r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 891

• Manufacturer Part Number: r5s77631ay266bgv
• Description: Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series
• Manufacturer: Renesas Electronics Corporation.

23.3.13 Lost Carrier Counter Register (LCCR)
LCCR is a 16-bit counter that indicates the number of times the carrier was lost during data
transmission. When the value in this register reaches H'0000FFFF, count-up is halted. This
register is cleared to 0 when it is read with the TRCCM bit in ECMR set to 1. When the TRCCM
bit in ECMR is 0, this register is cleared to 0 by writing H'11111111.
Bit
31 to 16
15 to 0
Initial value:
Initial value:
R/W:
R/W:
Bit:
Bit:
Bit Name

LCC[15:0]
R/W
31
15

R
0
0
R/W
30
14

R
0
0
R/W
29
13

R
0
0
Initial
Value
All 0
All 0
R/W
28
12

R
0
0
R/W
27
11
R/W
R
R/W

R
0
0
R/W
26
10

R
0
0
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
Lost Carrier Count
These bits indicate the number of times the carrier was
lost during data transmission.
R/W
25

R
0
9
0
R/W
24

R
0
8
LCC[15:0]
0
Section 23 Gigabit Ethernet Controller (GETHER)
R/W
23

R
0
7
0
R/W
Rev. 1.00 Oct. 01, 2007 Page 825 of 1956
22

R
0
6
0
R/W
21

R
0
5
0
R/W
20

R
0
4
0
R/W
19

R
0
3
0
REJ09B0256-0100
R/W
18

R
0
2
0
17

R
0
1
0
R/W
16

R
0
0
0