DV164122 Microchip Technology, DV164122 Datasheet - Page 111

• Manufacturer Part Number: DV164122
• Description: ANALYZER SRL PICKIT W/DEMO BOARD
• Manufacturer: Microchip Technology
• Series: PICkit™r
• Type: MCUr

Specifications of DV164122

• Contents: PICkit™ Serial Analyzer, 28-pin Demo Board, USB Cable, and Software with Documentation CD
• Processor To Be Evaluated: PIC16F886
• Interface Type: USB
• Silicon Manufacturer: Microchip
• Kit Application Type: Interface
• Application Sub Type: USB
• Silicon Family Name: PIC16F
• Kit Contents: PICkit Serial Analyzer, Demo Board, USB Cable, Software
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: PIC16F886
• For Use With: PKSERIAL-SPI1 - BOARD DEMO PICKIT SERIAL SPIPKSERIAL-I2C1 - BOARD DEMO PICKIT SERIAL I2C
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: Q3260228

© 2007 Microchip Technology Inc.
limits of the register will cause the write data to be discarded. Reading from a
‘WRITE-ONLY’ register or attempting to read beyond the addressable limits of the reg-
ister will result in default data (0xFF).
FIGURE 11-4:
11.7.1.3.1 Operation:
The HOST configures the AUTO mode as follows:
1. Issue COLD START (Reset)
2. Write CONFIGURATION BLOCK (comm=I2CS, mode=2, appropriate EVENT
3. Write SLAVE PROFILE to CBUF3
4. Issue WARM START
The AUTO mode allows the PKSA to operate autonomously (i.e. without HOST inter-
vention). Practically speaking, the HOST GUI will most likely want to reflect activity with
the SLAVE registers as it occurs. A couple options can be employed.
Option 1 would call for the HOST to enable I
each I
decode/interpret the transactions on a byte-by-byte basis.
Option 2 utilizes the ‘register access’ EVENT MARKERS (I2CS_EVENT_REG_READ
& I2CS_EVENT_REG_WRITE) fired to the HOST when a register within the SLAVE
PROFILE is accessed. The fact that a slave register was read is an ‘event’ but does not
represent a change in the data loaded in the SLAVE PROFILE. In the event that a reg-
ister within the SLAVE PROFILE was written, it may be important for the HOST moni-
toring the SLAVE PROFILE to fetch the ‘new’ data from that register for
processing/display. Data is retrieved from a register using SCMND TAG:
I2CS_REGDATA_READ. The register contents are returned with SDATA TAG:
I2CS_REGDATA.
The register contents can be written or read by the HOST. To insure data integrity of
multi-byte registers, the contents are accessed only ‘between’ I
may cause a slight delay in executing the request or in servicing the next/pending I2C
transactions.
O
H
S
T
MARKERS enabled)
USB
2
C transaction in which the PKSA participated. This requires that the HOST
PKSA
EXEC
CONTROL
(PROFILE)
STATUS
CBUF1
CBUF2
CBUF3
2
C transaction EVENT MARKERS detailing
A - event data
B - I
B
A
2
C read data
COMM
I
2
CS
2
C transactions. This
I
2
DS51647B-page 105
C
D
E
V
C
E
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