Rev. 1.0, 02/00, page 664 of 1141
26.11.3
Arithmetic Buffer
This buffer stores computational data used in the digital filters. See table 26.14. Write access is
limited to the gain and coefficient data (Z
-1
). The other data is used by hardware. None of the data
can be read.
Table 26.14 Arithmetic Buffer Register Configuration
Buffer Data Length
Arithmetic
Data
Gain or
Coefficient
Processing
Data
16 bits
16 bits
16 bits
Phase
system
Ep
Upn
Upn-1 (Zp
-1
)
Vpn
Tp
Y
Ap
Bp
GKp
Ofp
Ap
×
Epn
Bp
×
Vpn
Speed
system
Es
Xsn
Usn
Usn-1 (Zs
-1
)
Vsn
Ws
As
Bs
GKs
Ofs
As
×
Xsn
Bs
×
Vsn
Error
output
PWM
Legend:
Valid bits
↑
Non-existent bits
Decimal point