DS90UA102-Q1 Datasheet, PDF (30/46 Pages) Texas Instruments – DS90UA102-Q1 Multi-Channel Digital Audio Link

DS90UA102-Q1
SNLS442A – JULY 2013 – REVISED SEPTEMBER 2013
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SDA
SCL
S
START condition, or
START repeat condition
P
STOP condition
Figure 21. Start and Stop Conditions
IDx Address Decoder on the Deserializer
The IDx pin (Figure 22) on the Deserializer is used to decode and set the I²C address of the Deserializer. There
are 4 possible I²C addresses that can be set on the Deserializer. The pin must be pulled to V_DD (1.8V, not V_DDIO)
with a 10 kΩ resistor and a pull down resistor R_ID) of the recommended value to set the I²C address of the
Deserializer (Table 2). The recommended maximum resistor tolerance is 1%.
1.8V
HOST
SCL
SDA
V_DDIO
RPU
RPU
10k3
R_ID
IDx
Deserializer
SCL
SDA
To other Devices
Figure 22. IDx Address Select
Table 2. Resistor Values for IDx on DS90UA102-Q1 Deserializer
Resistor RID (kΩ)
(1%Tolerance)
0
3
11
100
IDx Resistor Value
7-Bit Address
0x60
0x61
0x62
0x63
8-Bit Address (0 appended)
0xC0
0xC2
0xC4
0xC6
Note: The I²C address of the Deserializer can also be set using 0x00[7:1] once 0x00[0] is set to 1.
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