afs600 Actel Corporation, afs600 Datasheet - Page 128

• Manufacturer Part Number: afs600
• Description: Actel Fusion Programmable System Chips Mixed-signal Family With Optional Arm Support
• Manufacturer: Actel Corporation

Analog Quad ACM Description
Table 2-53
Table 2-53
tables will explain each bit setting and how it corresponds to a particular configuration. After 3.3 V and 1.5 V are
applied to Fusion, Analog Quad configuration registers are loaded with default settings until the initialization and
configuration state machine changes them to user-defined settings.
Table 2-53 • Analog Quad ACM Byte Assignment
2 -1 1 4
Byte
Byte 0
(AV)
Byte 1
(AC)
Byte 2
(AG)
Byte 3
(AT)
Actel Fusion Programmable System Chips
shows the byte assignment within each quad and the function of each bit within each byte. Subsequent
maps out the ACM space associated with configuration of the Analog Quads within the Analog Block.
Bit
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Signal (Bx)
B0[0]
B0[1]
B0[2]
B0[3]
B0[4]
B0[5]
B0[6]
B0[7]
B1[0]
B1[1]
B1[2]
B1[3]
B1[4]
B1[5]
B1[6]
B1[7]
B2[0]
B2[1]
B2[2]
B2[3]
B2[4]
B2[5]
B2[6]
B2[7]
B3[0]
B3[1]
B3[2]
B3[3]
B3[4]
B3[5]
B3[6]
B3[7]
A d v a n c e d v 1 . 4
Selects G-pad polarity
Scaling factor control – prescaler
Analog MUX select
Current monitor switch
Direct analog input switch
Selects V-pad polarity
Prescaler op amp mode
Scaling factor control – prescaler
Analog MUX select
Direct analog input switch
Selects C-pad polarity
Prescaler op amp mode
Internal chip temperature monitor
Spare
Current drive control
Spare
Spare
Selects low/high drive
Scaling factor control – prescaler
Analog MUX select
Direct analog input switch
Prescaler op amp mode
Function
–
Highest voltage range
Prescaler
Off
Off
Positive
Power-down
Highest voltage range
Prescaler
Off
Positive
Power-down
Off
Lowest current
Positive
Low drive
Highest voltage range
Prescaler
Off
Power-down
Default Setting
–
–
–
–