STA015 datasheet(34/44 Pages) STMICROELECTRONICS

34 / 44 page

The STA015 contains 56 consecutive 8-bit regis-

ters corresponding to the maximum number of

ancillary data that may be contained in MPEG

frame. The ANCCOUNT_L and ANCOUNT_H

registers contain the number of ancillary data bits

available within the current MPEG frame.

To perform ancillary data reading a status regis-

ter (0xB6 - INTERRUPT_STATUS_REGISTER)

is available: bit 0 of this register should be polled

by the microcontroller in order to understand

when new data are available.

0x7E

ANC_DATA_1

----

---------

----

---------

----

---------

----

---------

0xB5

ANC_DATA_56

0xB6

ISR

5.3. I/O CELL DESCRIPTION (pinout relative to TQFP44 package)

1) CMOS Tristate Output Pad Buffer, 4mA, with Slew Rate Control / Pin numbers 2, 4, 13, 27, 33, 42, 44

D98AU904

OUTPUT PIN

MAX LOAD

100pF

2) CMOS Bidir Pad Buffer, 4mA, with Slew Rate Control / Pin numbers 3, 31

D98AU905

INPUT PIN CAPACITANCE

OUTPUT

MAX

LOAD

5pF

100pF

3) CMOS Inpud Pad Buffer / Pin numbers 24, 26, 32, 34, 36, 40

D98AU906

INPUT PIN

CAPACITANCE

3.5pF

4) CMOS Inpud Pad Buffer with Active Pull-Up / Pin numbers 22, 25, 28, 38

D98AU907

INPUT PIN

CAPACITANCE

3.5pF

5) CMOS Schmitt Trigger Bidir Pad Buffer with active Pull-up, 4mA, with slew rate control /

Pin numbers 14, 16, 18, 20, 35, 37, 39, 41, 43

D00AU1150

INPUT PIN CAPACITANCE

OUTPUT

MAX

LOAD

5pF

100pF

STA015-STA015B-STA015T

34/44

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