■ DESCRIPTION
The MB86616 is the LSI for protocol conversion to connect SCSI devices to the IEEE 1394 bus. This LSI integrates a 1394 controller compliant with the IEEE Standard for High Performance Serial Bus (IEEE Std. 1394-1995, or FireWire standard) and an SCSI protocol controller compliant with the SCSI-Fast20 standard on a single chip. It also incorporates the F2MC-16F as a processor for controlling the individual on-chip controllers, providing ease of control.

■ FEATURES
• IEEE 1394 Controller Unit
• Compliant with the IEEE Standard for High Performance Serial Bus (IEEE Std. 1394-1995
• Physical and link layer modules integrated on a single chip
• Two cable ports
• Data transfer rates supported : S100, S200, S400
• Data buffer dedicated to asynchronous transmission/reception
• 2-Kbyte (1/2/4 bank-switchable) , transmission/reception shared data buffer
• 128-byte buffer dedicated to asynchronous transmission and 128-byte buffer dedicated to asynchronous reception
• Automatic separation of the packet header and data upon reception and automatic packetization of information upon transmission
• 32-bit CRC generation and check functions
• Chain transfer function for data transfer sequence
• 4- and 4-conductor cables supported

• SCSI Protocol Controller Unit
• Dedicated to initiator operation
• FAST-20 data transfer (8-bit)
  Synchronous transfer : 20 MBps Max. (Maximum offset value of 15)
  Asynchronous transfer : 5 MBps Max.
• Internal 16-byte FIFO data register
• Totem pole type of Fast20 single-end driver/receiver
• 28-bit transfer byte counter enabling simultaneous transfer of up to 256 Mbytes of data

• F2MC-16F Unit
• Minimum instruction execution time : 40.7 ns (at 24.576 MHz)
• Instruction set optimized for controller applications
• Instruction set supporting high-level languages (including C) and multi tasking

• Miscellaneous
• Supply voltage : 3.3 V and 5 V power supplies
• Package : LQFP-144 (FPT-144P-M08)