Table 3-23. PCIe Connector (J27) Pin-out (continued)
Pin No.
Side A of PCIe
Connector
GP Board Signal
Side B of PCIe
Connector
GP Board Signal
20
GND
GROUND
PETn1
NC
21
PERp1
NC
GND
GROUND
22
PERn1
NC
GND
GROUND
23
GND
GROUND
PETp2
NC
24
GND
GROUND
PETn2
NC
25
PERp2
NC
GND
GROUND
26
PERn2
NC
GND
GROUND
27
GND
GROUND
PETp3
NC
28
GND
GROUND
PETn3
NC
29
PERp3
NC
GND
GROUND
30
PERn3
NC
RSVD3
NC
31
GND
GROUND
PRSNT2#_2
NC
32
RSVD2
NC
GND
GROUND
3.4.13 High Speed Expansion Interface
The GP board has a high-speed expansion connector allowing connections to the ICSSG and GPMC capabilities
of the AM64x. One High Speed connector with part number
SEAF-30-06.0-L-05-2-A-K-TR
is used on the EVM.
All the signals associated with the ICSSG0 interface is routed to the expansion connector. In addition, the data
and command signals for the GPMC are routed to the AM64x as well.
The trace signal is routed to either the high-speed expansion connector or the MIPI60 connector. Zero-Ω resistor
is used to minimize the disruption to the routing. Default configuration will have the resistors installed thereby
routing the signals to the HSE connector. The MIPI60 is not installed by default.
One FSI transmit channel and one FSI receive channel is required to connect with the C2000 EVM. These
signals from SoC are terminated on 2x5 header with part number
67997-410HLF
from Amphenol ICC (FCI).
These signals are muxed so that they are available to both the FSI connector and the expansion connector.
FSI_TX0 signals and FSI_RX0 signals are connected to the mux. The mux is controlled by jumper. The default
state drives the signals from AM64x SoC to the HSE connector unless the jumper is installed. The boards will be
delivered with the jumper installed.
Additional signals like UART4, I2C0, SPI1 and GPIOs are connected to the HSE connector to provide additional
connectivity options.
Necessary voltages such as 5 V, 3V3, 1V8 are provided to the HSE connector and these voltages are connected
through current limiting switches ensuring that an accidental short on the connector will not damage the EVM.
The connector includes a presence detect pin that will be grounded on the application board. This is connected
to the ExpBrdDetect signal on the I2C presence detect buffer. A board ID memory is included in external HSE
board and programmed to identify the board. I2C3 Pinmuxed with MCAN1 & UART4 pinmuxed with MCAN0 are
routed to HSE Connector.
Table 3-24. Selection of PRG0 Signals on Application Connector
Pin
Net Name
Pin
Net Name
A1
VCC_5V0_HSE
B1
SOC_SPI1_MISO
A2
VCC_5V0_HSE
B2
SOC_SPI1_MOSI
A3
VCC_5V0_HSE
B3
DGND
A4
PRG0_MDIO0_MDIO
B4
PRG0_PRU1GPO8
A5
PRG0_MDIO0_MDC
B5
DGND
A6
DGND
B6
DGND
A7
PRG0_PRU0GPO8
B7
PRG0_PRU0GPO7
A8
PRG0_PRU0GPO2
B8
PRG0_PRU0GPO17
A9
PRG0_PRU0GPO3
B9
PRG0_PRU0GPO18
System Description
SPRUIX0B – FEBRUARY 2021 – REVISED MARCH 2021
AM64x GP EVM User's Guide
43
Copyright © 2021 Texas Instruments Incorporated