Cypress Semiconductor FX2LP Technické informace Strana 321

  • Stažení
  • Přidat do mých příruček
  • Tisk
  • Strana
    / 460
  • Tabulka s obsahem
  • KNIHY
  • Hodnocené. / 5. Na základě hodnocení zákazníků
Zobrazit stránku 320
Chapter 15. Registers Page 15-1
Chapter 15 Registers
15.1 Introduction
This section describes the EZ-USB FX2 registers in the order they appear in the EZ-USB FX2
memory map, see Figure 5-4. The registers are named according to the following conventions.
Most registers deal with endpoints. The general register format is DDDnFFF, where:
DDD is endpoint direction, IN or OUT with respect to the USB host.
n is the endpoint number, where:
•“ISO indicates isochronous endpoints as a group.
FFF is the function, where:
CS is a control and status register
IRQ is an Interrupt Request bit
IE is an Interrupt Enable bit
BC, BCL, and BCH are byte count registers. BC is used for single byte counts, and
BCH/BCL are used as the high and low bytes of 16-bit byte counts.
DATA is a single-register access to a FIFO.
BUF is the start address of a buffer.
15.1.1 Example Register Formats
EP1INBC is the Endpoint 1 IN byte count.
Zobrazit stránku 320
1 2 ... 316 317 318 319 320 321 322 323 324 325 326 ... 459 460

Komentáře k této Příručce

Žádné komentáře