Datasheet

dsPIC33F

bit 4-3 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)

bit 2 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)

bit 1 TQCS: Timer Clock Source Select bit

1 = External clock from pin QEA (on the rising edge)

0 = Internal clock (TCY)

bit 0 UPDN_SRC: Position Counter Direction Selection Control bit

1 = QEB pin State Defines Position Counter Direction

0 = Control/Status bit, UPDN (QEICON<11>), Defines Timer Counter (POSCNT) direction

Note: When configured for QEI mode, control bit is a ‘don’t care’.