MA330013 Microchip Technology, MA330013 Datasheet - Page 199

• Manufacturer Part Number: MA330013
• Description: MODULE PLUG-IN DSPIC33 100TQFP
• Manufacturer: Microchip Technology

Specifications of MA330013

• Accessory Type: Plug-In Module (PIM) - dsPIC33FJ256MC710
• Tool / Board Applications: General Purpose MCU, MPU, DSP, DSC
• Mcu Supported Families: DsPIC33
• Silicon Manufacturer: Microchip
• Core Architecture: DsPIC
• Core Sub-architecture: DsPIC33
• Silicon Core Number: DsPIC33F
• Silicon Family Name: DsPIC33FJxxMCxxx
• Rohs Compliant: Yes
• For Use With: DM330023 - BOARD DEV DSPICDEM MCHV
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: Explorer 16 (DM240001 or DM240002)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Not applicable / Not applicable

16.0
This section describes the Quadrature Encoder Inter-
face (QEI) module and associated operational modes.
The QEI module provides the interface to incremental
encoders for obtaining mechanical position data.
FIGURE 16-1:
© 2007 Microchip Technology Inc.
Note:
UPDN
INDX
QEA
QEB
QUADRATURE ENCODER
INTERFACE (QEI) MODULE
This data sheet summarizes the features
of this group of dsPIC33F devices. It is not
intended to be a comprehensive reference
source. To complement the information in
this data sheet, refer to the “dsPIC30F
Family Reference Manual” (DS70046).
Synchronize
Sleep Input
Det
PCDOUT
UPDN_SRC
QUADRATURE ENCODER INTERFACE BLOCK DIAGRAM
Programmable
Programmable
0
1
Programmable
0
1
Digital Filter
Digital Filter
Digital Filter
QEICON<11>
Existing Pin Logic
Up/Down
3
QEIM<2:0>
T
CY
Interface Logic
Quadrature
TQCS
Encoder
1
0
Mode Select
QEIM<2:0>
Preliminary
3
TQGATE
1
0
2
The operational features of the QEI include:
• Three input channels for two phase signals and
• 16-bit up/down position counter
• Count direction status
• Position Measurement (x2 and x4) mode
• Programmable digital noise filters on inputs
• Alternate 16-bit Timer/Counter mode
• Quadrature Encoder Interface interrupts
These operating modes are determined by setting the
appropriate
Figure 16-1 depicts the Quadrature Encoder Interface
block diagram.
index pulse
16-bit Up/Down Counter
Max Count Register
D
CK
Comparator/
Zero Detect
(POSCNT)
(MAXCNT)
TQCKPS<1:0>
Q
Q
1, 8, 64, 256
Prescaler
bits,
2
QEIM<2:0>
Reset
Equal
dsPIC33F
DS70165E-page 197
(QEICON<10:8>).
QEIIF
Event
Flag