isp1301 NXP Semiconductors, isp1301 Datasheet - Page 30

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

Philips Semiconductors
ISP1301_3
Product data sheet
12.4.2.1 Single read
12.4.2.2 Multiple read
12.4.2 Random address read
Figure 15
Table 39:
Figure 15
Table 40:
SDA line
S
Device select
ACK
Register address K
ACK
Device select
ACK
S
Read data K
No ACK
P
SDA line
S
Device select
ACK
Register address K
ACK
S
Device select
ACK
Read data K
ACK
Read data K + 1
ACK
:
Fig 14. Current address read
illustrates the byte sequence.
illustrates the byte sequence.
Transfer format description for single-byte read
Transfer format description for multiple-byte read
Description
master starts with a START condition
master transmits device address and writes command bit R/W = 0
slave generates an acknowledgment
master transmits (start) address of register K to be read from
slave generates an acknowledgment
master transmits device address and read command bit R/W = 1
slave generates an acknowledgment
master restarts with a START condition
slave transmits and master reads data from register K
master terminates the read operation by generating a No Acknowledge
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 (start) address of register K to be read from
slave generates an acknowledgment
master restarts with a START condition
master transmits device address and read command bit R/W = 1
slave generates an acknowledgment
slave transmits and master reads data from register K. After a byte is read,
the address is automatically incremented by 1.
master generates an acknowledgment
slave transmits and master reads data from register K + 1
master generates an acknowledgment
:
Rev. 03 — 21 February 2006
S
device select
current address read
rd
ACK
read data K
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
004aaa570
no ACK
P
USB OTG transceiver
ISP1301
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