參數(shù)資料
型號(hào)： PCD5008
廠商： NXP Semiconductors N.V.
英文描述： FLEX Pager Decoder
中文描述： FleX創(chuàng)建傳呼機(jī)解碼器
文件頁(yè)數(shù)： 9/64頁(yè)
文件大?。?/td> 341K
代理商： PCD5008
1998 Jun 17
9
Philips Semiconductors
Product specification
FLEX
Pager Decoder
PCD5008
8.3.3
SPI
TRANSFER INITIATED BY THE HOST
The following steps occur when the host initiates an SPI
packet transfer, see Fig.5 for event timings:
1.
The host selects the PCD5008 by driving the
SS pin LOW.
2.
The PCD5008 indicates that it is ready to start the
SPI transfer by driving the READY pin LOW.
3.
The host clocks each of the 32 bits of the SPI packet
by pulsing SCK. Both the host and the PCD5008
sample data on the rising edge of SCK. Packets are
sent MSB first.
4.
The PCD5008 pulls the READY line HIGH, to indicate
that the transfer is complete.
The host waits until the READY line is pulled HIGH,
then de-selects the PCD5008 SPI by driving the
SS pin HIGH.
The first 5 steps are repeated for each additional
packet.
5.
6.
Fig.5 Typical multiple SPI transfers initiated by the host.
handbook, full pagewidth
MGK262
MISO
MOSI
SCK
Zo(off)
(1)
(5)
(4)
(2)
(3)
D31
D1
D0
D31
D1
D0
Zo(off)
D31
D1
D0
D31
D1
D0
Zo(off)
Zo(off)
D31
D1
D0
D31
D1
D0
READY
Numbers within parenthesis refer to sequence numbers, see Section 8.3.3.
8.3.4
SPI
TRANSFER INITIATED BY THE DECODER
The following steps occur when the PCD5008 initiates an
SPI packet transfer, see Fig.6 for event timings:
1.
The PCD5008 initiates the SPI transfer by driving the
READY pin LOW.
2.
If the PCD5008 is not already selected, the host
selects the PCD5008 SPI by driving the SS pin LOW.
3.
The host clocks each of the 32 bits of the SPI packet
by pulsing SCK. Both the host and the PCD5008
sample data on the rising edge of SCK. Packets are
sent MSB first.
The PCD5008 pulls the READY line HIGH, to indicate
that the transfer is complete.
The host may then either de-select the SPI interface of
the PCD5008 (Fig.7) by driving the SS pin HIGH or
maintain SS LOW to continue sending packets to the
PCD5008.
4.
5.
相關(guān)PDF資料
PDF描述
PCD5008H FLEX Pager Decoder
PCD5013 FLEX roaming decoder II
PCD5013H FLEX roaming decoder II
PCD5032 ADPCM CODEC for digital cordless telephones
PCD5032H ADPCM CODEC for digital cordless telephones
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCD5008H 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:FLEX Pager Decoder
PCD5008HBD-T 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication Decoder
PCD5013 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:FLEX roaming decoder II
PCD5013H 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:FLEX roaming decoder II
PCD5032 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:ADPCM CODEC for digital cordless telephones
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