TEA5764UK-G NXP Semiconductors, TEA5764UK-G Datasheet - Page 28

• Manufacturer Part Number: TEA5764UK-G
• Description: Tuners FM RADIO WITH RDS
• Manufacturer: NXP Semiconductors

Specifications of TEA5764UK-G

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: TEA5764UK/N2,027

Philips Semiconductors
TEA5764UK_2
Product data sheet
Fig 11. Normal DAV-C timing diagram
Fig 12. DAV-C timing diagram, late read of BL, BP register
read access
overflow bit
BP register
BL register
read access
DAVFLG
(case 2)
(case 2)
DAVFLG
decoded
INTX
(case 1)
data
being
INTX
no read on INTX
so B
t
INT_RD
A
t
1
INTX
A
1
Rev. 02 — 9 August 2005
1
D
C
will be lost
t
0
0
INTX
DAVFLG not cleared as no read performed
DAVFLG reset when
1
would have been copied
21.9 ms
st
= 10 ms
t
21.9 ms
B
read
new block
1
D
A
B
2 new blocks have arrived in BL/BP (C
has entered the decoder buffer. Hence, DOVF is set again.
To prevent this, an extra read must be performed after reading (a)
1
0
1
INTX cleared at end read INTMSK
DAVFLG cleared at end read BP register
and forced to zero till end read of RDS 4R
occurred at (a). DOVF bit set until the next read of BP
dashed line shows what would happen if no read
C
1
C
register, however D1, A2 would be lost
1
B
before C
1
instant copy C
to BL, and BL to BP just before D
decoded due to read action
copied to BL register shortly
D
DAVFLG set when 2
in decoder buffer
1
D
BL register copied to
BP register and C
BL register
1
(a)
1
decoded
C
A
1
1
1
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
t
read
1
, D
A
from decoder buffer
2
1
A
) and a new block (A
2
TEA5764UK
D
C
1
nd
1
1
to
new block
instant copy of A
from decoder
buffer to BL, and
B
A
D
001aab474
2
BL to BP
B
2
1
001aab473
2
1
FM radio + RDS
2
)
2
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