BOBCAT Hardware User’s Manual
Imperx, Inc.
Rev. 1.0
6421 Congress Ave.
5/4/2010
Boca Raton, FL 33487
+1 (561) 989-0006
117 of 212
1
st
byte: 0x06 (Acknowledge)
57
04
10
11
22
33
44
06
Rx
Tx
Wr_Cmd
Addr
Data
Ack
Figure 3.2 – Normal write cycle
Write Not-acknowledge (2 Bytes): <Nak> <
Error Code
>
1
st
byte: 0x15 (Not-acknowledge)
2
nd
byte:
<
XX
>
(Nck Error Code. See Error Code Description section)
47
04
10
11
22
15
Rx
Tx
Cmd
Nak
01
Invalid Cmd
These characters are dropped
33
44
* * * *
All subsequent Rx characters are
dropped until the receipt of a valid
( 52 or 57 ) command
* * * *
Figure 3.3a – Invalid command error
Tx
57
04
10
11
22
15
Rx
Wr_Cmd
Addr
Nak
02
Timeout
t=0
t=100 mS
33
44
These characters
are dropped
* * * *
* * * *
All subsequent Rx characters are
dropped until the receipt of a valid
( 52 or 57 ) command
Figure 3.3b – Rx timeout error
Example
: Write to register address 0x0410, data value = 0x11223344:
