ATR1841 Datasheet, PDF (5/8 Pages) ATMEL Corporation – Front Monitor Diode for Blu-ray/HD-DVD/DVD/CD with TWI

ATR1841 [Preliminary]
6. Two-wire Interface (TWI)
6.1 Slave Address
MSB
(ADS)
LSB
0
01110
0
R/W = 0
0
01110
1
R/W = 0
Pin ADS = low (GND)
Pin ADS = high (V_CC)
6.2 Data
MSB
LSB
m1 m2 g1 g2 g3 g4 g5 g6
6.3 Mode Setting
The first two bits select the mode/gain level.
Table 6-1.
m1
1
1
0
0
Mode Selection Register
m2
1
0
1
0
Mode Select
High gain
Middle gain
Low gain
Sleep
6.4 Gain Setting
The last six bits are used to finely adjust the gain by ±6 dB
Table 6-2. Gain Selection Register
g1
g2
g3
g4
g5
g6
1
1
1
1
1
1
…
1
0
0
0
0
0
…
0
0
0
0
0
0
Gain
+6 dB
…
0 dB
…
–6 dB
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9103AS–DVD–08/07