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CHAPTER 31 MEMORY PATCH FUNCTION
■ EDSU extension register 2 (EDSU2)
Address:
0003AD
H
EDSU2
0003AC
H
Access:
R/W : Readable and writable
The EDSU extension register 2 (EDSU2) controls the extended break interrupt selection to trigger an INT9
exception. For both transmit and receive interrupt channels an interrupt number can be choosen out of the
complete interrupts available in the system. There is no restriction for the selectors, to be bound to a specific
transmit or receive function.
For a detailed description of the EDSU2 register refer to Table 31.2-5.
Table 31.2-5 Function of the EDSU2 register
Name
bit 15
to 8
bit 7 to
0
For the selected interrupt numbers, a possible interrupt level configuration has no effect. The interrupts are
taken directly from the peripheral functions or resources connected. However enabling the interrupt within
the selected peripheral function or resource is required.
828
Figure 31.2-5 EDSU extension register 2 (EDSU2)
15
TSEL
R/W
TSEL
Select the interrupt channel number to be reflected by the TINT bit of the EDSU
register. The selected interrupt number will be directed to IRQ9 in case of TIE is
set in the EDSU register.
• Writing a number different from '00' - Enables extended interrupt number
selection. An interrupt channel can be selected free of choice.
• Writing '00' - The standard selection method by SEL1 and SEL0 in the EDSU
register is effective.
• The byte can be read and written.
TSEL is cleared after reset.
RSEL
Select the interrupt channel number to be reflected by the RINT bit of the EDSU
register. The selected interrupt number will be directed to IRQ9 in case of RIE is
set in the EDSU register.
• Writing a number different from '00' - Enables extended interrupt number
selection. An interrupt channel can be selected free of choice.
• Writing '00' - The standard selection method by SEL1 and SEL0 in the EDSU
register is effective.
• The byte can be read and written.
RSEL is cleared after reset.
MB96300 Super Series Hardware Manual
8
7
RSEL
R/W
Function
0
Initial value
00 00
H
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