NXP Semiconductors MPC5644A, Reference Manual, Page: 744 / 1735

Reaction Module (REACM)
MPC5644A Microcontroller Reference Manual, Rev. 6
744 Freescale Semiconductor
modulation address programmed in the channel when the cycle was initiated. In this case a loop in the
Modulation Bank is created. This loop ends when the cycle ends.
Figure 23-41 shows the sequence of Modulation Words within a Modulation Cycle if LOOP function is
used. Note that an alternate modulated waveform is generated using only two Modulation Words, in this
case Modulation Word 0 and Modulation Word 1.
Figure 23-41. LOOP function used within a modulation cycle
23.10.3 Banked mode
Figure 23-42 describes the interconnection of four channels controlling two injector banks. Note that two
output pins are not connected since the boost control is shared between channels [0] and [1] and channels
[2] and [3].
Figure 23-42. Four channels controlling two injector banks in banked mode
phase A phase B phase C phase D phase E
modulation cycle
LOOP = 0
LOOP = 1 LOOP = 0
LOOP = 1
LOOP = 0
Modulation Word 0
Modulation Word 1 Modulation Word 0
Modulation Word 1 Modulation Word 0
Vboost
Vbatt
Injector A
Injector B
boost
circuit
CH0
ch0_a
ch0_b
ch0_c
Sensor
Vboost
Vbatt
Injector C
Injector D
Sensor
banked
logic
CH1
ch1_a
ch1_b
ch1_c
banked
logic
CH2
ch2_a
ch2_b
ch2_c
banked
logic
CH3
ch3_a
ch3_b
ch3_c banked
logic