Signal Function Description; Gpio 0 To 31 And Alternative Functions - Siemens Ertec 400 Manual

1.5

Signal Function Description

Pin Description for ERTEC 400
The ERTEC 400 Ethernet communication block is available in a 304-pin FBGA package: The signal names of the
ERTEC 400 are described in this section.
1.5.1

GPIO 0 to 31 and Alternative Functions

Various signals are multiplexed on the same pin. These multiplexed signals can contain up to four different
functions. The alternative functions are assigned in GPIO registers GPIO_PORT_MODE_L and
GPIO_PORT_MODE_H (see Section 4.2.2). The table describes all signals with their different functions and
associated pin numbers.
No. Signal Alternative
Name Function 1
1 GPIO0
2 GPIO1
3 GPIO2
4 GPIO3
5 GPIO4
6 GPIO5
7 GPIO6
8 GPIO7
9 GPIO8 TXD1
10 GPIO9 RXD1
11 GPIO10 DCD1_N
12 GPIO11 DSR1_N
13 GPIO12 CTS1_N
14 GPIO13 TXD2
15 GPIO14 RXD2
16 GPIO15 DCD2_N
17 GPIO16 DSR2_N
18 GPIO17 CTS2_N
19 GPIO18 SSPRXD
20 GPIO19 SSPTXD
21 GPIO20 SCLKOUT
22 GPIO21 SFRMOUT
23 GPIO22 SFRMIN
24 GPIO23 SCLKIN
25 GPIO24 PLL_EXT_IN_N
TGEN_OUT1_N
26 GPIO25
27 GPIO26 TGEN_OUT2_N
28 GPIO27 TGEN_OUT3_N
29 GPIO28 TGEN_OUT4_N
30 GPIO29 TGEN_OUT5_N
31 GPIO30 TGEN_OUT6_N
32 GPIO31
*1 For an IRT application pin GPIO25 is default parameterized as alternate function1 (TGEN_OUT1_N). A
synchronous clock is issued at this pin. During the certification process of a PROFINET IO DEVICE with
IRT functionality this pin has to be accessible from outside (mandatory).
Copyright © Siemens AG 2010. All rights reserved.
Technical data subject to change
Alternative
Function 2
General Purpose I/O / I/O
WDOUT0_N
SSPCTLOE
SSPOE
*1
Alternative I/O
(5)
Function 3 (Reset)
B (I)
B (I)
B (I)
B (I)
B (I)
B (I)
B (I)
B (I)
TRACEPKT0 B/O/-/O (I)
TRACEPKT1 B/I/-/O (I)
TRACEPKT2 B/I/-/O (I)
TRACEPKT3 B/I/-/O (I)
ETMEXTOUT B/I/-/O (I)
B/O (I)
B/I (I)
B/I/O (I)
ETMEXTIN1 B/I/O/I (I)
Reserved B/I/O/O (I)
B/I (I)
TRACEPKT4 B/O/-/O (I)
TRACEPKT5 B/O/-/O (I)
TRACEPKT6 B/O/-/O (I)
TRACEPKT7 B/I/-/O (I)
DBGACK B/I/-/O (I)
B/I (I)
B/O (I)
B/O (I)
B/O (I)
B/O (I)
B/O (I)
B/O (I)
B (I)
Page
12
Pull- Pin Comment
No.
up T21 GPIO (interruptible)
up U21 GPIO (interruptible)
up V22
up V21
up N17
up P19
up R19
up T19
GPIO or UART1 or
up AA20
GPIO or UART1 or
up AB20
GPIO or UART1 or
up AA19
GPIO or UART1 or
up AA18
GPIO or UART1 or
up W13
up V15 GPIO or UART2
up U15 GPIO or UART2
GPIO or UART2 or
up W16
watchdog
GPIO or UART2 or
up AB14
SPI or ETM
GPIO or UART2 or
up AA14
up W22 GPIO or SPI
up AB18 GPIO or SP1 or ETM
up AA17 GPIO or SP1 or ETM
up AB17 GPIO or SP1 or ETM
GPIO or SPI or ETM;
up AA16
if SPI boot
Chip Select
GPIO or SPI (I) or
up Y22
ARM9 debugging (O)
up AA11 GPIO or MC_PLL
up AA10 GPIO or MC_PLL
up AB10 GPIO or MC_PLL
up W10 GPIO or MC_PLL
up W9 GPIO or MC_PLL
up V10 GPIO or MC_PLL
GPIO (interruptible)
up V11
or MC_PLL
up V12 GPIO (interruptible)
ERTEC 400 Manual
Version 1.2.2
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
ETM
ETM
ETM
ETM
ETM
SPI
GPIO =