SAF-C164SM Infineon Technologies, SAF-C164SM Datasheet - Page 261
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SAF-C164SM
Manufacturer Part Number
SAF-C164SM
Description
16-Bit CMOS Microcontroller
Manufacturer
Infineon Technologies
Datasheet
1.SAF-C164SM.pdf
(470 pages)
- Current page: 261 of 470
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Initial State in BSL Mode
After entering BSL mode and the appropriate initialization
line to receive a zero byte, that is, one start bit, eight ‘0’ data bits and one stop bit. From
the duration of this zero byte, it calculates the corresponding baudrate factor with respect
to the current CPU clock, initializes the serial interface ASC0 accordingly, and switches
pin TxD0 to output. Using this baudrate, an identification byte is returned to the host that
provides the data to be loaded.
This identification byte identifies the device to be booted using the following codes:
55
A5
B5
C5
D5
Note: The identification byte D5
When the C164CM has entered BSL mode, the following configuration is automatically
set (values that deviate from the normal reset values, are marked):
Watchdog Timer:
Context Pointer CP: FA00
Stack Pointer SP:
Register S0CON:
Register S0BG:
Other than after a normal reset the watchdog timer is disabled, so the bootstrap loading
sequence is not time limited. Pin TxD0 is configured as output, so the C164CM can
return the identification byte.
Note: Even if the internal ROM/OTP/Flash is enabled, no code can be executed out of
1)
User’s Manual
H
The external host should not send the zero byte before the end of the BSL initialization time (see
to ensure that it is correctly received.
H
H
H
H
:
:
:
:
:
information can be obtained from the identification registers.
it while the C164CM is in BSL mode.
8xC166.
Previous versions of the C167 (obsolete).
Previous versions of the C165.
C167 derivatives.
All devices equipped with identification registers.
Disabled
FA40
8011
acc. to ‘00’ byte
H
H
H
H
does not directly identify a specific derivative. That
15-3
Register STKUN:
Register STKOV:
Register BUSCON0: acc. to startup config.
P0H.3/TxD0:
DP0H.3:
1)
the C164CM scans the RxD0
FC00
F600
‘1’
‘1’
C164CM/C164SM
Bootstrap Loader
H
H
Derivatives
V1.0, 2002-02
Figure
15-1)
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