isp1301 NXP Semiconductors, isp1301 Datasheet - Page 28

• Manufacturer Part Number: isp1301
• Description: Universal Serial Bus On-the-go Transceiver
• Manufacturer: NXP Semiconductors

Philips Semiconductors
ISP1301_3
Product data sheet
12.3.2 Multiple-byte write
Table 36:
Figure 13
Table 37:
Byte
Write data K
ACK
P
Byte
S
Device select
ACK
Register address K
ACK
Write data K
ACK
Write data K + 1
ACK
:
Write data K + N
ACK
P
illustrates the byte sequence.
Transfer format description for one-byte write
Transfer format description for multiple-byte write
1 master writes data to register K + N
Description
master writes data to register K
slave generates an acknowledgment
master generates a STOP condition
Description
master starts with a START condition
master transmits device address and write command bit R/W = 0
slave generates an acknowledgment
master transmits address of register K. This is the start address for writing
multiple data bytes to consecutive registers. After a byte is written, the
register address is automatically incremented by 1.
Remark: If the master writes to a non existent register, the slave must send
a 'not ACK' and also must not increment the index address.
slave generates an acknowledgment
master writes data to register K
slave generates an acknowledgment
master writes data to register K + 1
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
Rev. 03 — 21 February 2006
1 becomes > 255, the register address rolls over to 0. Therefore, it
…continued
1. When the incremented address
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
USB OTG transceiver
ISP1301
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