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參數(shù)資料
| 型號： | SAA2022GP |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | Tape formatting and error correction for the DCC system |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | PLASTIC, SOT-208A, QFP-64 |
| 文件頁數(shù)： | 36/52頁 |
| 文件大?。?/td> | 208K |
| 代理商： | SAA2022GP |
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February 1994
36
Philips Semiconductors
Product specification
Tape formatting and error
correction for the DCC system
SAA2022
Random Access counter is used for generating addresses in the Random access mode, the SYSTEM ADDRESS is
mapped on to RACCNT as shown in Table 19.
Table 19
SYSTEM address.
6
5
4
3
2
1
0
RACCNT
8
ROW
2
1
0
COL
2
1
0
PAG
SYSINFO
AND
AUX
DATA OFFSETS
AUX data consists of 4 blocks of 36 bytes, one block being
transferred in each time segment.
Each tape frame contains 128 bytes of SYSINFO, the
SYSINFO bytes can for convenience, be considered as
being grouped into 4 SYSINFO blocks, with:
SYSBlk0 ==> SI0 to SI31,
SYSBlk1 ==> SI32 to SI63, etc.
In modes DPAP and DPAR SYSINFO transfers may occur
in two ways:
1.
4 blocks of 32 bytes, one block being transferred from
the SAA2022 in each time segment.
2.
1 block of 128 bytes being transferred in time
segment 1.
In mode DRAR SYSINFO must be transferred to the
SAA2022 as 4 blocks of 32 bytes, one block in each
segment.
Figures 26 to 29 show the offsets between the SYSINFO
and AUX and the time segment counter, for the various
modes of operation of the SAA2022.
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