Table 6-52. Excol Register; Table 6-53. Exccol Fields; Table 6-54. Txunder Register; Table 6-55. Txunder Fields - Sharp LH79524 User Manual

Ethernet MAC Controller

6.3.3.10 Excessive Collisions (EXCOL)

This register compiles the number of frames not transmitted due to more than 16 collisions
occuring during transmission attempts.
BIT
FIELD
RESET
TYPE
BIT
FIELD
RESET
TYPE
ADDR
BITS
31:8
7:0
6.3.3.11 Transmit Underrun Errors (TXUNDER)
This register
BIT
FIELD
RESET
TYPE
BIT
FIELD
RESET
TYPE
ADDR
BITS
31:8
7:0
6-42

Table 6-52. EXCOL Register

31 30 29 28 27
0 0 0 0 0
RO RO RO RO RO
15 14 13 12 11
///
0 0 0 0 0
RO RO RO RO RO

Table 6-53. EXCCOL Fields

NAME
///
Reserved Reading returns 0. Write the reset value.
Excessive Collisions Number of frames that were not transmitted
EXCCOL
because they experienced 16 collisions.
compiles the number of frames not transmitted due to a transmit DMA underrun.

Table 6-54. TXUNDER Register

31 30 29 28 27
0 0 0 0 0
RO RO RO RO RO
15 14 13 12 11
///
0 0 0 0 0
RO RO RO RO RO

Table 6-55. TXUNDER Fields

NAME
/// Reserved Reading returns 0. Write the reset value.
Transmit Underruns Number of frames not transmitted due to a
TXUNDER transmit DMA underrun. If this register is incremented, no other
statistics register is incremented.
26 25 24 23
///
0 0 0 0
RO RO RO RO
10 9 8 7
0 0 0 0
RO RO RO RW
0xFFFC7000 + 0x60
FUNCTION
26 25 24 23
///
0 0 0 0
RO RO RO RO
10 9 8 7
0 0 0 0
RO RO RO RW
0xFFFC7000 + 0x64
FUNCTION
Version 1.0
LH79524/LH79525 User's Guide
22 21 20 19 18
0 0 0 0 0
RO RO RO RO RO
6 5 4 3 2
EXCCOL
0 0 0 0 0
RW RW RW RW RW
22 21 20 19 18
0 0 0 0 0
RO RO RO RO RO
6 5 4 3 2
TXUNDER
0 0 0 0 0
RW RW RW RW RW
17 16
0 0
RO RO
1 0
0 0
RW RW
17 16
0 0
RO RO
1 0
0 0
RW RW