CS8900-CQ3 Cirrus Logic, CS8900-CQ3 Datasheet - Page 61

• Manufacturer Part Number: CS8900-CQ3
• Description: Crystal LAN ISA Ethernet Controller
• Manufacturer: Cirrus Logic

DS271PP3
4.4.14 Register 10: Receiver Miss Counter
(RxMISS, Read-only, Address: PacketPage base + 0130h)
The RxMISS counter (Bits 6 through F) records the number of receive frames that are lost (missed) due to the lack
of available buffer space. If the MissOvfloiE bit (Register B, BufCFG, Bit D) is set, there is an interrupt when RxMISS
increments from 1FFh to 200h. This interrupt provides the host with an early warning that the RxMISS counter should
be read before it reaches 3FFh and starts over (by interrupting at 200h, the host has an additional 512 counts before
RxMISS actually overflows). The RxMISS counter is cleared when read.
010000
MissCount
Register’s value is: 0000 0000 0001 0000
CS8900A
Crystal LAN™ ISA Ethernet Controller
F
7
MissCount
Miss Counter. When reading this register, these bits will be 010000, where the LSB corre-
sponds to Bit 0.
These bits provide an internal address used by the CS8900A to identify this as the Receiver
The upper ten bits contain the number of missed frames.
E
6
D
5
CIRRUS LOGIC PRODUCT DATA SHEET
C
4
MissCount
B
3
010000
A
2
1
9
0
8
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