SAA7392HLM2B View Datasheet(PDF) - Philips Electronics
Part Name
Description
MFG CO.
'SAA7392HLM2B' PDF : 76 Pages View PDF
Philips Semiconductors
Channel encoder/decoder CDR60
Preliminary specification
SAA7392
7.16.3 EFM CLOCK CONFIGURATION REGISTER 3 (EFMCLOCKCONF3)
This is a dual-function register, the specific function is controlled by the state of bit 7.
The integrator of the PI controller can be preset by writing to this register with the MSB set to logic 0. The value written
is interpreted as a signed value. The current integrator value can be read back via this register.
To program the Kp and Ki values, bit 7 of the EFMClockConf3 register must be logic 1.
To determine the time constant of the I-branch, the sample frequency of the integrator must be known. This sample
frequency is programmed via register EFMClockConf4 when the MSB is logic 1. The LSB is actually the switch to turn
off the integrator path. The value in the integrator is not affected by programming this bit, so the integrator can be used
as offset when Ki is logic 0.
Table 129 EFM Clock Configuration Register 3 (address 36H) - READ/WRITE
7
6
5
4
3
2
0
IntegVal.6 IntegVal.5 IntegVal.4 IntegVal.3 IntegVal.2
1
Kp.2
Kp.1
Kp.0
Ki.3
Ki.2
1
IntegVal.1
Ki.1
0
IntegVal.0
Ki.0
Table 130 Selection of coefficient Kp
Kp.2
Kp.1
Kp.0
0
0
0
4
0
0
1
2
0
1
0
1
0
1
1
0.5
1
0
0
0.25
COEFFICIENT Kp
Table 131 Selection of the coefficient Ki
Ki.3
Ki.2
Ki.1
0
0
0
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
Ki.0
0
0
1
1
1
0.5
1
0.25
1
0.125
1
0.0625
1
0.03125
1
0.015625
1
0.0078125
COEFFICIENT Ki
2000 Mar 21
57
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