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R0P7727TH003TRKE General Information Manual
7. External Interrupts
7.1 SH7727 External Interrupts
Figure 7.1 shows a mechanism for the SH7727 interrupt signal.
Table 7.1 shows the levels for respective interrupt signals.
As shown in Figure 7.1, interrupt signals from devices within T-Engine are sent to the pins /IRQ4, PINT11,
PINT6 and PINT7 of theSH7727. The interrupt signals /IRQ0 to /IRQ3 are converted into the /IRL signals by
FPGA, then output to the /IRL [3:0] of the SH7727.
SH7727
PINT11
No.
Interrupt request source
1
PCMCIA controller
2
UART controller chA
3
UART controller chB
4
H8/3048F-ONE
5
Expansion slot IRQ0 (*1)
6
Expansion slot IRQ1 (*1)
7
Expansion slot IRQ2 (*1)
8
Expansion slot IRQ3 (*1)
*1 The interrupt levels of the expansion slot interrupts /IRQ0 to /IRQ3 are all active "Low."
PINT6
PINT7
/IRQ4
/IRL0
/IRL1
/IRL2
/IRL3
Figure 7.1 Interrupt Signal Mechanism
Table 7.1 Interrupt Levels for Interrupt Signals
Interrupt input pin
/IRQ4
PINT6
PINT7
PINT11
/IRL [3..0]
/IRL [3..0]
/IRL [3..0]
/IR L[3..0]
FPGA
⇒
/IRQ
/IRL
Conversion
Interrupt signal level
Active "Low"
Active "High"
Active "High"
Active "Low"
/IRL [3..0]=1101
/IRL [3..0]=1001
/IRL [3..0]=0101
/IRL [3..0]=0001
96
External Interrupts
Power Supply Controller
(H8/3048F-ONE)
/H8_IRQ (PB3)
UART Controller
INTA
INTB
PCMCIA Controller
/SIRQ0
/SIRQ1
/SIRQ2
/SIRQ3
Expansion slot
/IRQ0
/IRQ1
/IRQ2
/IRQ3
Remarks
For H8/3048F-ONE
For T-MONITOR
Interrupt level 2
Interrupt level 6
Interrupt level 10
Interrupt level 14
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