S1A0903X01-Q0R0 Samsung Electronics, S1A0903X01-Q0R0 Datasheet - Page 30

• Manufacturer Part Number: S1A0903X01-Q0R0
• Description: AM/FM 1 Chip Tuner with PLL
• Manufacturer: Samsung Electronics

S1A0903X01
30
frequency
LOCK bit in serial data
LOCK state on DO pin
LOCK bit
DO pin
DSR's
Error
LOCK bit in serial data shows UNLOCK because VCO frequency isn't stable (Figure. 14 A)
needs several LOCK check in order to get more reliable result.
Only when DOC[1:0]=1 and UL[1:0]
needs several LOCK check in order to get more reliable result.
VCO
Data
CE
wait at least several cycle and check LOCK again(Figure. 14 B)
LOCK
Old data
data in
Figure 14. Lock detection timing diagram
0, LOCK state can be checked on DO pin
UNLOCK
New data ( OS[1:0] or N[15:0] is changed )
AM/FM 1CHIP TUNER WITH PLL
data out
A
LOCK
data out
B