NEC V850E/IA1 mPD703116 User Manual page 639

(5) DMA destination address setting register DL (NBDMDL)
NBDMDL register specifies a DMA destination address.
It can be written from the NBD tool and read by DMA (CPU).
It can be read only in 16-bit units.
15 14 13 12
NBDMDL AD15 AD14 AD13 AD12
Remarks 1. When writing RAM using the NBD tool, an address signal from the NBD tool can be read from
the NBDMDL register by DMA (CPU).
2. When reading RAM using the NBD tool, the NBDL register value can be read from the NBDMDL
register by DMA (CPU).
(6) DMA destination address setting register DH (NBDMDH)
NBDMDH register specifies a DMA destination address.
It can be written from the NBD tool and read by DMA (CPU).
It can be read only in 16-bit units.
15 14 13 12
NBDMDH IR 0 0 0
Bit Position Bit Name
15 IR
Remarks 1. When writing RAM using the NBD tool, an address signal from the NBD tool can be read from
the NBDMDH register by DMA (CPU).
2. When reading RAM using the NBD tool, the NBDL register value can be read from the NBDMDH
register by DMA (CPU).
CHAPTER 12 NBD FUNCTION ( µ µ µ µ PD70F3116)
11 10 9 8 7 6
AD11 AD10 AD9 AD8 AD7 AD6
11 10 9 8 7 6
AD27 AD26 AD25 AD24 AD23 AD22
Shows read or write status when NBD accesses internal RAM of the V850E/IA1.
0: NBD is read accessing RAM
1: NBD is write accessing RAM
User's Manual U14492EJ3V0UD
5 4 3 2 1 0
AD5 AD4 AD3 AD2 AD1 AD0
5 4 3 2 1 0
AD21 AD20 AD19 AD18 AD17 AD16
Function
Address Initial value
FFFFFA68H Undefined
Address Initial value
FFFFFA6AH Undefined
639