micrf500blq Micrel Semiconductor, micrf500blq Datasheet - Page 14

• Manufacturer Part Number: micrf500blq
• Description: 700mhz To 1.1ghz Radiowire? Rf Transceiver
• Manufacturer: Micrel Semiconductor

MICRF500
Programming
A two-line bus is used to program the circuit; the two lines
being CLKIN and REGIN. The 2-line serial bus interface
allows control over the frequency dividers and the selective
powering up of Tx, Rx and Synthesizer circuit blocks. The
MICRF500
p1 – p6
OutS1
Ref2
Pa1
p59
p67
p75
A1
p7 - p12
OutS0
Ref1
Pa0
p60
p68
p76
A0
p13 – p24
Mod1
Ref0
p61
p69
p77
N1
Gc
p25 – p36
Table 1. Bit Allocation
Cpmp1
ByLNA
Mod0
p62
p70
p78
N0
14
interface consists of an 80-bit programming register. Data is
entered on the REGIN line with the most significant bit first.
The first bit entered is called p1, the last one p80. The bits in
the programming register are arranged as shown in Table 1.
p37 – p46
Cpmp0
Ref6
p63
p71
p79
M1
RT
p47 – p56
Ref5
p64
p72
Fc1
p80
M0
Pu
RxFilt
Ref4
p57
p65
p73
Fc0
—
—
March 2003
OutS2
Ref3
Pa2
p58
p66
p74
—
—
Micrel