Datasheet

TMS320F28335, TMS320F28334, TMS320F28332
TMS320F28235, TMS320F28234, TMS320F28232
www.ti.com SPRS439M –JUNE 2007–REVISED AUGUST 2012
Table 2-3. Signal Descriptions (continued)
PIN NO.
PGF,
NAME DESCRIPTION
(1)
ZHH ZJZ
PTP
BALL # BALL #
PIN #
GPIO6 General purpose input/output 6 (I/O/Z)
EPWM4A Enhanced PWM4 output A and HRPWM channel (O)
13 E1 F1
EPWMSYNCI External ePWM sync pulse input (I)
EPWMSYNCO External ePWM sync pulse output (O)
GPIO7 General purpose input/output 7 (I/O/Z)
EPWM4B Enhanced PWM4 output B (O)
16 F2 F2
MCLKRA McBSP-A receive clock (I/O)
ECAP2 Enhanced capture input/output 2 (I/O)
GPIO8 General Purpose Input/Output 8 (I/O/Z)
EPWM5A Enhanced PWM5 output A and HRPWM channel (O)
17 F1 F3
CANTXB Enhanced CAN-B transmit (O)
ADCSOCAO ADC start-of-conversion A (O)
GPIO9 General purpose input/output 9 (I/O/Z)
EPWM5B Enhanced PWM5 output B (O)
18 G5 G1
SCITXDB SCI-B transmit data(O)
ECAP3 Enhanced capture input/output 3 (I/O)
GPIO10 General purpose input/output 10 (I/O/Z)
EPWM6A Enhanced PWM6 output A and HRPWM channel (O)
19 G4 G2
CANRXB Enhanced CAN-B receive (I)
ADCSOCBO ADC start-of-conversion B (O)
GPIO11 General purpose input/output 11 (I/O/Z)
EPWM6B Enhanced PWM6 output B (O)
20 G2 G3
SCIRXDB SCI-B receive data (I)
ECAP4 Enhanced CAP Input/Output 4 (I/O)
GPIO12 General purpose input/output 12 (I/O/Z)
TZ1 Trip Zone input 1 (I)
21 G3 H1
CANTXB Enhanced CAN-B transmit (O)
MDXB McBSP-B transmit serial data (O)
GPIO13 General purpose input/output 13 (I/O/Z)
TZ2 Trip Zone input 2 (I)
24 H3 H2
CANRXB Enhanced CAN-B receive (I)
MDRB McBSP-B receive serial data (I)
GPIO14 General purpose input/output 14 (I/O/Z)
Trip Zone input 3/External Hold Request. XHOLD, when active (low), requests the external
interface (XINTF) to release the external bus and place all buses and strobes into a high-
impedance state. To prevent this from happening when TZ3 signal goes active, disable this
TZ3/XHOLD function by writing XINTCNF2[HOLD] = 1. If this is not done, the XINTF bus will go into
25 H2 H3
high impedance anytime TZ3 goes low. On the ePWM side, TZn signals are ignored by
default, unless they are enabled by the code. The XINTF will release the bus when any
current access is complete and there are no pending accesses on the XINTF. (I)
SCITXDB SCI-B Transmit (O)
MCLKXB McBSP-B transmit clock (I/O)
GPIO15 General purpose input/output 15 (I/O/Z)
Trip Zone input 4/External Hold Acknowledge. The pin function for this option is based on
the direction chosen in the GPADIR register. If the pin is configured as an input, then TZ4
function is chosen. If the pin is configured as an output, then XHOLDA function is chosen.
TZ4/XHOLDA XHOLDA is driven active (low) when the XINTF has granted an XHOLD request. All XINTF
26 H4 J1
buses and strobe signals will be in a high-impedance state. XHOLDA is released when the
XHOLD signal is released. External devices should only drive the external bus when
XHOLDA is active (low). (I/O)
SCIRXDB SCI-B receive (I)
MFSXB McBSP-B transmit frame synch (I/O)
GPIO16 General purpose input/output 16 (I/O/Z)
SPISIMOA SPI slave in, master out (I/O)
27 H5 J2
CANTXB Enhanced CAN-B transmit (O)
TZ5 Trip Zone input 5 (I)
Copyright © 2007–2012, Texas Instruments Incorporated Introduction 27
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