DV164122 Microchip Technology, DV164122 Datasheet - Page 92

• 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

PICkit™ Serial Analyzer User’s Guide
DS51647A-page 86
The script (above) is interpreted as follows. TAG 0x81 instructs the COMM module to
generate an I
following the start – 0xA8 and 0x01. The first byte is the I
write/read bit Reset) and a data/command byte of 0x01. The COMM module does not
place any significance on the value of the data bytes but merely transmits them ‘blindly’
– as instructed. The next TAG 0x83 instructs the COMM module to issue a Restart bit
on the I
be transmitted. Here again, the COMM module does not interpret the data – the I
slave will interpret 0xA9 as an address with write/read bit set. TAG 0x89 followed by
data byte 0x01 instructs the COMM module to attempt to read 1 byte from the slave
then issue a NACK on the bus. Finally, an I
The resulting I
[START][A8][01][RESTART][A9][data byte received][STOP]
As the script is executed, a data stream will be developed using TAGs/CDATA
(described in Table 9-19) and returned to the host software via CBUF2.
TABLE 9-19:
CDATA
TAG/
0x8A
0x80
0x81
0x82
0x83
0x84
0x85
0x86
0x87
0x88
0x89
2
C bus. TAG and data bytes - 0x84, 0x01, 0xA9 – will cause 1 byte (0xA9) to
LEN
1
1
1
1
1
1
1
2
2
2
2
2
C ‘Start’ bit on the I
2
C transaction looks like this on the bus:
I
2
I
I
I
I
I
I
I
I
I
I
I
2
2
2
2
2
2
2
2
2
2
2
CM ‘DATA’ TAG BYTES
CM_EVENT_START_TX
CM_EVENT_STOP_TX
CM_EVENT_RESTART_TX
CM_EVENT_ACK_TX
CM_EVENT_NACK_TX
CM_EVENT_ACK_RX
CM_EVENT_NACK_RX
CM_EVENT_BYTE_TX
CM_EVENT_BYTE_RX
CM_EVENT_XACT_ERR
CM_EVENT_STATUS_ERR
Name
2
C bus. TAG 0x84 indicates 2 bytes will be transmitted
2
C ‘Stop’ bit is issued according to tag 0x82.
Start bit event
Stop bit event
Restart bit event
ACK bit event
NACK bit event
ACK bit event
NACK bit event
BYTE transmit
BYTE transmit
transaction error
status error
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
CDATA-TAG
CDATA-TAG
CDATA-TAG
CDATA-TAG
CDATA-TAG
CDATA-TAG
CDATA-TAG
CDATA-TAG
data
CDATA-TAG
data
CDATA-TAG
error byte
CDATA-TAG
error byte
2
C slave address (with
© 2007 Microchip Technology Inc.
Description
2
C