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參數(shù)資料
| 型號： | TDA1373H |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | General Digital Input GDIN |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | 14 X 20 MM, 2.70 MM HEIGHT, PLASTIC, SOT-319-1, QFP-64 |
| 文件頁數(shù)： | 21/40頁 |
| 文件大小： | 308K |
| 代理商： | TDA1373H |
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1996 Jul 17
21
Philips Semiconductors
Product specification
General Digital Input (GDIN)
TDA1373H
handbook, full pagewidth
CD subcode frame sync (BS)
MLB965
Buffer Contents Valid (BCV)
Set Buffer Free (SBF)
microcontroller
data communication
(LD, CL, DA)
OK, buffer valid
set buffer free again
buffer
completely
read
start to
read
buffer
request to read (hold buffer)
Fig.12 C, U and CD-Q user request procedure.
T
HE MICROCONTROLLER INTERFACE
/
STAND
-
ALONE CONTROL BLOCK
If pin SA is LOW, a microcontroller controls and monitors
the operation of the GDIN and reads C, U and CD-Q
information. A 3-line bidirectional serial interface with data
(DA), load (LD) and clock (CL) line is present. For both a
write and read operation the microcontroller generates the
clock and load signals.
A single byte is written by setting the LD signal active
HIGH during transmission of the serial data. At the rising
edge of the serial clock, the GDIN clocks in the serial data.
At the end of the 8-bit data word a ‘load pulse’ should be
given to enable the internal serial-to-parallel conversion.
Write operations are always two-byte operations. First, the
register address is sent to the GDIN, then the
corresponding data is send (see Fig.13):
1.
Write Address.
2.
Write Data byte.
A single byte read-operation is initialized by pulling LD
LOW. When the serial clock is started, the GDIN will
transmit serial data on the DA line. The information is read
by the microcontroller at the rising edges of the clock CL.
Read operations are at least two-byte operations with
multi-byte reads possible. The address is sent to the GDIN
and then one or more bytes are read from the GDIN with
each additional byte coming from an incrementally higher
address:
1.
Write Address.
2.
Read Data byte.
3.
Read Data byte.
4.
Read Data byte.
5.
Etc.
Multi-read operations continue to cycle through the given
Register Address Range until the read operation is
completed.
If pin SA is HIGH, the GDIN can operate without an
external microcontroller. In this event, only the SRC mode
and the AD/DA mode can be selected. A number of pins
are reconfigured to control some of the internal switches of
the device. For more information see Chapter “Pinning”
and Section “Controlling the GDIN”.
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