參數(shù)資料
型號: ISP1760
廠商: NXP Semiconductors N.V.
英文描述: Hi-Speed Universal Serial Bus host controller for embedded applications
中文描述: 高速嵌入式應(yīng)用的通用串行總線主控制器
文件頁數(shù): 77/105頁
文件大小: 449K
代理商: ISP1760
9397 750 13257
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 01 — 8 November 2004
77 of 105
Philips Semiconductors
ISP1760
Embedded Hi-Speed USB host controller
28 to 18
TT_MPS_Len
[10:0]
SW —
writes
Transaction Translator Maximum Packet Size Length
: This field
indicates the maximum number of bytes that can be sent per start split
depending on the number of total bytes needed. If the total bytes to be
sent for the entire ms is greater than 188 bytes, this field should be set
to 188 bytes for an OUT token and 192 byes for an IN token. Otherwise,
this field should be equal to the total bytes sent.
Number of Bytes to Transfer
: This field indicates the number of bytes
that can be transferred by this data structure. It is used to indicate the
depth of the DATA field. This field is restricted to 1023 bytes because in
SiTD the maximum allowable payload for a full-speed device is
1023 bytes. This field indirectly becomes the maximum packet size of
the downstream device.
-
0 —
This bit is deactivated when the entire PTD is executed—across
μ
SOF and SOF—or when a fatal error is encountered.
1 —
Software updates to one when there is payload to be sent or
received even across ms boundary. The current PTD is active.
17 to 3
NrBytesTo
Transfer
[14:0]
SW —
writes
2 to 1
0
reserved
V
-
SW —
sets
HW —
resets
Table 73:
Bit
Start and complete split for isochronous, SiTD: bit description
…continued
Symbol
Access
Description
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