Datasheet

Chapter 10 XGATE (S12XGATEV3)
MC9S12XE-Family Reference Manual Rev. 1.25
362 Freescale Semiconductor
Read: Anytime
Write: In Debug Mode
1
10.3.1.3 XGATE Channel Priority Level (XGCHPL)
The XGATE Channel Priority Level Register (Figure 10-5) shows the priority level of the current thread.
In debug mode this register can be used to select a priority level when launching a thread (see
Section 10.6.1, “Debug Features”).
Read: Anytime
Write: In Debug Mode
1
10.3.1.4 XGATE Initial Stack Pointer Select Register (XGISPSEL)
The XGATE Initial Stack Pointer Select Register (Figure 10-6) determines the register which is mapped
to address “Module Base +0x0006”. A value of zero selects the Vector Base Register (XGVBR). Setting
Module Base +0x0002
76543210
R 0 XGCHID[6:0]
W
Reset 00000000
= Unimplemented or Reserved
Figure 10-4. XGATE Channel ID Register (XGCHID)
Table 10-3. XGCHID Field Descriptions
Field Description
6–0
XGCHID[6:0]
Request Identifier — ID of the currently active channel
1. Refer to Section 10.6.1, “Debug Features”
Module Base +0x0003
76543210
R00000 XGCHPL[2:0]
W
Reset 00000000
= Unimplemented or Reserved
Figure 10-5. XGATE Channel Priority Level Register (XGCHPL)
Table 10-4. XGCHPL Field Descriptions
Field Description
2-0
XGCHPL[2:0]
Priority Level— Priority level of the currently active channel