mu9c8338a Music Semiconductors, Inc., mu9c8338a Datasheet - Page 5

• Manufacturer Part Number: mu9c8338a
• Description: Mu9c8338a 10/100mb Ethernet Filter Interface
• Manufacturer: Music Semiconductors, Inc.

INCR (Increment Time Stamp Counters, Input, TTL)
Host Processor Interface
/PCS (Processor Port Chip Select, Input, TTL)
/PCSS (Processor Port Chip Select System, Input, TTL)
Table 2: /INTR Settings
Rev. 0a
Register Required to
Select Interrupt
Condition
PTARG
STARG
To clear /INTR, Read
RSTAT. Please note that /INTR will only return
HIGH when all possible result data has been read.
SSTAT. Please note that /INTR will only return
HIGH when the LANCAM has become not full.
Therefore, after the SSTAT register read has
confirmed the status of the interrupt condition, an
entry should be removed from the LANCAM by
using the PURGE sequence.
5
/WRITE (Processor Port Read/Write, Input, TTL)
A[7:0] (Processor Port Address, Input, TTL)
D[15:0] (Processor Port Data, Input/Output, Tri-state,
TTL)
PROC_RDY (Processor Port Ready, Output, Tri-state,
TTL)
/INTR (Processor Interrupt, Output, TTL)
Interrupt Condition
The MII port has parsed an incoming packet. The DA lookup
has been performed and the result data is available to be
read from RDAT register.
The /FF output from the LANCAM(s) has indicated that the
LANCAM is full. When reading the SSTAT register, a full
condition is indicated by bit 0 = 0.