Cypress Semiconductor FX2LP Informações Técnicas Página 400

  • Descarregar
  • Adicionar aos meus manuais
  • Imprimir
  • Página
    / 460
  • Índice
  • MARCADORES
  • Avaliado. / 5. Com base em avaliações de clientes
Vista de página 399
EZ-USB FX2 Technical Reference Manual
Page 15-80 EZ-USB FX2 Technical Reference Manual v2.1
15.11.19 Setup Data Pointer High and Low Address
Figure 15-89. Setup Data Pointer High Address Byte
Figure 15-90. Setup Data Pointer Low Address Byte
Bit 15-0 A15:0
Setup Data Pointer
This buffer is used as a target or source by the Setup Data Pointer and it must be WORD (2-
byte) aligned. This 16-bit pointer, SUDPTRH:L provides hardware assistance for handling
CONTROL IN transfers.
When the firmware loads SUDPTRL, the SIE automatically responds to IN commands with the
appropriate data. If SDPAUTO=1, the length field is taken from the packet or descriptor. If
SDPAUTO=0, SUDPTRL triggers a send to the host and the length is taken from the EP0BCH
and EP0BCL bytes.
SUDPTRH Setup Data Pointer High Address Byte E6B3
b7 b6 b5 b4 b3 b2 b1 b0
A15 A14 A13 A12 A11 A10 A9 A8
R/W R/W R/W R/W R/W R/W R/W R/W
x x x x x x x x
SUDPTRL Setup Data Pointer Low Address Byte E6B4
b7 b6 b5 b4 b3 b2 b1 b0
A7 A6 A5 A4 A3 A2 A1 A0
R/W R/W R/W R/W R/W R/W R/W R
x x x x x x x 0
Vista de página 399
1 2 ... 395 396 397 398 399 400 401 402 403 404 405 ... 459 460

Comentários a estes Manuais

Sem comentários