General Specification Electrical Function gmw3110 General Motors Local Area Network Enhanced Diagnostic Test Mode Specification

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