Use Case 2 (Uc2): Operation Without External Host; Figure 2: Application Operation With External Host - Siemens ERTEC 200P-2 Manual

ERTEC 200P
TCM
(256KByte)
ARM926EJ-S
PN-IP
Local API
Switch Control
Ethernet-Channel Ethernet-Channel
(Port 1)
PHY inside
Magnetics
At GPIO31:0 outputs from the PLL are available in the PN-IP for synchronous applica-
tions on the host. The data transfer to / from the external host is then controlled
through these phase signals and corresponding interrupts. If the host has an own PLL
for cycle synchronization, these can be synchronized by the PLL of the ERTEC 200P.

1.3.2 Use Case 2 (UC2): Operation without external Host

The ERTEC 200P is available for the realization of complex standard IO and remote IO
applications with notably more application code. The ERTEC 200P has an external
memory interface (flash, SDRAM, SRAM, peripherals) and a small integrated memory
(256 kbytes). The PN IO stack and the application lie in the external memory. High-
performance acyclic communication data or application code that is to executed rapidly
are loaded in the integrated memory of the ERTEC 200P.
The digital and analog IOs are connected to the ERTEC 200P pins. Cyclic data can be
controlled by the ARM926 or the GDMA controller via 2x SPI. Alternatively an external
bus controller can also be connected via the EMC.
The following profile is supported:
- PN stack and application are combined as sources
- Time-critical application code ( 256 kbytes) can be loaded into the integrated RAM
Copyright © Siemens AG 2016. All rights reserved
Technical data subject to change
CPU-Core
(Port 2)
PHY inside
Magnetics

Figure 2: Application operation with external host

Memory-/
SDRAM-
Controller
(EMC)
Host
Interface
(16, 32 Bit)
2
IO-RAM
(cyclic data)
Peripheral-
Interface
(PER-IF)
20
SDRAM
contains:
PN-IO Stack & IO
Configurationinfo
(boot from external Host)
Host System
(Technology)
Sync
Flash
RAM contains:
PN-IO Stack
& Application
ERTEC 200P-2 Manual
Version 1.0