INTERNAL BLOCK DIAGRAM
INTERNAL BLOCK DIAGRAM
B+
CP1
CP2
VBOOST
5 V SELECT
5 V SWITCH
5 V SUPPLY
5V
B+
5.0 V
Dual Mode
Regulator
Charge Pump
Gate Voltage
Generator
Thermal
Shutdown
B+
BPWM
3.3 V SWITCH
BDCMA
3.3 V
3.3 V Switching
Regulator
Oscillator
VCORE SUPPLY
VCORE
VCORE SELECT
ENC_FILTB
ENC_FILTA
V
CORE
Linear
Regulator
Motor Driver B
B+
BDCMB
APWM
I/V
Converter
ADCMA
AN3/ANALOGIN_B
AN2/ANALOGIN_A
AN1/ANALOGOUT_B
AN0/ANALOGOUT_A
MISO
MOSI
SCLK
CE
A/D
Converter
and
Multiplexer
Motor Driver A
ADCMB
S
A/CDCMA
SA
/CDCMB
Active Clamp
Serial I/O
Step
Motor Driver
S
B/LSOUT1
SB
/LSOUT2
CPWMA/CDCPWM
CPWMB
SS DC Motor Driver
GATEOUT
Gate Driver
RST
Supervisor
Circuitry
DGND
GND
CDCMA/HSOUT1
CDCMB/HSOUT2
Figure 2. 34921 Simplified Internal Block Diagram
34921
2
Analog Integrated Circuit Device Data
Freescale Semiconductor
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
