SI4010-C2-GT Silicon Laboratories Inc, SI4010-C2-GT Datasheet - Page 124

• Manufacturer Part Number: SI4010-C2-GT
• Description: IC TX 27-960MHZ FSK 3.6V 10MSOP
• Manufacturer: Silicon Laboratories Inc
• Series: EZRadio®r
• Type: Crystalless SoC RF Transmitterr

Specifications of SI4010-C2-GT

• Package / Case: 10-MSOP
• Mfg Application Notes: SI4010 Calculator Spreadsheet AppNote
• Frequency: 27MHz ~ 960MHz
• Applications: Garage Openers, RKE, Security Alarms
• Modulation Or Protocol: FSK, OOK
• Data Rate - Maximum: 100 kBaud
• Power - Output: 10dBm
• Current - Transmitting: 19.8mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Memory Size: 4kB RAM
• Features: 8051 MCU Core, Crystal-less Operation
• Voltage - Supply: 1.8 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Operating Frequency: 27 MHz to 960 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 1.8 V to 3.6 V
• Supply Current: 14.2 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 336-1997-5

Si4010-C2
31.1. Register Description
SFR Definition 31.1. CLKOUT_SET
SFR Address = 0x8F
124
Name CLKOUT_
Reset
Bit
Type
7
6
Bit
CLKOUT_
CLKOUT_
Name
CLR
INV
CLR
R/W
7
0
CLKOUT Clear.
Write 1 to this bit clears the generated clock divider. The generated clock output is
forced to 0.
Reading this bit has CLKOUT_IDLE meaning. If read as 1 then it indicates that the
clock divider generator is idle. It can be used to wait for the clock to get idle after the
user clock output was disabled by PORT_SET.PORT_CLKEN=0. If this bit is read as
0 the clock division generator by factor 2 and above is running and the current user
clock period is still in progress.
The user could use this bit to synchronously switch the CLKOUT_DIV division factor,
but it is not necessary. The synchronous clock period switching is built in the hard-
ware. See the CLKOUT_DIV field description of this register. To switch the clocks
immediately without waiting for the current period to end, write 1 to this bit. The write
1 to this bit can be combined with setting the new CLKOUT_DIV value in this register
at the same time.
CLKOUT Inversion.
Invert the generated clock. The inverter is at the very end of the clock generation
chain. Normally, if this bit is 0, if the generated clock is disabled the output is at 0.
With this bit set to 1 the output is inverted, therefore the generated clock stops at 1.
This bit must be set before customer clock is enabled to the port output by setting
PORT_SET.PORT_CLKEN=1. If changed later the clock inversion takes effect imme-
diately with possibility of short clock pulse being generated at the clock output.
CLKOUT_
R/W
INV
6
0
CLKOUT_
SYM
R/W
5
0
R/W
Rev. 1.0
4
0
Function
R/W
3
0
CLKOUT_DIV[4:0]
R/W
2
0
R/W
1
0
R/W
0
0