DSPIC33FJ64MC508 Microchip Technology Inc., DSPIC33FJ64MC508 Datasheet - Page 192

• Manufacturer Part Number: DSPIC33FJ64MC508
• Description: High-performance, 16-bit Digital Signal Controllers
• Manufacturer: Microchip Technology Inc.

dsPIC33FJXXXMCX06/X08/X10 MOTOR CONTROL FAMILY
REGISTER 16-1:
DS70287A-page 190
bit 4-3
bit 2
bit 1
bit 0
TQCKPS<1:0>: Timer Input Clock Prescale Select bits
11 = 1:256 prescale value
10 = 1:64 prescale value
01 = 1:8 prescale value
00 = 1:1 prescale value
(Prescaler utilized for 16-bit timer mode only)
POSRES: Position Counter Reset Enable bit
1 = Index Pulse resets Position Counter
0 = Index Pulse does not reset Position Counter
(Bit only applies when QEIM<2:0> = 100 or 110)
TQCS: Timer Clock Source Select bit
1 = External clock from pin QEA (on the rising edge)
0 = Internal clock (TCY)
UPDN_SRC: Position Counter Direction Selection Control bit
1 = QEB pin state defines Position Counter direction
0 = Control/status bit UPDN (QEICON<11>) defines Position Counter (POSCNT) direction
Note:
QEICON: QEI CONTROL REGISTER (CONTINUED)
When configured for QEI mode, control bit is a ‘don’t care’.
© 2007 Microchip Technology Inc.