Table 8−1. OHCI Register Map (Continued)

DMA CONTEXT

REGISTER NAME

ABBREVIATION

OFFSET

 

 

 

 

 

Asynchronous context control

ContextControlSet

180h

 

 

 

Asynchronous

ContextControlClear

184h

 

Request Transmit

Reserved

188h

[ ATRQ ]

 

 

 

Asynchronous context command pointer

CommandPtr

18Ch

 

 

 

 

 

Reserved

190h−19Ch

 

 

 

 

 

Asynchronous context control

ContextControlSet

1A0h

 

 

 

Asynchronous

ContextControlClear

1A4h

 

Response Transmit

Reserved

1A8h

[ ATRS ]

Asynchronous context command pointer

CommandPtr

1ACh

 

 

 

 

 

Reserved

1B0h−1BCh

 

 

 

 

 

Asynchronous context control

ContextControlSet

1C0h

 

 

 

Asynchronous

ContextControlClear

1C4h

 

Request Receive

Reserved

1C8h

[ ARRQ ]

 

 

 

Asynchronous context command pointer

CommandPtr

1CCh

 

 

 

 

 

Reserved

1D0h−1DCh

 

 

 

 

 

Asynchronous context control

ContextControlSet

1E0h

 

 

 

Asynchronous

ContextControlClear

1E4h

 

Response Receive

Reserved

1E8h

[ ARRS ]

 

 

 

Asynchronous context command pointer

CommandPtr

1ECh

 

 

 

 

 

Reserved

1F0h−1FCh

 

 

 

 

 

Isochronous transmit context control

ContextControlSet

200h + 16*n

 

 

 

Isochronous

ContextControlClear

204h + 16*n

 

 

 

 

Reserved

208h + 16*n

Transmit Context n

 

 

 

Isochronous transmit context command

 

 

n = 0, 1, 2, 3, , 7

CommandPtr

20Ch + 16*n

pointer

 

 

 

 

 

 

 

 

Reserved

210h−3FCh

 

 

 

 

 

Isochronous receive context control

ContextControlSet

400h + 32*n

 

 

 

Isochronous

ContextControlClear

404h + 32*n

 

 

 

 

Reserved

408h + 32*n

Receive Context n

 

 

 

Isochronous receive context command

 

 

n = 0, 1, 2, 3

CommandPtr

40Ch + 32*n

pointer

 

 

 

 

 

 

 

 

Isochronous receive context match

ContextMatch

410h + 32*n

 

 

 

 

8−3

Page 183
Image 183
Texas Instruments PCI7421 Asynchronous context control ContextControlSet, ContextControlClear, Request Transmit Reserved