TDA5051 Datasheet, PDF (13/28 Pages) NXP Semiconductors – Home automation modem

Philips Semiconductors
Home automation modem
Product specification
TDA5051
Table 2 Calculation of parameters depending of the clock frequency
SYMBOL
PARAMETER
f_osc
oscillator frequency
f_CLKOUT
f_cr
t_su
clock output frequency
carrier frequency/digital filter
tuning frequency
set-up time of the shaped burst
t_h
hold time of the shaped burst
t_W(DI)(min) minimum pulse width of DATA_IN
signal
t_{W(burst)(min)} minimum burst time of V_O(DC)
signal
t_c(AGC)
AGC time constant
t_su(demod) demodulation set-up time
t_h(demod) demodulation hold time
CONDITIONS
UNIT
with on-chip oscillator: frequency of the crystal quartz; with Hz
external clock: frequency of the signal applied at OSC1
1_⁄2fosc
Hz
1_⁄64fosc
Hz
2-f--_c-3--r
or
1472
f_osc
s
2-f--_{c-3--r or} 1--f--4_o---s7---_c-2-
s
t_su + _f--1c---_r
s
t_W(DI)(min) + t_h
s
2--f--5_o---s1---_c-4-
s
3--f--7_o---s0---_{c-0- (≈max.)}
s
3--f--0_o---s5---_{c-0- (≈max.)}
s
handbook, full pagewidth
TXOUT
tW(burst)
tW(burst)(min)
VO(DC)
tsu
th
0
DATAIN
tW(DI)
tW(DI)(min)
(1) t_W(DI) > t_W(DI)(min)
(2) t_W(DI)(min) = t_su + _f--1c---_r
(3) t_W(DI)(min) < t_su; wrong operation
(1)
(2)
(3)
MGK837
Fig.8 Relationship between DATA_IN and TX_OUT (see Table 3).
1997 Sep 19
13