SAA7348GP Datasheet, PDF (30/60 Pages) NXP Semiconductors – All Compact Disc Engine ACE

Philips Semiconductors
All Compact Disc Engine (ACE)
Preliminary specification
SAA7348GP
8.1.8
MOTOR SETPOINT REGISTER (MSR; address
0XF9H)
The motor setpoint register is used to set the speed of the
motor in Quasi CLV mode. QCLV motor control is switched
off by making the setpoint equal 00100000. See Table 22
for setpoint/speed values. Note that these are measured
values. They were measured using the motor control
bread board. This bread board was hooked onto a ROM
65000 loader 12.66 application. The filter in the config
control (Cnf_filter) was switched off. A motor gain of 5 was
used. The register is byte addressable; R/W.
Table 22 Speed measurements
SFR
SETPOINT
00100000
00100010
00100011
00100101
00100111
00101000
00101010
00101100
00101101
00101111
00110000
00110010
00110011
00110101
00110111
00111000
00101010
00111100
00111110
00111111
01000000
01000010
01000011
01000101
01000111
01001001
01001011
01001100
01001110
01001111
01010001
01010010
MEASURED
SPEED
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4.0
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
SFR
SETPOINT
01010100
01010110
01010111
01011001
01011011
01011100
01011110
01011111
01100001
01100010
01100100
01100110
01100111
01101001
01101011
01101100
01101110
01101111
01110001
01110010
01110100
01110110
01110111
01111001
01111011
01111100
01111110
10000000
01111111
10000001
10000011
10000100
MEASURED
SPEED
5.0
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
6.0
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
7.0
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.7
7.8
7.9
8.0
1997 Jul 11
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