Страница 1 мировой engineering стандарты общая спецификация

P
roduct 
M
emory 
A
ddress
(PMA) bit of the HFI is set to a one. If present, this field is
one byte in length if the H_N
Size 
bit of the HFI is 0, and two
bytes in length if the H_Nsize bit of the HFI is 1. This field
contains the 
N
umber 
O
f 
A
ddress 
R
egions (
NOAR
) within the
software/calibration module. This field is used to
accommodate programming of a software or calibration
module that has data that is broken up into separate memory
regions in the ECU. The number in this field represents the
number of different address regions addressed when the
module is downloaded.
U
End of
previous
field
+ 1
4
PMA#1
This optional field contains the starting PMA of the first (or
only) Address Region where the module is loaded. This is an
optional field which is present only if the HFI indicates that
PMA is used. If the product uses less than four bytes for
addressing, then the most significant byte(s) shall be set to
$00.
U
End of
previous
field
+ 1
4
NOB#1
This optional field contains the 
n
umber 
o
f 
b
ytes to be sent
starting with the address from the previous field.
U
End of
previous
field
+ 1
4
PMA#2
This optional field is present if the PMA bit of the HFI is set to
a one and the NOAR field indicates that more than one
address region is contained within the module. If present, this
field contains the starting address of the 2
nd 
memory region.
U
End of
previous
field
+ 1
4
NOB#2
This optional field is present if the PMA bit of the HFI is set to
a one and the NOAR field indicates that more than one
address region is contained within the module. If present this
field contains the