3 |
Interrupt Enable |
Read/Write |
0 |
Transmit Interrupt Enable bit
0 – Disable transmit interrupt
|
2 |
Reserved |
N/A |
N/A |
Reserved |
1 |
Program |
Read/Write |
0 |
AXI Ethernet Lite MAC
address program bit.
|
0 |
Status |
Read/Write |
0 |
Transmit ping buffer status indicator
0 –Transmit ping buffer is ready to accept new frame
|
1. Internal Loopback is supported only in full duplex operation mode. Write to this bit is only valid when, Internal Loopback is enabled from the Vivado IDE options. |