DV164122 Microchip Technology, DV164122 Datasheet - Page 110

• 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 104
FIGURE 11-3:
11.7.1.2.1 Operation
Execute the following sequence for initialization:
1. Issue COLD START (Reset)
2. Write CONFIGURATION BLOCK (with COMM=I2CS, MODE=1, EVENT MARK-
3. Issue WARM START
The HOST must monitor I
MASTER request ‘read’ data, the PKSA will hold the I
HOST with SDATA TAG: I2CS_DATA_RQ. The HOST must supply data to the PKSA
to be returned to the I2CS MASTER using SCMND TAG: I2CS_SEND_BYTES. If more
data is supplied than is required for the transaction, the remaining data will be dis-
carded. If an insufficient number of bytes are supplied by the HOST, the PKSA will
return all data supplied then hold SCK line low and re-issue SCMND TAG:
I2CS_DATA_RQ to the HOST.
11.7.1.3
AUTO is the most sophisticated mode allowing the PKSA to operate ‘autonomously’
from a ‘slave profile’ loaded in PKSA RAM (CBUF3). The slave profile defines one or
more I
registers can be defined in two ways – (1) discrete, non-contiguous registers of various
lengths or (2) a block of contiguous addresses with flexible access to 1 or more bytes
within that block in a single transaction. Additionally, each register can be defined as
Read/Write, Read-only or Write-only.
The 2 bytes in the PKSA CONTROL BLOCK, ADDRESS and MASK, defines the set of
SLAVE addresses that the PKSA will ‘ACKNOWLEDGE’. All addresses excluded by
the ADDRESS and MASK will be automatically ‘NOT ACKNOWLEDGED’. For all
acknowledged address the pre-loaded SLAVE PROFILE dictates the
response/behavior.
For I
SLAVE PROFILE, WRITE data is discarded and a READ data is defaulted (0xFF). Sim-
ilarly, writing to a ‘READ-ONLY’ register or attempting to write beyond the addressable
H
O
S
T
ERS enabled)
2
C transactions involving SLAVE ADDRESSES or REGISTERS not defined in the
USB
2
C slave addresses and a unique set of device registers for each. The device
PKSA
MODE: AUTO
EXEC
2
C transactions via the EVENT MARKERS. Should the I
CONTROL
STATUS
CBUF1
CBUF2
CBUF3
A - event data
B - I
B
A
2
C read data
2
C SCK line low and alert the
COMM
I
2
CS
© 2007 Microchip Technology Inc.
I
2
C
D
E
V
C
E
I
2
C