isp1302 NXP Semiconductors, isp1302 Datasheet - Page 35

• Manufacturer Part Number: isp1302
• Description: Isp1302 Universal Serial Bus On-the-go Transceiver With Carkit Support
• Manufacturer: NXP Semiconductors

NXP Semiconductors
ISP1302_1
Product data sheet
9.3.4.1 Current address read
9.3.4 Read format
Table 50.
Figure 11
A read operation can be performed in two ways:
The transfer format description for a current address read is given in
illustration, see
Byte
ACK
:
Write data K + N
ACK
P
Fig 11. Writing data to the ISP1302 registers
•
•
S
S
Current address read: To read the register at the current address.
– Single register read
Random address read: To read N registers starting at a specified address. N defines
the number of registers to be read. If N = 1, only the start register is read.
– Single register read
– Multiple register read
write data K + 2
device select
device select
illustrates the write format for a one-byte write and a multiple-byte write.
Transfer format description for a multiple-byte write
Figure
1 master writes data to register K + N
wr
wr
Description
slave generates an acknowledgment
:
K + N
is possible that some registers may be overwritten, if the transfer is not
stopped before the rollover.
slave generates an acknowledgment
master generates a STOP condition
ACK
ACK
ACK
12.
Rev. 01 — 24 May 2007
register address K
register address K
write data K + 3
1 becomes > 255, the register address rolls over to 0. Therefore, it
one-byte write
multiple-byte write
ACK
ACK
ACK
.... maximum, rollover to 0
USB OTG transceiver with carkit support
write data K
write data K
1. When the incremented address
…continued
ACK
ACK
ACK
P
write data K + N - 1
write data K + 1
Table
© NXP B.V. 2007. All rights reserved.
ISP1302
51. For the
004aaa569
ACK
ACK
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P