RapidIO II Intel® FPGA IP User Guide

ID 683444
Date 9/28/2020
Public
Document Table of Contents

6.3.7.2. Rx Doorbell

Table 172.  Rx Doorbell — Offset: 0x10600
Field Bits Access Function Default
LARGE_SOURCE_ID (MSB) [31:24] RO MSB of the DOORBELL message initiator device ID if the system 8'b0 supports 16-bit device ID.

Reserved if the system does not support 16-bit device ID.

8'h00
SOURCE_ID [23:16] RO Device ID of the DOORBELL message initiator. 8'h00
INFORMATION (MSB) [15:8] RO Received DOORBELL message information field, MSB. 8'h00
INFORMATION (LSB) [7:0] RO Received DOORBELL message information field, LSB. 8'h00
Table 173.  Rx Doorbell Status — Offset: 0x10604
Field Bits Access Function Default
RSRV [31:8] RO Reserved. 24'h0
FIFO_LEVEL [7:0] RO Shows the number of available DOORBELL messages in the Rx FIFO. A maximum of 16 received messages is supported. 8'h00

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