DV164122 Microchip Technology, DV164122 Datasheet - Page 106

• 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

DS51647B-page 100
TABLE 11-18: I
An example of a data stream in the script buffer that would direct the COMM back to
communicate in I
Under test is as follows:
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 11-19) and returned to the host software via CBUF2.
0x81
0x84
0x02
0xA8
0x01
0x83
0x84
0x01
0xA9
0x89
0x01
0x82
0x9A
0x9B
0x95
0x96
0x97
0x98
0x99
2
C bus. TAG and data bytes - 0x84, 0x01, 0xA9 – will cause 1 byte (0xA9) to
2
C ‘Start’ bit on the I
2
C transaction looks like this on the bus:
2
1
1
1
1
1
1
1
2
CM ‘CMD’ TAG BYTES (CONTINUED)
C to the unit.
I
I
Number of bytes
I
I
I
I
Number of bytes
I
I
Number of bytes
I
2
2
2
2
2
2
2
2
2
CM_START
CM_WRITE_BYTES
C™ address for writing
C™ command code
CM_RESTART
CM_WRITE_BYTES
C™ address for reading
CM_READ_BYTES_NLB
CM_STOP
I
I
I
I
I
I
I
2
2
2
2
2
2
2
CM _AUX1_WAIT_1
CM _AUX2_RST
CM _AUX2_SET
CM _AUX2_OUT
CM _AUX2_IN
CM _AUX2_WAIT_0
CM _AUX2_WAIT_1
2
C bus. TAG 0x84 indicates 2 bytes will be transmitted
2
C ‘Stop’ bit is issued according to tag 0x82.
wait AUX1 == 1
AUX2: 0
AUX2: 1
AUX2 direction: OUTPUT
AUX2 direction: INPUT
wait AUX2 == 0
wait AUX2 == 1
0
0
0
0
0
0
0
TAG
TAG
TAG
TAG
TAG
TAG
TAG
2
C slave address (with
© 2007 Microchip Technology Inc.
2
C