SA2400ABE NXP Semiconductors, SA2400ABE Datasheet - Page 20

• Manufacturer Part Number: SA2400ABE
• Manufacturer: NXP Semiconductors

Specifications of SA2400ABE

• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Package Type: LQFP
• Product Depth (mm): 7mm
• Product Length (mm): 7mm
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Lead Free Status / Rohs Status: Not Compliant

1. The synthesizer registers (addresses 00 to 03) cannot be read.
2. After programming register 0x01 it is necessary to also program register 0x00 to load the content of FC[7:0] into the internal working register.
3. After programming register 0x00 it is necessary to program some other register (e.g., 0x04) to avoid keeping the charge pump current
4. After running the VCOCALIB mode, it is necessary to re-program registers 0x00 through 0x03.
Philips Semiconductors
14.4 3-wire bus control register map
14.4.1 Data Format
Table 12. Format of programmed data
Table 13. Overview
NOTES:
Table 14. Address 00: Synthesizer Register A
Note: Bits 22, 23 not used.
Main divider register
Table 15. Address 01: Synthesizer Register B
Note: Bits 22, 23 not used.
2002 Nov 04
Address
00
01
02
03
04
05
06
07
08
Bit
Name
Default
Bit
FM
NF[2:0]
N[15:0]
Bit
Name
Default
Bit
R[9:0]
L[1:0]
ON
FC[7:0]
23
Single chip transceiver for 2.45 GHz ISM band
setting in php-speedup mode.
22
FM
21
21
21
0
0
Description
Synthesizer: Main divider settings WRITE ONLY
Synthesizer: Reference divider and fractional compensation WRITE ONLY
Synthesizer: charge pump current and additional division WRITE ONLY
Synthesizer: test modes WRITE ONLY
Main operation modes, filter tuner, other controls
Rx AGC adjustment settings
Manual receiver control settings
Transmitter settings
VCO settings (only bits 0 through 9)
Description
Fractional modulus select. 0–>/8; 1–>/5; default: 0
Fractional increment value (0 to 7); default: 4
Main divider division ration (512 to 65535); default: 615
Description
Reference divider ratio (4 to 1023); default: 11
lock detect mode
00–> inactive
01–> inactive
10–>lock detect normal mode
11–>inactive
Power On/Off 1: as defined by chip mode (register 0x04) 0: inverted chip mode control
Fractional compensation charge pump current DAC (0 to 255); default: 80
20
20
20
1
0
NF[2:0]
19
19
19
0
0
LAST IN (MSB)
18
18
18
0
0
17
17
17
0
0
R[9:0]
16
16
16
0
0
15
15
15
0
1
14
14
14
0
0
13
13
13
0
1
12
12
12
0
1
20
11
11
11
1
1
L
10
10
10
N[15:0]
0
0
ON
9
9
0
9
1
8
8
1
8
1
7
1
7
7
0
FIRST IN (LSB)
6
6
0
6
1
5
5
0
5
0
4
4
1
4
FC[7:0]
1
3
1
3
3
0
SA2400A
2
2
1
2
0
Product data
1
1
unused
0
1
0
0
0
0
0
0