參數(shù)資料
型號(hào)： ISP1362
廠商： NXP Semiconductors N.V.
英文描述： Single-chip Universal Serial Bus On-The-Go controller
中文描述： 單芯片通用串行總線和On - The - Go控制器
文件頁(yè)數(shù)： 108/150頁(yè)
文件大小： 647K
代理商： ISP1362
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Philips Semiconductors
ISP1362
Single-chip USB OTG controller
Product data
Rev. 03
—
06 January 2004
108 of 150
9397 750 12337
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
15.9.5
HcATLPTDSkipMap register (R/W: 1CH/9CH)
This is a 32-bit register, and the bit description is given in
Table 99
. Bit 0 of the
register represents the
fi
rst PTD stored in the ATL buffer, bit 1 represents the second
PTD stored in the buffer, and so on. When the bit is set by the HCD, the
corresponding PTD is skipped and is not processed by the HC. The HC processes
the skipped PTD only if the HCD has reset its corresponding skipped bit to logic 0.
Clearing the corresponding bit in the HcATLPTDSkipMap register when there is no
valid data in the block will cause unpredictable behavior of the HC.
Code (Hex): 1C
—
read
Code (Hex): 9C
—
write
15.9.6
HcATLLastPTD register (R/W: 1DH/9DH)
This is a 32-bit register.
Table 100
gives the bit description of the register. Bit 0 of the
register represents the
fi
rst PTD stored in the ATL buffer, bit 1 represents the second
PTD stored in the buffer, and so on. The bit that is set to logic 1 by the HCD is used
as an indication to the HC that its corresponding PTD is the last PTD stored in the
ATL buffer. When the processing of the last PTD is complete, the HC loops back to
process the
fi
rst PTD stored in the buffer.
Code (Hex): 1D
—
read
Code (Hex): 9D
—
write
15.9.7
HcATLCurrentActivePTD register (R: 1EH)
This register indicates which PTD stored in the ATL buffer is currently active and is
updated by the HC. The HCD can use it as a buffer pointer to decide which PTD
locations are currently free for
fi
lling in new PTDs to the buffer. This indication helps
to prevent the HCD from accidentally writing into the currently active PTD buffer
location.
Table 101
shows the bit allocation of the register.
Code (Hex): 1E
—
read only
Table 98:
Bit
31 to 0
HcATLPTDDoneMap register: bit description
Symbol
Access Value
PTDDone
Bits[31:0]
Description
0
—
The PTD stored in the ATL buffer was not
successfully processed by the HC.
R
0000H
1
—
The PTD stored in the ATL buffer was
successfully processed by the HC.
Table 99:
Bit
31 to 0 SkipBits
HcATLPTDSkipMap register: bit description
Symbol
Access Value
R/W
0000H
Description
0
—
The HC processes the PTD.
[31:0]
1
—
The HC skips processing the PTD.
Table 100: HcATLLastPTD register: bit description
Bit
Symbol
Access
31 to 0
LastPTD
Bits[31:0]
Value
0000H
Description
0
—
The PTD is not the last PTD stored in the
buffer.
R/W
1
—
The PTD is the last PTD stored in the buffer.
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