Threshold Value Exceeding Discard Cell Count Register (0030H) - NEC mPD98410 User Manual

4.3.17 Threshold value exceeding discard cell count register (0030h)

Register name Address
CTEXTH 0030h
31 30 29
15 14 13
The CTEXTH register indicates the number of cells discarded under the condition specified by the CTENTH
register. Counting is performed when EN of the CTENTH register is "1", and is cleared when the reset signal is
applied to the µ PD98410 and when CL and EN of the CTENTH register are "1".
If a cell is discarded when the count value is "FFFFFFFFh", the CEX bit of the status register is set, an interrupt
request is issued to the microprocessor, the count value is cleared to "00000000h", and counting continues. If the
CEX bit of the INTMASK register is "0", no interrupt request is issued to the microprocessor.
Field Bit
CTEXTH bit [31:0]
152
CHAPTER 4 INTERNAL REGISTERS
Default
0000_0000_0000_0000_0000_0000_0000_0000
28 27 26 25 24
CTEXTH
12 11 10 9 8
CTEXTH
R/W
R/W 00000000h to FFFFFFFFh: Indicates the number of discarded cells.
R/W
R/W
23 22 21 20 19
7 6 5 4 3
Function
18 17 16
2 1 0
Default Value
0000_0000h