EVB9S12XEP100 Freescale Semiconductor, EVB9S12XEP100 Datasheet - Page 465

• Manufacturer Part Number: EVB9S12XEP100
• Description: BOARD EVAL FOR MC9S12XEP100
• Manufacturer: Freescale Semiconductor
• Type: MCUr

Specifications of EVB9S12XEP100

• Contents: Module and Misc Hardware
• Processor To Be Evaluated: MC9S12XEP100
• Data Bus Width: 16 bit
• Interface Type: RS-232
• Silicon Manufacturer: Freescale
• Core Architecture: S12
• Core Sub-architecture: S12
• Silicon Core Number: MC9S12
• Silicon Family Name: S12XE
• Rohs Compliant: Yes
• For Use With/related Products: MC9S12XEP100
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10.9
10.9.1
The recommended initialization of the XGATE is as follows:
The following code example implements the XGATE initialization sequence.
10.9.2
SCI_REGS
SCIBDH
SCIBDL
SCICR2
SCISR1
SCIDRL
TIE
TE
RE
Freescale Semiconductor
Arithmetic Immediate Instructions
Because of an order from the United States International Trade Commission, BGA-packaged product lines and partnumbers
indicated here currently are not available from Freescale for import or sale in the United States prior to September 2010
1. Clear the XGE bit to suppress any incoming service requests.
2. Make sure that no thread is running on the XGATE. This can be done in several ways:
3. Set the XGVBR register to the lowest address of the XGATE vector space.
4. Clear all Channel ID flags.
5. Copy XGATE vectors and code into the RAM.
6. Initialize the S12X_INT module.
7. Enable the XGATE by setting the XGE bit.
SUBL RD, #IMM8
SUBH RD, #IMM8
CMPL RS, #IMM8
CPCH RS, #IMM8
ADDL RD, #IMM8
ADDH RD, #IMM8
LDL RD, #IMM8
LDH RD, #IMM8
a) Poll the XGCHID register until it reads $00. Also poll XGDBG and XGSWEF to make sure
b) Enter Debug Mode by setting the XGDBG bit. Clear the XGCHID register. Clear the XGDBG
The recommended method is a).
Initialization and Application Information
that the XGATE has not been stopped.
bit.
Initialization
Code Example (Transmit "Hello World!" on SCI)
Functionality
CPU
;###########################################
;#
;###########################################
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
Table 10-24. Instruction Set Summary (Sheet 3 of 3)
MC9S12XE-Family Reference Manual Rev. 1.23
S12X
$00C8
SCI_REGS+$00;
SCI_REGS+$00
SCI_REGS+$03
SCI_REGS+$04
SCI_REGS+$07
$80
$08
$04
15
1
1
1
1
1
1
1
1
14
1
1
1
1
1
1
1
1
13
0
0
0
0
1
1
1
1
SYMBOLS
;SCI register space
;SCI Baud Rate Register
;SCI Baud Rate Register
;SCI Control Register 2
;SCI Status
;SCI Control Register 2
;TIE bit mask
;TE bit mask
;RE bit mask
12
0
0
1
1
0
0
1
1
11
0
1
0
1
0
1
0
1
10
RD
RD
RD
RD
RD
RD
RS
RS
9
Register 1
8
7
#
6
Chapter 10 XGATE (S12XGATEV3)
5
4
IMM8
IMM8
IMM8
IMM8
IMM8
IMM8
IMM8
IMM8
3
2
1
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