參數(shù)資料
型號: ISP1301BS
廠商: NXP SEMICONDUCTORS
元件分類: 通用總線功能
英文描述: Universal Serial Bus On-The-Go transceiver
中文描述: LINE TRANSCEIVER, PQCC24
封裝: 4 X 4 MM, 0.85 MM HEIGHT, LEAD FREE AND HALOGEN FREE, PLASTIC, MO-220, SOT-616-1, HVQFN-24
文件頁數(shù): 28/46頁
文件大?。?/td> 245K
代理商: ISP1301BS
Philips Semiconductors
ISP1301
USB OTG transceiver
Product data
Rev. 01 — 14 April 2004
28 of 46
9397 750 11355
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
13.4 Read format
A read operation can be performed in two ways:
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.
13.4.1
Current address read
Figure 13
illustrates the byte sequence.
Fig 12. Writing data to the ISP1301 registers.
004aaa213
S
DEVICE SELECT
device select
register address K
write data K
S
DEVICE SELECT
device select
register address K
write data K
Dwrite data K + 2
write data K + 3
write data K + 1
write data K + N - 1
P
P
ACK
ACK
ACK
ACK
ACK
ACK
ACK
ACK
ACK
ACK
ACK
One-byte write
Multiple-byte write
.... maximum, rollover to 0
WR
WR
Table 38:
Byte
S
Device select
ACK
Read data K
Transfer format description for current address read
Description
master starts 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. If the start
address is not specified, the read operation starts from where the index
register is pointing to because of a previous read or write operation.
master terminates the read operation by generating a No Acknowledge
master generates a stop condition
No ACK
P
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