NEC UPD703116 User Manual page 635

(3) DMA source address setting register SL (NBDMSL)
The NBDMSL register specifies a DMA source 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 12
NBDMSL AD15 AD14 AD13 AD12
Remarks 1. When reading RAM using the NBD tool, an address signal sent from the NBD tool can be read
via the NBDMSL register using the DMA controller (CPU).
2. When writing to RAM using the NBD tool, the NBDL register value can be read via the NBDMSL
register using the DMA controller (CPU).
(4) DMA source address setting register SH (NBDMSH)
The NBDMSH register specifies a DMA source 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 12
NBDMSH IR 0 0 0
Bit position Bit name
15 IR
Remarks 1. When reading RAM using the NBD tool, an address signal sent from the NBD tool can be read
via the NBDMSH register using the DMA controller (CPU).
2. When writing to RAM using the NBD tool, the NBDL register value can be read via the NBDMSH
register using the DMA controller (CPU).
CHAPTER 12 NBD FUNCTION (
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 write accessing RAM
1: NBD is read accessing RAM
User's Manual U14492EJ5V0UD
µ
PD70F3116)
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
FFFFFA64H Undefined
Address Initial value
FFFFFA66H Undefined
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