SAA7385 Datasheet, PDF (44/64 Pages) NXP Semiconductors – Error correction and host interface IC for CD-ROM SEQUOIA

Philips Semiconductors
Error correction and host interface IC for
CD-ROM (SEQUOIA)
Preliminary specification
SAA7385
12 FRAME BUFFER ORGANIZATION
Table 75 Frame buffer organization
DECIMAL
START
0
12
16
2 064
2 068
2 076
2 248
2 352
2 368
2 464
2 758
2 762
2 934
3 038
END
11
15
2 063
2 067
2 075
2 247
2 351
2 367
2 463
2 757
2 761
2 933
3 037
3 038
LEN
12
4
2 048
4
8
172
104
16
96
294
4
172
104
1
HEXADECIMAL
START
END
000
00C
010
810
814
81C
8C8
930
940
9A0
AC6
ACA
B76
BDE
00B
00F
80F
813
81B
8C7
92F
93F
99F
AC5
AC9
B75
BDD
BDE
LEN
00C
004
800
004
008
0AC
068
010
060
126
004
0AC
068
001
DATA
synchronization field
header
frame data
CRC parity
padding
P parity
Q parity
Q channel
sub-channel
error flags
CRC remainder
P syndromes
Q syndromes
status
Table 76 ECC RAM organization
DEC
000
↓
204
208
↓
340
344
↓
564
568
572
576
580
584
588
HEX
000
↓
0CC
0D0
↓
154
158
↓
234
238
23C
240
244
248
588
3
psyn[00].s1
↓
psyn[51].s1
psyn[52].s1
↓
psyn[85].s1
flags[071]
↓
flags[291]
unused[1]
crc_rem[3]
header[3]
ecc_reg[03]
ecc_reg[07]
ecc_reg[11]
BYTE NUMBER
2
1
psyn[00].s0
↓
psyn[51].s0
psyn[52].s0
↓
psyn[85].s0
flage[070]
↓
flage[290]
unused[0]
crc_rem[2]
header[2]
ecc_reg[02]
ecc_reg[06]
ecc_reg[10]
qsyn[00].s1
↓
qsyn[51].s1
flags[001]
↓
flags[067]
flags[069]
↓
flags[289]
flags[293]
crc_rem[1]
header[1]
ecc_reg[01]
ecc_reg[05]
ecc_reg[09]
0
qsyn[00].s0
↓
qsyn[51].s0
flags[000]
↓
flags[066]
flags[068]
↓
flags[288]
flags[292]
crc_rem[0]
header[0]
ecc_reg[00]
ecc_reg[04]
ecc_reg[08]
1996 Jun 19
44