Receive Message Counter Register; Table 22-34. Rmc Register; Table 22-35. Rmc Register Definitions - Sharp Blue Treak LH75400 User Manual

Controller Area Network

22.3.2.19 Receive Message Counter Register

RMC is the Receive Message Counter Register. The RMC Register records the number
of messages currently available in the Receive FIFO. It increments automatically with each
Receive event and decrements with each Release Receive Buffer command. It is available
for Read Only access in both Operating Mode and Reset Mode.
The register is reset to 00h by either a System Reset or a Software Reset.
BIT
FIELD
RESET
RW
BIT
FIELD
RESET
RW
ADDR
BIT
31:8
7:0
22-28

Table 22-34. RMC Register

31 30 29 28 27
0 0 0 0 0
R R R R R
15 14 13 12 11
0 0 0 0 0
R R R R R

Table 22-35. RMC Register Definitions

NAME
Reserved Writing to these bits has no effect. Reading returns 0.
///
Receive FIFO Messages Specifies the number of messages cur-
RMC.4 - RMC.0
rently available in the Receive FIFO.
LH75400/01/10/11 (Preliminary) User's Guide
26 25 24 23 22
///
0 0 0 0
R R R R R
10 9 8 7
///
0 0 0 0
R R R R R
0xFFFC5000 + 0x74
DESCRIPTION
6/17/03
21 20 19 18
0 0 0 0 0
R R R R
6 5 4 3 2
0 0 0 0 0
R R R R
17 16
0 0
R R
1 0
0 0
R R