Control For Input Connections To Ecapx Modules - Texas Instruments TMS570LC4357 Technical Reference Manual

Control of Special Multiplexed Options
Of the three internal error events for the trip-zone inputs, nTZ4 is connected to the eQEPx error output
signal. There are two eQEP modules on this microcontroller, and registers in the I/O multiplexing module
are used to allow a flexible scheme for the connection between the eQEPx error signal and the nTZ4
inputs of the ePWMx modules.
Table 6-7. Controls for eQEPx_ERROR Connection to ePWMx nTZ4 Inputs
ePWMx Module
ePWM1
ePWM2
ePWM3
ePWM4
ePWM5
ePWM6
ePWM7

6.5.10 Control for Input Connections to eCAPx Modules

Each eCAPx module has a single input from the device terminals. This input can be connected to the
eCAPx module in one of two ways:
1. Double-synchronized using VCLK3
2. Double-synchronized using VCLK3 and then filtered through a 6-VCLK3-cycle counter
Registers in the I/O multiplexing module are used to control these input connections for each eCAPx
module.
eCAPx Input
eCAP1
eCAP2
eCAP3
eCAP4
eCAP5
eCAP6
322
I/O Multiplexing and Control Module (IOMM)
Control for nTZ4 =
not(eQEP1ERR or eQEP2ERR)
(default connection)
PINMMR167[0] = 1
PINMMR167[8] = 1
PINMMR167[16] = 1
PINMMR167[24] = 1
PINMMR168[0] = 1
PINMMR168[8] = 1
PINMMR168[16] = 1
Table 6-8. Controls for eCAPx Inputs
Control for Double-VCLK3-
Synchronized Input
(default connection)
PINMMR169[0] = 0
PINMMR169[8] = 0
PINMMR169[16] = 0
PINMMR169[24] = 0
PINMMR170[0] = 0
PINMMR170[8] = 0
Copyright © 2018, Texas Instruments Incorporated
Control for nTZ4 =
not(eQEP1ERR)
PINMMR167[0] = 0
PINMMR167[1] = 1
PINMMR167[8] = 0
PINMMR167[9] = 1
PINMMR167[16] = 0
PINMMR167[17] = 1
PINMMR167[24] = 0
PINMMR167[25] = 1
PINMMR168[0] = 0
PINMMR168[1] = 1
PINMMR168[8] = 0
PINMMR168[9] = 1
PINMMR168[16] = 0
PINMMR168[17] = 1
Control for Double-VCLK3-
Synchronized and
6-VCLK3-Filtered Input
PINMMR169[0] = 0
PINMMR169[1] = 1
PINMMR169[8] = 0
PINMMR169[9] = 1
PINMMR169[16] = 0
PINMMR169[17] = 1
PINMMR169[24] = 0
PINMMR169[25] = 1
PINMMR170[0] = 0
PINMMR170[1] = 1
PINMMR170[8] = 0
PINMMR170[9] = 1
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Control for nTZ4 =
not(eQEP2ERR)
PINMMR167[1:0] = "00"
PINMMR167[2] = 1
PINMMR167[9:8] = "00"
PINMMR167[10] = 1
PINMMR167[17:16] = "00"
PINMMR167[18] = 1
PINMMR167[25:24] = "00"
PINMMR167[26] = 1
PINMMR168[1:0] = "00"
PINMMR168[2] = 1
PINMMR168[9:8] = "00"
PINMMR168[10] = 1
PINMMR168[17:16] = "00"
PINMMR168[18] = 1
SPNU563A – March 2018