TMS320F28335, TMS320F28334, TMS320F28332
TMS320F28235, TMS320F28234, TMS320F28232
SPRS439I–JUNE 2007–REVISED MARCH 2011
www.ti.com
Table 2-3. Signal Descriptions (continued)
PIN NO.
ZHH
(1)
PGF/
PTP
PIN #
NAME
DESCRIPTION
ZJZ
BALL # BALL #
GPIO6
General purpose input/output 6 (I/O/Z)
EPWM4A
EPWMSYNCI
EPWMSYNCO
Enhanced PWM4 output A and HRPWM channel (O)
External ePWM sync pulse input (I)
External ePWM sync pulse output (O)
13
16
17
18
19
20
21
24
E1
F2
F1
G5
G4
G2
G3
H3
F1
F2
F3
G1
G2
G3
H1
H2
GPIO7
General purpose input/output 7 (I/O/Z)
Enhanced PWM4 output B (O)
McBSP-A receive clock (I/O)
EPWM4B
MCLKRA
ECAP2
Enhanced capture input/output 2 (I/O)
GPIO8
General Purpose Input/Output 8 (I/O/Z)
Enhanced PWM5 output A and HRPWM channel (O)
Enhanced CAN-B transmit (O)
EPWM5A
CANTXB
ADCSOCAO
ADC start-of-conversion A (O)
GPIO9
General purpose input/output 9 (I/O/Z)
Enhanced PWM5 output B (O)
SCI-B transmit data(O)
EPWM5B
SCITXDB
ECAP3
Enhanced capture input/output 3 (I/O)
GPIO10
General purpose input/output 10 (I/O/Z)
Enhanced PWM6 output A and HRPWM channel (O)
Enhanced CAN-B receive (I)
EPWM6A
CANRXB
ADCSOCBO
ADC start-of-conversion B (O)
GPIO11
EPWM6B
SCIRXDB
ECAP4
General purpose input/output 11 (I/O/Z)
Enhanced PWM6 output B (O)
SCI-B receive data (I)
Enhanced CAP Input/Output 4 (I/O)
GPIO12
TZ1
CANTXB
MDXB
General purpose input/output 12 (I/O/Z)
Trip Zone input 1 (I)
Enhanced CAN-B transmit (O)
McBSP-B transmit serial data (O)
GPIO13
TZ2
CANRXB
MDRB
General purpose input/output 13 (I/O/Z)
Trip Zone input 2 (I)
Enhanced CAN-B receive (I)
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 function by writing XINTCNF2[HOLD] = 1. If this is not done, the XINTF bus
will go into 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)
TZ3/XHOLD
25
H2
H3
SCITXDB
MCLKXB
SCI-B Transmit (O)
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.
XHOLDA is driven active (low) when the XINTF has granted an XHOLD request. All XINTF
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)
TZ4/XHOLDA
26
27
H4
H5
J1
J2
SCIRXDB
MFSXB
SCI-B receive (I)
McBSP-B transmit frame synch (I/O)
GPIO16
SPISIMOA
CANTXB
TZ5
General purpose input/output 16 (I/O/Z)
SPI slave in, master out (I/O)
Enhanced CAN-B transmit (O)
Trip Zone input 5 (I)
28
Introduction
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