isp1760 NXP Semiconductors, isp1760 Datasheet - Page 43

• Manufacturer Part Number: isp1760
• Description: Hi-speed Universal Serial Bus Host Controller For Embedded Applications
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 41:
[1]
9397 750 13257
Product data sheet
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
The reserved bits should always be written with the reset value.
Buffer Status register: bit allocation
8.3.6 Buffer Status register (R/W: 0334h)
R/W
R/W
R/W
R/W
31
23
15
7
0
0
0
0
Table 40:
Table 41
Bit
31 to 8
7 to 4
3 to 2
1
0
R/W
R/W
R/W
R/W
30
22
14
6
0
0
0
0
shows the bit allocation of the Buffer Status register.
DMA Configuration register: bit description
Symbol
DMA_COUNTER
[23:0]
-
BURST_LEN[1:0]
ENABLE_DMA
DMA_READ_
WRITE_SEL
reserved
R/W
R/W
R/W
R/W
29
21
13
0
0
0
5
0
Rev. 01 — 8 November 2004
[1]
Description
DMA Counter: The number of bytes to be transferred (read or
write).
Remark: Different number of bursts will be generated for the
same transfer length programmed in 16-bit and 32-bit modes
because DMA_COUNTER is in number of bytes.
reserved
DMA Burst Length:
00 — Single DMA burst
01 — 4-cycle DMA burst
10 — 8-cycle DMA burst
11 — 16-cycle DMA burst.
Enable DMA:
0 — Terminate DMA
1 — Enable DMA.
DMA Read/Write Select: Indicates if the DMA operation is a
write or read (to or from the ISP1760).
0 — DMA write to the ISP1760 internal RAM is set
1 — DMA read from the ISP1760 internal RAM.
R/W
R/W
R/W
R/W
28
20
12
4
0
0
0
0
reserved
reserved
reserved
[1]
[1]
[1]
R/W
R/W
R/W
R/W
27
19
11
0
0
0
3
0
Embedded Hi-Speed USB host controller
ISO_BUF_
R/W
R/W
R/W
FILL
R/W
26
18
10
0
0
0
2
0
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
INT_BUF_
R/W
R/W
R/W
FILL
R/W
25
17
0
0
9
0
1
0
ISP1760
ATL_BUF_
FILL
R/W
R/W
R/W
R/W
43 of 105
24
16
0
0
8
0
0
0