SC16IS762 Philips Semiconductors, SC16IS762 Datasheet - Page 38

• Manufacturer Part Number: SC16IS762
• Description: (SC16IS752 / SC16IS762) Dual UART
• Manufacturer: Philips Semiconductors

NXP Semiconductors
SC16IS752_SC16IS762_6
Product data sheet
Fig 17. I
master write:
master read:
combined
formats:
2
C-bus data formats
START condition
START condition
START condition
S
S
S
SLAVE ADDRESS
SLAVE ADDRESS
SLAVE ADDRESS
In a single master system, the ‘Repeated START’ mechanism may be more efficient than
terminating each transfer with a STOP and starting again. In a multimaster environment,
the determination of which format is more efficient could be more complicated, as when a
master is using repeated STARTs occupies the bus for a long time, and thus preventing
other devices from initiating transfers.
read or
write
write
read
R/W
W
R
acknowledge
acknowledge
acknowledge
A
A
A
(n bytes + acknowledge)
Rev. 06 — 19 December 2006
data transferred
DATA
DATA
DATA
Dual UART with I
acknowledge
(n bytes + acknowledge)
(n bytes + acknowledge)
data transferred
data transferred
A
acknowledge
A
acknowledge
A
Sr
repeated
START condition
2
SLAVE ADDRESS
SC16IS752/SC16IS762
C-bus/SPI interface, 64-byte FIFOs, IrDA SIR
DATA
DATA
may change at this point
acknowledge
acknowledge
STOP condition
STOP condition
direction of transfer
not
NA
read or
A
write
R/W
P
P
acknowledge
A
(n bytes + acknowledge)
data transferred
DATA
© NXP B.V. 2006. All rights reserved.
acknowledge
STOP condition
002aab458
A
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P