Freescale Semiconductor MCF5480 - Manual (Page 138)

MCF548x Reference Manual, Rev. 3
3-34 Freescale Semiconductor
Table 3-18 shows timing for Bcc instructions.
3.7.6 EMAC Instruction Execution Times
Table 3-19 specifies instruction execution times associated with the enhanced multiply-accumulate
(EMAC) execute engine.
2
If predicted correctly by the hardware return stack.
3 If mispredicted by the hardware return stack.
4
If not predicted by the hardware return stack.
Table 3-18. Bcc Instruction Execution Times
Opcode
Branch Cache
Correctly Predicts
Taken
Prediction Table
Correctly Predicts Taken
Predicted
Correctly as
Not Taken
Predicted Incorrectly
bcc 0(0/0) 1(0/0) 1(0/0) 8(0/0)
Table 3-19. EMAC Instruction Execution Times
Opcode y
Effective Address
Rn (An) (An)+ –(An)
(d16,An)
(d16,PC) (d8,An,Xi*SF)
(d8,PC,Xi*SF)
xxx.wl #xxx
mac.l Ry,Rx,ACCx 1(0/0) — — — — — — —
mac.l Ry,Rx,,Rw,ACCx — 1(1/0) 1(1/0) 1(1/0) 1(1/0)
1
— — —
mac.w Ry,Rx,ACCx 1(0/0) — — — — — — —
mac.w Ry,Rx,,Rw,ACCx — 1(1/0) 1(1/0) 1(1/0) 1(1/0)
1
— — —
mov.l y,ACCx 1(0/0) — — — — — — 1(0/0)
mov.l ACCy,ACCx 1(0/0) — — — — — — —
mov.l y,MACSR 8(0/0) — — — — — — 8(0/0)
mov.l y,MASK 7(0/0) — — — — — — 7(0/0)
mov.l y,ACCext01 1(0/0) — — — — — — 1(0/0)
mov.l y,ACCext23 1(0/0) — — — — — — 1(0/0)
mov.l ACCx,x 1(0/0)
2
— — — — — — —
mov.l MACSR,x 1(0/0) — — — — — — —
mov.l MASK,x 1(0/0) — — — — — — —
mov.l ACCext01,x 1(0/0) — — — — — — —
mov.l ACCext23,x 1(0/0) — — — — — — —
msac.l Ry,Rx,ACCx 1(0/0) — — — — — — —
msac.l Ry,Rx,,Rw,ACCx — 1(1/0) 1(1/0) 1(1/0) 1(1/0)
1
— — —
msac.w Ry,Rx,ACCx 1(0/0) — — — — — — —
msac.w Ry,Rx,,Rw,ACCx — 1(1/0) 1(1/0) 1(1/0) 1(1/0) 1 — — —
muls.l y,Dx 4(0/0) 4(1/0) 4(1/0) 4(1/0) 4(1/0) — — —
muls.w y,Dx 4(0/0) 4(1/0) 4(1/0) 4(1/0) 4(1/0) 5(1/0) 4(1/0) 4(0/0)