Preliminary User’s Manual A14874EJ3V0UM
25
CHAPTER 2 PIN FUNCTIONS
2.1 List of Pin Functions
(1/4)
Pin Name
I/O
Function
VPA13 to VPA0
Output
Address output for peripheral macro connected to NPB
VPDI15 to VPDI0
Note
Input
Data input from peripheral macro connected to NPB
VPDO15 to VPDO0
Output
Data output to peripheral macro connected to NPB
VPWRITE
Output
Write access strobe output
VPSTB
Output
Data strobe output
VPLOCK
Output
Bus lock output
VPUBENZ
Output
Upper byte enable output
VPRETR
Note
Input
Retry request input from peripheral macro connected to NPB
VPDACT
Input
Active level input from external address decoder
NPB pins
VPDV
Output
Data output (VPDO15 to VPDO0) control output
VAREQ
Input
Bus access right request input from external bus master
VAACK
Output
Bus access right acknowledge output
VAPREQ
Output
Bus access right request output from internal bus master (CPU,
DMAC)
VBDI31 to VBDI0
Input
Data input from macro connected to VSB
VBDO31 to VBDO0
Output
Data output to macro connected to VSB
VMA27 to VMA0
Output
Address output to macro connected to VSB
VMTTYP1, VMTTYP0
Output
Bus transfer type output
VMSTZ
Output
Transfer start output
VMBENZ3 to VMBENZ0
Output
Byte enable output
VMSIZE1, VMSIZE0
Output
Transfer size output
VMWRITE
Output
Read/write status output
VMLOCK
Output
Bus lock output
VMCTYP2 to VMCTYP0
Output
Bus cycle status output
VMSEQ2 to VMSEQ0
Output
Sequential status output
VMBSTR
Output
Burst read status output
VMWAIT
Input
Wait response input
VMLAST
Input
Last response input
VMAHLD
Input
Address hold response input
VDSELPZ
Output
Peripheral I/O area access status output
VSA13 to VSA0
Input
Address input from macro connected to VSB
VSSTZ
Input
Transfer start input
VSBENZ1
Input
Byte enable input
VSB pins
VSWRITE
Input
Read/write status input
Note
Connected internally to bus holder.
