zl10355 Zarlink Semiconductor, zl10355 Datasheet - Page 17

• Manufacturer Part Number: zl10355
• Description: Nordig Unified Dvb-t Cofdm Terrestrial Demodulator For Pc-tv And Hand-held Digital Tv Dtv
• Manufacturer: Zarlink Semiconductor

3.2.2
The MPEGEN bit in the CONFIG register must be set low to enable the MPEG data. The maximum movement in
the packet synchronization byte position is limited to ±1 output clock period. MOCLK will be a continuously running
clock once symbol lock has been achieved, and is derived from the symbol clock. MOCLK is shown in Figure 7 with
MOCLKINV = ‘1’, the default state, see register 0x50.
All output data and signals (MDO[7:0], MOSTRT, MOVAL & BKERR) change on the negative edge of MOCLK
(MOCLKINV = 1) to present stable data and signals on the positive edge of the clock.
A complete packet is output on MDO[7:0] on 188 consecutive clocks and the MDO[7:0] pins will remain low during
the inter-packet gaps. MOSTRT goes high for the first byte clock of a packet. MOVAL goes high on the first byte of
a packet and remains high until the last byte has been clocked out. BKERR goes low on the first byte of a packet
where uncorrectable bytes are detected and will remain low until the last byte has been clocked out.
3.2.3
Maximum delay conditions: VDD = 3.0V, CVDD = 1.62V, Tamb = 85
Minimum delay conditions: VDD = 3.6V, CVDD = 1.98V, Tamb = -40
MOCLK frequency = 45.06 MHz.
MPEG Data Output Signals
MPEG Output Timing
MOCLKINV=1
MOCLK
MDO7:0
MOSTRT
MOVAL
BKERR
1st byte packet n
Figure 7 - MPEG Output Data Waveforms
Tp
Zarlink Semiconductor Inc.
188 byte packet n
ZL10355
17
o
o
C, Output load = 10pF.
C, Output load = 10pF.
Ti
1st byte packet n+1
Data Sheet