NEC UPD703116 User Manual page 636

(5) DMA destination address setting register DL (NBDMDL)
The NBDMDL register specifies a DMA destination address.
This register can be written from the NBD tool and read by the DMA controller (CPU).
This register is read-only, in 16-bit units.
15 14 13
NBDMDL AD15 AD14 AD13
Remarks 1. When writing to RAM using the NBD tool, an address signal sent from the NBD tool can be read
via the NBDMDL register using the DMA controller (CPU).
2. When reading RAM using the NBD tool, the NBDL register value can be read via the NBDMDL
register using the DMA controller (CPU).
(6) DMA destination address setting register DH (NBDMDH)
The NBDMDH register specifies a DMA destination address.
This register can be written from the NBD tool and read by the DMA controller (CPU).
This register is read-only, in 16-bit units.
15 14 13
NBDMDH IR 0 0
Bit position Bit name
15 IR
Remarks 1. When writing to RAM using the NBD tool, an address signal sent from the NBD tool can be read
via the NBDMDH register using the DMA controller (CPU).
2. When reading RAM using the NBD tool, the NBDL register value can be read via the NBDMDH
register using the DMA controller (CPU).
636
CHAPTER 12 NBD FUNCTION (
12 11 10 9 8 7
AD12 AD11 AD10 AD9 AD8 AD7
12 11 10 9 8 7
0 AD27 AD26 AD25 AD24 AD23
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 U14492EJ5V0UD
µ
PD70F3116)
6 5 4 3 2 1
AD6 AD5 AD4 AD3 AD2 AD1
6 5 4 3 2 1
AD22 AD21 AD20 AD19 AD18 AD17
Function
0 Address Initial value
AD0 FFFFFA68H Undefined
0 Address Initial value
AD16 FFFFFA6AH Undefined