Cypress Semiconductor FX2LP Informações Técnicas Página 374

  • Descarregar
  • Adicionar aos meus manuais
  • Imprimir
  • Página
    / 460
  • Índice
  • MARCADORES
  • Avaliado. / 5. Com base em avaliações de clientes
Vista de página 373
EZ-USB FX2 Technical Reference Manual
Page 15-54 EZ-USB FX2 Technical Reference Manual v2.1
I4V indicates the source of an interrupt from the USB Core. When the USB core generates an
INT4 (FIFO/GPIF) Interrupt Request, it updates INT4IVEC to indicate the source of the inter-
rupt. The interrupt sources are encoded on I2V3:0.
15.7.12 INT 2 and INT 4 Setup
Figure 15-55. INT 2 and INT 4 Setup
Bit 3 AV2EN INT2 Autovector Enable
To streamline the code that deals with the USB interrupts, this bit enables autovectoring on
INT2.
Bit 1 INT4SRC INT 4 Source
If 0, INT4 is supplied by the pin. If INT4SRC = 1:INT4 supplied internally from FIFO/GPIF
sources.
Bit 0 AV4EN INT4 Autovector Enable
To streamline the 8051 code that deals with the FIFO interrupts, this bit enables autovectoring
on INT4.
INTSETUP INT 2 & INT 4 Setup E668
b7 b6 b5 b4 b3 b2 b1 b0
0 0 0 0 AV2EN 0 INT4SRC AV4EN
R/W R/W R/W R/W R/W R/W R/W R/W
0 0 0 0 0 0 0 0
Vista de página 373
1 2 ... 369 370 371 372 373 374 375 376 377 378 379 ... 459 460

Comentários a estes Manuais

Sem comentários