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參數(shù)資料
| 型號(hào)： | SAA7382GP |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Error correction and host interface IC for CD-ROM ELM |
| 中文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PQFP80 |
| 封裝： | PLASTIC, QFP-80 |
| 文件頁(yè)數(shù)： | 24/60頁(yè) |
| 文件大小： | 226K |
| 代理商： | SAA7382GP |
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1996 Apr 25
24
Philips Semiconductors
Preliminary specification
Error correction and host interface IC for
CD-ROM (ELM)
SAA7382
Table 22
Data transfer control register bits
Table 23
TRANT transfer bits
In the Sanyo and Oak compatibility modes the only transfers are memory-to-host, host-to-memory, sub-CPU-to-memory,
and memory-to-sub-CPU. Setting the TRANT bits to any other settings while in these host modes will cause undefined
results.
BIT
FLAG
VERBOSE
DMA Mode Select
Use DMA
SUBI Enable
Real Drive Select
DESCRIPTION
7
6
5
4
3
2
1
0
res.
DMAMODE
UDMA
SUBIEN
RDRV
TRANT
reserved
logic 0 = single-word; logic 1 = multi-word
logic 1 = DMA; logic 0 = PIO
logic 1 = interrupt enabled
ATAPI drive number
see Table 23
TRANT
FROM
TO
MAXIMUM BYTES
NOTES
BIT 2
BIT 1
BIT 0
0
0
0
memory
host
65535 (ATAPI)
32767 (Sanyo)
65535 (ATAPI)
32767 (Sanyo)
12
12
reserved
DMA and PIO
0
0
1
host
memory
DMA and PIO
0
0
1
1
1
1
1
0
0
1
0
1
0
1
x
sub-CPU
memory
host
sub-CPU
reserved
memory
sub-CPU
sub-CPU
host
reserved
PIO; DBC not used, always 12 bytes
DMA and PIO
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