Wbtyp - Intel 82496 CACHE CONTROLLER User Manual

HARDWARE INTERFACE
5.2.2.145.
WBTYP
WBTYP Write Back Cycle Type
Indicates a replacement or snoop write back cycle,
Output from 82496 Cache Controller (pin P16), Input to 82491 Cache SRAM (pin
37)
Synchronous to ClK
Signal Description
WBTYP indicates the type of write back cycle to the 82491 Cache SRAM, This signal is used
by the 82491 Cache SRAM to detennine which buffer it will load the data to be written back
into (either the snoop write back buffer or the replacement write back buffer),
If
WBTYP is driven high for snoop write back cycles, and low for replacement write back
cycles,
Relation to Other Signals
Pin Symbol Relation to Other Signals
lRO WBTYP shares a pin with the configuration signal lRO,
WBWE# WBA and WBTYP are sampled by the 82491 Cache SRAM with WBWE#,
5-215