LSI Logic Confidential
14-10
Bitstream I/O (Storage) Port
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
SdInt
23
1 = generate interrupt at the beginning of every SD
packet (DVD Control register Int bit must also be set).
This allows the software to update the DVD Sector Delay
register for the next packet; 0= normal mode.
AtapiRs
22
ATAPI Reset. 1 = Assert ATAPI_RESET pin, 0 = Deassert
ATAPI_RESET pin. This happens only when Mode is 0
(ATAPI).
TKDec
21
Title Key Decryption. 1 = Decrypt the encrypted Title Key
on the fly, and use the result for the subsequent
descrambling, 0 = Use the previously decrypted Title Key.
This bit is used with the ATAPI_DESC_BS,
SD_DESC_BS and DESC_SDRAM commands.
SDWrRe
20
SD Write Request. 0 = An active SD_WRREQ pin
indicates a write command (and an active SD_RDREQ
pin indicates a read command). 1 = An active
SD_WRREQ indicates that there is a valid command,
which is a read if SD_RDREQ is active, and a write if
SD_RDREQ is not active.
EnSeSrt
19
1 = Use the SD_SECSTART pin to mark the beginning of
a sector, instead of using header search. Valid only for
SD mode.
On input, the BIO uses the pin to start reading a sector
with length specified in register DVD Sector Length.
Between two sector starts, if there is more data than
specified in DVD Sector Length, they are ignored; if there
is less data than specified in DVD Sector Length, zeroes
are padded to fill up the size, and the error masks are set
for the padded bytes.
On output, the BIO drives the pin when it sends the first
byte.
Mode
[18:17]
The interface protocol in which the BIO will be working:
0 = ATAPI, 1 = SD, 2 = CD. Software must set this bit