Datasheet

PICkit™ Serial Analyzer Firmware
© 2009 Microchip Technology Inc. DS51647C-page 105
FIGURE 11-2:
11.7.1.1.1 Operation
The Default mode requires very little configuration/initialization.
1. Issue Cold Start
2. Write Configuration Block (with Comm = I
2
CS and Mode = 0)
3. Issue Warm Start
11.7.1.2 MODE: INTERACTIVE
The Interactive mode provides the greatest flexibility but at the expense of transaction
latencies. The host monitors I
2
C transactions near real time using EVENT markers.
Should a transaction require ‘read’ data (to return to the I
2
C master), the I
2
C bus is
suspended (by holding the clock line low) until the host supplies data via the standard
‘script’ buffer.
FIGURE 11-3:
Comm I
2
CS
CBUF3
CBUF2
CBUF1
Status
Control
Exec
PICkit™ Serial Analyzer
USB
H
O
S
T
D
E
V
I
C
E
I
2
C™
B
A
A – event data
B – I
2
C™ read data
Comm
I
2
CS
CBUF3
CBUF2
CBUF1
Status
Control
Exec
PICkit™ Serial Analyzer
USB
H
O
S
T
D
E
V
I
C
E
I
2
C™
B
A
A – event data
B – I
2
C™ read data