Debug And Trace Interface; 2.1.10 Serial Asynchronous Interfaces; General Purpose Interface (Gpio) - Siemens ERTEC EB 200 Manual

2.1.9

Debug and Trace Interface

The ETM macro cell of the ARM946E-S can be used as a debug and trace interface in the ERTEC 200. With this
interface, the user software running on the ARM946E-S and the user data can be analyzed and traced. The ETM
module is a standard module recommended by ARM on which various available debuggers can be run. If the trace
interface is used, the LBU interface is not available (configuration setting "Trace On", see Section 2.1.2). If the trace
interface is used, the required parameter assignment of the ETM macro cell must be performed with the debugger, so
that the required pins are switched to trace functionality.
The ETM macro cell is described in documents /9/ and /10/.

2.1.10 Serial Asynchronous Interfaces

The EB 200 has an RS232 interface with a 9-pin SUB-D male connector, which is designated X7. Only the RxD and
TxD signals are lead through. The interface can be deactivated using jumper X11 11/12 (SYS_CONFIG[2]) (see also
Section 2.1.2 ).

2.1.11 General Purpose Interface (GPIO)

The GPIO interface of the ERTEC 200 consists of 45 I/O that can be divided into two groups. The GPIOs[31:0] are
multiplexed with various alternative function blocks by means of the APB bus. GPIO [31,30,1,0] can be used as inputs
with interrupt capability. Alternatively, the GPIOs[44:32] can be selected for the LBU interface using the configuration
setting (see Section 2.1.2).
Signal Alternative
Name Function 2
Function 1
GPIO0 P1-DUPLEX_N-
LED
GPIO1 P2-DUPLEX_N-
LED
GPIO2 P1-SPEED_N-
100LED (TX/FX)
GPIO3 P2-SPEED_N-
100LED (TX/FX)
GPIO4 P1-LINK_N-LED
GPIO5 P2-LINK_N-LED
GPIO6 P1-RX_N-LED
GPIO7 P2-RX_N-LED
GPIO8 UART_TXD
GPIO9 UART_RXD
GPIO10 UART_DCD_N
GPIO11 UART_DSR_N
GPIO12 UART_CTS_N
GPIO13 IRTE_TRIG_
TRACE_UNIT
GPIO14 DBGACK
GPIO15 WD_WDOUT0_N
GPIO16 SPI1_SSPCTLOE
GPIO17 SPI1_SSPOE
GPIO18 SPI1_SSPRXD
GPIO19 SPI1_SSPTXD
GPIO20 SPI1_SCLKOUT
Copyright © Siemens AG 2010. All rights reserved.
Technical data subject to change
Alternative Alternative
Function 3 Function 4
P1-TX_N-LED P1-ACTIVE_N
-LED
P2-TX_N-LED P2-ACTIVE_N
-LED
16
Use (Default)
GPIO (interrupt-capable)
GPIO (interrupt-capable)
Bus error - LED
Sync error - LED
Link Port1 LED
Link Port2 LED
Activity Port1 LED
Activity Port2 LED
UART (Transmit Data, O)
UART (Receive Data, I)
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
SPI1 (Receive Data; I)
SPI1 (Transmit Data; O)
SPI1 (ClkOut Master; O)
EB 200 Manual
Version 1.1.4