Asp Control Register; Table 15-7 Control Register Description - Motorola DragonBall MC9328MX1 Reference Manual

15.5.1 ASP Control Register

The Control Register determines the configuration of PADC block.
ASP_ACNTLCR
BIT 31 30 29
TYPE r r r
0 0 0
RESET
BIT 15 14 13
AZE AUTO MOD
TYPE rw rw rw
0 0 0
RESET
Name
Reserved Reserved—These bits are reserved and should read 0.
Bits 31–28
ASWB Auto Mode Switch Bypass—Controls the switch settings
Bit 27 in Auto XY mode with AZ off. When enabled, switch settings
take the value of SW[7...0], otherwise is determined by
internal logic. This is only for ATE test (debug) purpose.
ACAL Auto Mode Calibration—Enables/Disables switch settings
Bit 26 for auto-calibration in auto-ZXY mode. Switch settings for X
/ Y are changed from C6 / 39, to CC / 33 respectively.
CLKEN Clock Enable—Enables/Disables the clock into the Pen
Bit 25 ADC clock generator. This is used to save power when the
Pen ADC is not in use.
Reserved Reserved—This bit is reserved and should read 0.
Bit 24
SWRST Software Reset—Resets the entire ASP module. All ASP
Bit 23 registers will be restored to default value upon reset.
Reserved Reserved—This bit is reserved and should read 0.
Bit 22
U_SEL U-Channel Resistor Selection—Selects which external
Bit 21 resistor to use for U-channel measurement.
MOTOROLA
Control Register
28 27 26 25 24
ASW ACA
CLKEN
B L
r rw rw rw
0 0 0 1
12 11 10 9
SW8 SW7 SW6 SW5
rw rw rw rw rw
0 0 0 0
Table 15-7. Control Register Description
Description
Analog Signal Processor (ASP)
23 22 21
SWRST U_SEL AZ_SEL
r rw r rw
0 0 0 0
0x0200
8 7 6 5
SW4 SW3 SW2
rw rw rw
0 0 0 0
0x0000
1 = Bypass enable. Switches are
0 = Bypass disable. Switches are
1 = Enable
0 = Disable
0 = Disable clock into the ADC
1 = Enable clock into Pen ADC
0 = No effect
1 = Reset -This automatically
0 = Resistor at UIN and UIP pins
1 = Resistor at R1a and R2a pins
Programming Model
Addr
0x00215010
20 19 18 17
rw r r r
0 0 0 0
4 3 2 1
SW1 PADE BGE
rw r r rw
0 0 0 0
Settings
set by SW[7:0]
set by internal logic
clock generator
clock generator
restores to 0
16
r
0
0
rw
0
15-9