Gpio (General Purpose Input / Output) - Siemens ERTEC 200P-2 Manual

3 RFF
4 BSY
Register: SSPCPSR
Bits: 7dt0
Description: Clock prescale divisor
Register: SSPIIR_SSPICR
Bits: 2dt0
The interrupt status is read from the SSP interrupt identification register
Description:
(SSPIIR)
Bit Identifier
0 RIS
1 TIS
2 RORIS
2.3.10.8
There are a maximum of 96 general purpose input/outputs (GPIOs). They are divided into
2 blocks:
GPIO31-0: 32-bit (available as default GPIO port)
GPIO95-32: 64-bit (available as an alternative to XHIF)
GPIO31-0 is available as a default block and is multiplexed with the interface signals from
the PNPLL, UART2/3, SPI1/2, I
reset, this GPIO block is selected and connected to all inputs. The alternate functions are
set by the SW using the GPIO registers (see 2.3.10.8.5).
The internal MII debug interface (internal PHYs) is also multiplexed to GPIO31-0. This
function is set upon an XRESET PowerOn reset with the configuration pins CONFIG(6-3)
(see 2.3.10.9.3) or by the SW in the SCRB register 'Config-REG(6-3)' (see 2.3.10.9.22).
Rules for the SW: The default values of the alternate functions must not be changed if
the internal MII debug interfaces are selected at the corresponding pins with the configu-
ration pins.
The GPIO15-0 inputs are also connected to an I-filter (see 2.3.10.1) and to the ARM
interrupt controller (IRQ32-47, see 2.3.2.14). The polarity of these signals to the ARM
interrupt controller can be set in the GPIO_INT_POLSEL register (see 2.3.10.9.22). In
line with the polarity of the external signals, this ensures a high-active interrupt level.
Copyright © Siemens AG 2016. All rights reserved
Technical data subject to change
0h r Receive FIFO full
0h r SSP busy flag
Reset value: 00h
Reset value: 0h
Reset Attr. Function / Description
Read: SSP transmit FIFO service request interrupt
0h rh
status
Read: SSP Receive FIFO service request interrupt
0h rh
status
0h rh Read: SSP Receive FIFO overrun interrupt status

GPIO (General Purpose Input / Output)

2
C_1_3, timer 0 – 5 and ARM926 watchdog . Following a
348
Address: 10h
Attributes: r
Address: 14h
Attributes: rh
ERTEC 200P-2 Manual
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