Copyright © Siemens AG 2016. All rights reserved
469
ERTEC 200P-2 Manual
Technical data subject to change
Version
1.0
T
SFRMS
SFRMIN Setup Time
17.5
-
ns
T
SFRMH
SFRMIN Hold Time
9.0
-
ns
Based on
Buffer Driverstrength = 9mA
1)
C
L
= 20 pF
2)
Ts, Th > 1 x 125 MHz period; Inputs are synchronized with APB-Clock (F
SSPCLK
).
3)
Slave-Mode : SCLK_IN is synchronized in (2 internal clocks)
Operation without SPI_FRAME_N:
If the ERTEC 200P is connected as SPI slave to a standard controller (SPI master) that does not
support the SPI_FRAME_N signal, the ERTEC 200P is to be set as follows:
Configuration of Motorola format:
SSPCR0.FRF
= '00' (see 2.3.10.7.7)
AND
Configuration of the SPI clock phase:
SSPCR0.SPH
= '1' (see 2.3.10.7.7)
AND
GPIO pin SPI_FRAME_N (see 3.2)
Connect with ext. pull-down
OR
Connect with int. pull-down (
PULLxx_yyGPIO
= "11", see 2.3.10.9.15.2)
OR
Do not select the alternate function (blocking value = '0' is active)
Please note the following restrictions in this operating mode:
In the SPI status register,
SSPSR.BSY
(see 2.3.10.7.7) is not reset at the end of the transfer
Following a RESET (see 0), "zero data" are transferred when the first character (4-bit…16-bit,
SSPCR0.DSS
) is transferred from the SPI slave to the SPI master (return direction).
Содержание ERTEC 200P
Страница 1: ...ERTEC 200P 2 Enhanced Real Time Ethernet Controller Manual ...
Страница 309: ...Copyright Siemens AG 2016 All rights reserved 309 ERTEC 200P 2 Manual Technical data subject to change Version 1 0 ...
Страница 492: ...Copyright Siemens AG 2016 All rights reserved 492 ERTEC 200P 2 Manual Technical data subject to change Version 1 0 ...