SI4010-B1-GT Silicon Laboratories Inc, SI4010-B1-GT Datasheet - Page 55

• Manufacturer Part Number: SI4010-B1-GT
• Description: IC TX 27-960MHZ FSK 3.6V 10MSOP
• Manufacturer: Silicon Laboratories Inc
• Series: EZRadio®r
• Type: ISM Transmitterr

Specifications of SI4010-B1-GT

• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• 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: 10 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 336-1973-5

15. Crystal Oscillator (XO)
The crystal oscillator produces an accurate clock reference for applications demanding a high-accuracy
transmit carrier frequency. It uses a 1-pin crystal oscillator circuit (Colpitt's oscillator) and the output is con-
nected to the frequency counter.
15.1. Register Description
XREG Definition 15.1. bXO_CTRL
XREG Address = 0x4016
Name Reserved
Reset
Bit
7:4
3:2
Type
1
0
Bit
LOWCAP
Reserved
XO_ENA
TST[1:0]
Name
XO_
XO_
7
0
Measurement of the XO Regenerative Amplifier Bias Current.
0: No connection
1: Sense
2: Force
3: Sense and force
XO Low Capacitance.
Bit should be set for crystals that require less than 14 pF of total capacitance.
0: Crystals with 14 pF or more of total capacitance.
1: Crystals with less than 14 pF of total capacitance.
Enable XO.
Note that operation of the XO requires that the bandgap be enabled with the System
Module Function API. The input XO_CKGOOD status bit is in the SFR SYSTEM reg-
ister.
0: Crystal oscillator disabled.
1: Crystal oscillator enabled.
Reserved
6
0
Reserved
5
0
Reserved
Rev. 0.5
4
0
Function
3
0
XO_TST[1:0]
R/W
2
0
XO_LOW
CAP
R/W
1
0
Si4010
XO_ENA
R/W
0
0
55