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AN2549 Scheda tecnica(PDF) 21 Page - STMicroelectronics

Il numero della parte AN2549
Spiegazioni elettronici  Porting an application from the ST10F269Zx to the ST10F272Z2
PDF  33 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2549 Scheda tecnica(HTML) 21 Page - STMicroelectronics

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AN2549
Modified registers
21/33
3
Modified registers
3.1
XPERCON register
In the ST10F272Z2, new bits have been added with regards to the additional XPeripherals.
The XPERCON register allows the XBus peripherals to be separately selected and made
visible to the user by means of the corresponding bits. If an XBus peripheral is not selected
(not activated with a bit of XPERCON) before the XPEN bit in SYSCON is set, the
corresponding address space, port pins and interrupts are not occupied by the peripheral,
and thus this peripheral is not visible and not available.
ST10F269Zx: XPERCON (F024h /
12h)
SFR
Reset value: --05h
15
14
13
12
11
10
98765
4321
0
Reserved
RTC
EN
CAN2
EN
CAN1
EN
-
R/W
R/W
R/W
R/W
R/W
ST10F272Z2: XPERCON (F024h/12h)
SFR
Reset value: -005h
15
14
13
12
11
10
98765
4321
0
Reserved
XI2C
EN
XSSC
EN
XASC
EN
Res.
RTC
EN
CAN2
EN
CAN1
EN
-
R/W
R/W
R/W
R/W
R/W
-
R/W
R/W
R/W
R/W
R/W
Table 15.
XPERCON register description
Bit
Bit name
Function
15:11
-
Reserved
10
XMISCEN
XBUS Additional Features Enable Bit
0: Accesses to the Additional Miscellaneous Features is disabled.
1: The Additional Features are enabled and can be accessed.
9XI2CEN
XI 2 C Enable Bit
0: Accesses to the on-chip XI 2 C are disabled, external access performed.
1: The on-chip XI 2 C is enabled and can be accessed.
8
XSSCEN
XSSC Enable Bit
0: Accesses to the on-chip XSSC are disabled, external access performed.
1: The on-chip XSSC is enabled and can be accessed.
7
XASCEN
XASC Enable Bit
0: Accesses to the on-chip XASC are disabled, external access performed.
1: The on-chip XASC is enabled and can be accessed.
6XPWMEN
XPWM Enable
0: Accesses to the on-chip XPWM module are disabled, external access
performed.
1: The on-chip XPWM module is enabled and can be accessed.
5-
Reserved



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