Xilinx CAN FD v2.0 Product Manual page 53

Table 2-38: CAN FD RX Message Space (Sequential/FIFO Buffers - RX FIFO-1) (Cont'd)
Start
Name
Address
0x4148-
RB1_1
0x418C
0x4190-
RB2_1
0x41D4
:
:
0x49B8-
RB31_1
0x49FC
:
:
0x52B8-
RB63_1
0x52FC
Notes:
1. Read from uninitialized memory location might return X or invalid data. Asserting a soft or hard reset does not
clear block RAM locations.
2. Message Buffer element resides in RX block RAM. Host should respect read access rules to avoid memory
collisions.
RB*-ID Register (Address Offset + 0x2100, 0x2148 ...0x4100,
0x4148 ...)
Table 2-39: RB ID Register
Bits Name
31:21 ID[28:18]
SRR/RTR/
20
RRS
CAN FD v2.0
PG223 December 5, 2018
Access
RB1 to RB63 Message Space
Read Only
Read Only
Read Only
Read Only
Control/ Default
Status Value
Standard Message ID.
The Identifier portion for a Standard Frame is 11 bits.
Status N/A
These bits indicate the Standard Frame ID.
This field is valid for both CAN and CAN FD Standard and
Extended Frames.
Substitute Remote Transmission Request.
For Extended CAN frames and Extended CAN FD frame this bit
was received at SRR position of the respective frame.
For Standard CAN FD frame this bit was received at RRS
position of the frame.
Status N/A
This bit differentiates between received standard CAN data
frames and standard CAN remote frames as following
• 1 = Indicates that the received message is a Standard
Remote CAN Frame.
• 0 = Indicates that the received message is a Standard Data
CAN Frame.
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Chapter 2: Product Specification
Description
Description
Notes
53
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