PCD5008 datasheet(11/64 Pages) PHILIPS

11 / 64 page

1998 Jun 17

Philips Semiconductors

Product speciﬁcation

FLEX

™ Pager Decoder

PCD5008

8.3.5

SPI PACKET FORMAT

SPI data packets consist of an 8-bit ID (byte 3), followed

by 24 bits of information (byte 2 to byte 0). See Table 1,

note that bit 7 of byte 3 is the first bit on the bus.

8.3.6

SPI TIMING

See Fig.8 and Chapter 11 for the timing specifications of

the SPI.

Table 1

Packet bit assignments

BYTE

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

BIT 1

BIT 0

D31

D30

D29

D28

D27

D26

D25

D24

D23

D22

D21

D20

D19

D18

D17

D16

D15

D14

D13

D12

D11

D10

D7D6D5D4D3D2D1D0

Fig.8 SPI timing.

handbook, full pagewidth

MBK032

tSCKL

tSCKH

tACC(o)

Zo(off)

tDOV

th(i)(D)

tsu(i)(D)

Tcy(SCK)

tLEAD1

tLEAD2

td(SS-READY)

tREADYH

tLAG1

tLAG2

tSSH

READY

SCK

MISO

D31

MOSI

th(o)(D)

to(dis)

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