4 peripheral dma controller (pdc) user interface – Rainbow Electronics AT91CAP9S250A User Manual

Page 340

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340

6264A–CAP–21-May-07

AT91CAP9S500A/AT91CAP9S250A

27.4

Peripheral DMA Controller (PDC) User Interface

Note:

1. PERIPH: Ten registers are mapped in the peripheral memory space at the same offset. These can be defined by the user

according to the function and the peripheral desired (DBGU, USART, SSC, SPI, MCI, etc.)

Table 27-1.

Memory Map

Offset

Register

Name

Access

Reset State

0x100

Receive Pointer Register

PERIPH

(1)

_RPR

Read/Write

0

0x104

Receive Counter Register

PERIPH_RCR

Read/Write

0

0x108

Transmit Pointer Register

PERIPH_TPR

Read/Write

0

0x10C

Transmit Counter Register

PERIPH_TCR

Read/Write

0

0x110

Receive Next Pointer Register

PERIPH_RNPR

Read/Write

0

0x114

Receive Next Counter Register

PERIPH_RNCR

Read/Write

0

0x118

Transmit Next Pointer Register

PERIPH_TNPR

Read/Write

0

0x11C

Transmit Next Counter Register

PERIPH_TNCR

Read/Write

0

0x120

Transfer Control Register

PERIPH_PTCR

Write

0

0x124

Transfer Status Register

PERIPH_PTSR

Read

0

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