SI1005-C-GM Silicon Laboratories Inc, SI1005-C-GM Datasheet - Page 246

• Manufacturer Part Number: SI1005-C-GM
• Description: IC TXRX MCU + EZRADIOPRO
• Manufacturer: Silicon Laboratories Inc

Specifications of SI1005-C-GM

• Package / Case: 42-QFN
• Frequency: 240MHz ~ 960MHz
• Data Rate - Maximum: 256kbps
• Modulation Or Protocol: FSK, GFSK, OOK
• Applications: General Purpose
• Power - Output: 13dBm
• Sensitivity: -121dBm
• Voltage - Supply: 0.9 V ~ 1.8 V
• Current - Receiving: 18.5mA
• Current - Transmitting: 30mA
• Data Interface: PCB, Surface Mount
• Memory Size: 32kB Flash, 4kB RAM
• Antenna Connector: PCB, Surface Mount
• Number Of Receivers: 1
• Number Of Transmitters: 1
• Wireless Frequency: 240 MHz to 960 MHz
• Interface Type: UART, SMBus, SPI, PCA
• Output Power: 13 dBm
• Operating Supply Voltage: 0.9 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Maximum Supply Current: 4.1 mA
• Minimum Operating Temperature: - 40 C
• Modulation: FSK, GFSK, OOK
• Protocol Supported: C2, SMBus
• Core: 8051
• Program Memory Type: Flash
• Program Memory Size: 32 KB
• Data Ram Size: 4352 B
• Supply Current (max): 4.1 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Operating Temperature: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1875-5

Si1000/1/2/3/4/5
Add R/W
The integer part (N) is determined by fb[4:0]. Additionally, the output frequency can be halved by connect-
ing a ÷2 divider to the output. This divider is not inside the loop and is controlled by the hbsel bit in "Regis-
ter 75h. Frequency Band Select". This effectively partitions the entire 240–960 MHz frequency range into
two separate bands: High Band (HB) for hbsel = 1, and Low Band (LB) for hbsel = 0. The valid range of
fb[4:0] is from 0 to 23. If a higher value is written into the register, it will default to a value of 23. The integer
part has a fixed offset of 24 added to it as shown in the formula above. Table 23.3 demonstrates the selec-
tion of fb[4:0] for the corresponding frequency band.
After selection of the fb (N) the fractional component may be solved with the following equation:
fb and fc are the actual numbers stored in the corresponding registers.
246
73
74
75
76
77
R/W
R/W
R/W Frequency Band
R/W Nominal Carrier
R/W Nominal Carrier
Description
Frequency 1
Frequency 0
Function/
Frequency
Frequency
Offset 1
Offset 2
Select
fb[4:0] Value
0
1
2
3
4
5
6
7
8
fc
f
[
15
TX
:

fc[15]
fo[7]
fc[7]
] 0
D7
Table 23.3. Frequency Band Selection
10

MHz
f
carrier

 

10
24
25
26
27
28
29
30
31
32
N
MHz
sbsel
fc[14]
( *
fo[6]
fc[6]

D6
10
hbsel
( *
MHz
f
TX
hbsel

fc[13]
hbsel
fo[5]
fc[5]
Rev. 1.0
240–249.9 MHz
250–259.9 MHz
260–269.9 MHz
270–279.9 MHz
280–289.9 MHz
290–299.9 MHz
300–309.9 MHz
310–319.9 MHz
320–329.9 MHz
) 1
D5

(
( *
hbsel
hbsel=0

) 1
fb
[

: 4
fc[12]
fo[4]
fb[4]
fc[4]

D4
Frequency Band
fb
) 1
] 0
[
: 4


(
24
] 0
N
fc[11]
fo[3]
fb[3]


fc[3]

D3
24
F
fc
480–499.9 MHz
500–519.9 MHz
520–539.9 MHz
540–559.9 MHz
560–579.9 MHz
580–599.9 MHz
600–619.9 MHz
620–639.9 MHz
640–659.9 MHz
64000
)
[

 

15
*
hbsel=1
64000
:
fc[10]
] 0
fo[2]
fb[2]
fc[2]
D2
)
fo[1] fo[0]
fo[9] fo[8]
fb[1] fb[0]
fc[9] fc[8]
fc[1] fc[0]
D1
D0 POR Def.
BBh
00h
00h
35h
80h