mc68181 Freescale Semiconductor, Inc, mc68181 Datasheet - Page 63

• Manufacturer Part Number: mc68181
• Description: Signal Processor
• Manufacturer: Freescale Semiconductor, Inc

MOTOROLA
READY
READY
Figure B-3 Multiple Packet Communications Initiated by the FLEX chip IC with No De-select
MOSI
MISO
MOSI
MISO
SCK
SCK
SS
SS
Figure B-2 Typical Multiple Packet Communications Initiated by the FLEX chip IC
When the host is reading a packet from the FLEX chip IC, it must send a valid packet
to the FLEX chip IC. If the host has no data to send, it is suggested that the host send
a Checksum Packet with all of the data bits set to 0 in order to avoid disabling the
FLEX chip IC. (See Checksum Packet on page B-6.)
Figure B-3 on page B-3 illustrates that it is not necessary to de-select the FLEX chip
IC between packets when the packets are initiated by the FLEX chip IC.
1
2
High Impedance State
High Impedance State
3
Freescale Semiconductor, Inc.
D31
D31
D31
D31
For More Information On This Product,
MC68181 Technical Data Sheet
D1
D1
D1
D1
4
Go to: www.freescale.com
D0
D0
D0
D0
Packet Communication Initiated by the FLEX chip IC
D31
D31
D31
D31
D1
D1
D1
D1
D0
D0
D0
D0
D31
D31
D31
D31
D1
D1
D1
D1
D0
D0
D0
D0
MC68181
AA1230
AA1231
B-3