MBL8289
MBL8289 is BIPOLAR BUS ARBITER manufactured by Fujitsu Semiconductor Limited.
MBL 8289 MBL 8289-1
BIPOLAR BUS ARBITER FOR MBl8086/8088/80186/80188/8089
April 1986 Edition 4.0
The Fujitsu MBl 8289 Bus Arbiter is a 20'pin, 5-volt-only bipolar ponent for use with medium to large MBl 8086/8088/ 80186/80188 multi-master/multiprocessing systems. The MBl 8289 provides system bus arbitration for systems with multiple bus masters, sucfl as an MBl8086/8088/80186/80188 CPU with MBl8089 l OP in its REMOTE mode, while providing bipolar buffering and drive capability.
- Provides Multi-Master System Bus Protocol
- Synchronizes MBl 8086/8088/80186/80188/
8089 Processors with Multi-Master Bus: -5MHz, 8MHz (MBl 8086/8088/8089), and 6MHz (MBl 80186/80188) with MBl 8289 -10MHz (MBl 8086/8088) and 8MHz (MBl 80186/80188) with MBl 8289-1
- Provides Simple Interface with MBl 8288 Bus Controllers
- Four Operating Modes for Flexible System Configuration
- patible with Intel Bus Standard MUl TIBUS"
- Provides System Bus Arbitration for MBl 8089 l OP in Remote Mode
- Two Package Options:
- 20-Pin Cerdip (Suffix: -CZ)
- 20-Pin Plastic DIP (Suffix: -PI
Fig. 1
- BLOCK DIAGRAM
MBl80861 { 52
~~t:g:~1 Sf
STATUS SO
1 PROCESSOR l OCK Cl K
CROl CK
CONTROL
RESB
ANYROST l OB
INIT BCl K BREO BPRN BPRO
BUSY CBRO
MUl Tl BUS' MAND SIGNALS
~~;~!~s AEN
}
L __-=::::;;::::::::::::;r:::::::::::::::::::t-SYSB/RESB...
