Sharp LH79524 - Excessive Collisions (EXCOL); Table 6-52. EXCOL Register; Table 6-53. EXCCOL Fields; Table 6-54. TXUNDER Register

Ethernet MAC Controller LH79524/LH79525 User’s Guide
6-42 Version 1.0
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.
6.3.3.11 Transmit Underrun Errors (TXUNDER)
This register compiles the number of frames not transmitted due to a transmit DMA underrun.
Table 6-52. EXCOL Register
BIT 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
FIELD ///
RESET 0000000000000000
TYPE RO RO RO RO RO RO RO RO RO RO RO RO RO RO RO RO
BIT 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
FIELD /// EXCCOL
RESET 0000000000000000
TYPE RO RO RO RO RO RO RO RO RW RW RW RW RW RW RW RW
ADDR 0xFFFC7000 + 0x60
Table 6-53. EXCCOL Fields
BITS NAME FUNCTION
31:8 ///
Reserved Reading returns 0. Write the reset value.
7:0 EXCCOL
Excessive Collisions Number of frames that were not transmitted
because they experienced 16 collisions.
Table 6-54. TXUNDER Register
BIT 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
FIELD ///
RESET 0 000000000000000
TYPE RO RO RO RO RO RO RO RO RO RO RO RO RO RO RO RO
BIT 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
FIELD /// TXUNDER
RESET 0 000000000000000
TYPE RO RO RO RO RO RO RO RO RW RW RW RW RW RW RW RW
ADDR 0xFFFC7000 + 0x64
Table 6-55. TXUNDER Fields
BITS NAME FUNCTION
31:8 /// Reserved Reading returns 0. Write the reset value.
7:0 TXUNDER
Transmit Underruns Number of frames not transmitted due to a
transmit DMA underrun. If this register is incremented, no other
statistics register is incremented.