SM5902AF Nippon Precision Circuits Inc, SM5902AF Datasheet - Page 22

• Manufacturer Part Number: SM5902AF
• Description: compression and non compression type shock-proof memory controller
• Manufacturer: Nippon Precision Circuits Inc

86H (digital audio interface settings)
- CP1, CP2 (channel status and clock accuracy set-
ting)
87H (subcode Q data setting)
- QAD3 to QAD0 (Q data setting and word address
specification)
- Subcode Q data setting process
When 0 and 0: Level 2 (max ± 300 ppm)
When 0 and 1: Level 3I (max ± 10%)
When 1 and 0: Level 1 (max ± 50 ppm)
When 1 and 1: Not supported
QAD3 (MSB) to QAD0 (LSB) specify one of 10
valid addresses in the range 0000 to 1001.
If an address in the range 1010 to 1111 is speci-
fied, the data on QD7 to QD0 is ignored.
Note that writing to address 1001 also functions
as the write stop command.
Initially, data is written to word address range
0000 to 1000, and then data is written to address
1001. Next, only data that needs to be changed
is written if the 91H command QRDY bit is 1, and
Adderss map for Q data setting beuffer
QAD3
0
0
0
0
0
0
0
0
1
1
QAD2 QAD1
S0, S1
0
0
0
0
1
1
1
1
0
0
bit
0
0
1
1
0
0
1
1
0
0
0
Control
1
2
QAD0
0
1
0
1
0
1
0
1
0
1
3
4
ADR
5
DQ17
DQ25
DQ33
DQ41
DQ49
DQ57
DQ65
CTL0
QD7
DQ1
DQ9
6
80 bit
7
SM5902AF
8
DQ10
DQ18
DQ26
DQ34
DQ42
DQ50
DQ58
DQ66
CTL1
QD6
DQ2
9
96 bit
DATA-Q
DQ11
DQ19
DQ27
DQ35
DQ43
DQ51
DQ59
DQ67
CTL2
- LBIT (digital audio signal generation logic)
- DIT (digital audio interface enable)
- QD7 to QD0 (Q data setting and word data)
QD5
DQ3
When 1: Not assigned
When 0: Post-recording software
When 1: DIT output enable
When 0: DIT LOW-level output
The CD Q-channel has the general data format
shown below.
The write data required to fully specify the Q data
is the 80 bits comprising CONTROL, ADR, and
DATA-Q.
The CRC write data is not required because it is
generated by recalculation.
then address 1001 is written again. Note that
when shockproof mode is ON, the Q data is
specified according to the data output from the
SM5902AF.
78 79 80
DQ12
DQ20
DQ28
DQ36
DQ44
DQ52
DQ60
DQ68
CTL3
QD4
DQ4
ADR3
DQ13
DQ21
DQ29
DQ37
DQ45
DQ53
DQ61
DQ69
NIPPON PRECISION CIRCUITS-22
QD3
DQ5
CRC
DQ14
DQ22
DQ30
DQ38
DQ46
DQ54
DQ62
DQ70
ADR2
QD2
DQ6
95
S0, S1
ADR1
DQ15
DQ23
DQ31
DQ39
DQ47
DQ55
DQ63
DQ71
QD1
DQ7
ADR0
DQ16
DQ24
DQ32
DQ40
DQ48
DQ56
DQ64
DQ72
QD0
DQ8