Rainbow Electronics MAX9489 - Manual (Page 6)

MAX9489
Multiple-Output Network Clock Generator
6 _______________________________________________________________________________________
PIN NAME FUNCTION
1, 29 GND Digital Ground
2 SCL Serial Clock Input. Serial interface clock.
3 SDA Serial Data I/O. Data I/O of serial interface.
4 SEL
Frequency Select for CLK1. Selects the frequency for CLK1 at power-up. SEL is a tri-level input. Force
SEL high for CLK1 = 100MHz. Leave SEL open for CLK1 = 125MHz. Force SEL low for CLK1 = 133MHz.
5 AV DD Power-Supply Input for Analog Circuits
6 X1
7 X2
Crystal Connection or Clock Input. If using a 25MHz crystal, connect it to X1 and X2. If using a reference
clock, connect the clock signal to X1, and leave X2 floating. See the Typical Operating Circuit.
8 AGND Analog GND
9 CLK1 Clock 1 Output
10 CLK2 Clock 2 Output
11 CLK3 Clock 3 Output
12, 16, 20,
24, 28, 32
V DD Power-Supply Input for Digital Circuits
13 CLK4 Clock 4 Output
14 CLK5 Clock 5 Output
15 CLK6 Clock 6 Output
17 CLK7 Clock 7 Output
18 CLK8 Clock 8 Output
19 CLK9 Clock 9 Output
21 CLK10 Clock 10 Output
22 CLK11 Clock 11 Output
23 CLK12 Clock 12 Output
25 CLK13 Clock 13 Output
26 CLK14 Clock 14 Output
27 CLK15 Clock 15 Output
30 SA0
31 SA1
Address-Select Inputs for Serial Interface. SA0 and SA1 select the serial interface address, as shown in
Table 1. SA0 and SA1 are tri-level inputs, making nine possible address combinations.
EP — Exposed pad. Connect to GND.
Pin Description