參數(shù)資料
型號： EB402
英文描述： EB402 Evaluation Board user＇s guide 7/01
中文描述： EB402評估板用戶指南7月1日
文件頁數(shù)： 21/84頁
文件大?。?/td> 1014K
代理商： EB402
3-6
Hardware Overview
3.1.6 IBOOT (Memory Map Select)
IBOOT is an input to the LSI402ZX. This signal selects the boot mode
for the LSI402ZX. To boot from the device’s internal memory, remove
jumper JP3. To boot from on-board external memory (Flash//SRAM),
install a jumper at JP3. For more information about selecting external
3.1.7 INT[4:0] (External Hardware Interrupts), NMI (Nonmaskable
Interrupt)
INT[4:0] and NMI are external interrupt signals to the LSI402ZX. These
active-HIGH input signals are pulled LOW on the EB402. The EB402
uses these interrupts as shown in Table 3.2.
Table 3.2
LSI402ZX External Interrupt Signal Use
Interrupt
On-Board Use
External Use
INT0
Revision 2 PCB only,
connected to switch S4. Not
used on Revision 1 PCB.
Available to user;
connected to the control
connector, J8, of the EEI.
INT1
Not used.
Available to user;
connected to the control
connector, J8, of the EEI.
INT2
Connected to SPORT0
Interface connector, J3.
(Not used by
EB-EBM-CODEC-1)
Available to user;
connected to the control
connector, J8, of the EEI.
INT3
Connected to SPORT1
Interface connector, J2.
(Not used by
BD-EBM-CODEC-1)
Available to user;
connected to the control
connector, J8, of the EEI.
INT4
INT4 is connected to the
UART’s interrupt output.
Not available to user.
NMI
Not used.
Not available to user.
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