Figure 36) and i – Rainbow Electronics T89C5121 User Manual
Page 53
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53
A/T8xC5121
4164G–SCR–07/06
Table 36. IPL0 Register
Reset Value = XXX0 0000b
Bit addressable
7
6
5
4
3
2
1
0
-
-
-
PSL
PT1L
PX1L
PT0L
PX0L
Bit
Number
Bit
Mnemonic
Description
7
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
6
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
5
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
4
PSL
Serial port Priority bit
Refer to PSH for priority level.
3
PT1L
Timer 1 overflow interrupt Priority bit
Refer to PT1H for priority level.
2
PX1L
External interrupt 1 Priority bit
Refer to PX1H for priority level.
1
PT0L
Timer 0 overflow interrupt Priority bit
Refer to PT0H for priority level.
0
PX0L
External interrupt 0 Priority bit
Refer to PX0H for priority level.
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