SI5338-EVB Silicon Laboratories Inc, SI5338-EVB Datasheet - Page 23

• Manufacturer Part Number: SI5338-EVB
• Description: BOARD EVALUATION SI5338
• Manufacturer: Silicon Laboratories Inc

Specifications of SI5338-EVB

• Main Purpose: Timing, Clock Generator
• Embedded: No
• Utilized Ic / Part: Si5338
• Primary Attributes: 160 kHz to 700 MHz in LVPECL/LVDS,
• Secondary Attributes: USB Based GUI to Program, I2C/SMBus Compatible Interface, 1.8, 2.5, or 3.3 V
• For Use With/related Products: Si5330/34/38 Family
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 336-1556

3.7.2. Enabling Outputs through the I
Output enable can be controlled through the I
interface. As shown in Figure 13, register 230[3:0]
allows control of each individual output driver. Register
230[4] controls all drivers at once. When register 230[4]
is set to disable all outputs, the individual output
enables will have no effect. Registers 110[7:6], 114[7:6],
118[7:6], and 112[7:6] control the output disabled state
as tri-state, low, high, or always on. If always on is set,
that output will always be on regardless of any other
register or chip state. In addition, the always on mode
must be selected for an output that is fed back in a Zero
Delay application.
Figure 12. Output Enable Pin (Si5338K/L/M)
Figure 13. Output Enable Control Registers
1 = Disabled
0 = Enabled
118
230
110
114
122
0 = enable
1 = disable
00 = disabled tri-state
01 = disabled low
10 = disabled high
11 = always enabled
CLK0 OEB
CLK1 OEB
CLK2 OEB
CLK3 OEB
7
7
7
7
7
OEB
State
State
State
State
6
6
6
6
6
5
5
5
5
5
OEB
All
4
4
4
4
4
Bits reserved
OEB
Control
3
3
3
3
3
3
Control & Memory
Bits used by other functions
OEB
2
2
2
2
2
2
(OTP)
NVM
OEB
1
1
1
1
1
1
2
RAM
C Interface
OEB
0
0
0
0
0
0
2
Rev. 1.0
C
Si5338
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