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USB4604-1080HN-TR 参数 Datasheet PDF下载

USB4604-1080HN-TR图片预览
型号: USB4604-1080HN-TR
PDF下载: 下载PDF文件 查看货源
内容描述: USB 2.0 HSIC高速4端口集线器控制器 [USB 2.0 HSIC Hi-Speed 4-Port Hub Controller]
分类和应用: 外围集成电路数据传输控制器
文件页数/大小: 71 页 / 1039 K
品牌: SMSC [ SMSC CORPORATION ]
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USB 2.0 HSIC Hi-Speed 4-Port Hub Controller  
Datasheet  
write operation. Where color is visible in the figure, blue indicates signaling from the I2C master, and  
gray indicates signaling from the slave.  
S
7-Bit Slave Address  
0
A
xxxxxxxx  
A
nnnnnnnn  
A
...  
nnnnnnnn  
A
P
Register  
Address  
(bits 7-0)  
Data value for  
XXXXXX  
Data value for  
XXXXXX + y  
Figure 7.7 I2C Sequential Access Write Format  
In this operation, following the 7-bit slave address, the 8-bit register address is written indicating the  
start address for sequential write operation. Every subsequent access is a data write to a data register,  
where the register address increments after each access and an ACK from the slave occurs.  
Sequential write access is terminated by a Stop condition.  
7.2.1.2  
Sequential Access Reads  
The I2C interface supports direct reading of the device registers. In order to read one or more register  
addresses, the starting address must be set by using a write sequence followed by a read. The read  
register interface supports auto-increment mode. The master must send a NACK instead of an ACK  
when the last byte has been transferred.  
In this operation, following the 7-bit slave address, the 8-bit register address is written indicating the  
start address for the subsequent sequential read operation. In the read sequence, every data access  
is a data read from a data register where the register address increments after each access. The write  
sequence can end with optional Stop (P). If so, the read sequence must begin with a Start (S).  
Otherwise, the read sequence must start with a Repeated Start (Sr).  
Figure 7.8 shows the format of the read operation. Where color is visible in the figure, blue and gold  
indicate signaling from the I2C master, and gray indicates signaling from the slave.  
Optional. If present, Next  
access must have Start(S),  
otherwise Repeat Start (Sr)  
S
7-Bit Slave Address  
0
A
xxxxxxxx  
A
P
Register  
Address  
(bits 7-0)  
If previous write setting up  
Register address ended with a  
Stop (P), otherwise it will be  
Repeated Start (Sr)  
S
7-Bit Slave Address  
1
ACK n n n n n n n n ACK n n n n n n n n ACK  
...  
n n n n n n n n NACK  
P
Register value  
for xxxxxxxx  
Register value  
for xxxxxxxx + 1  
Register value  
for xxxxxxxx + y  
Figure 7.8 I2C Sequential Access Read Format  
SMSC USB4604  
39  
Revision 1.0 (06-17-13)  
DATASHEET