參數(shù)資料
型號(hào)： 935268625518
廠商： NXP SEMICONDUCTORS
元件分類： 總線控制器
英文描述： UNIVERSAL SERIAL BUS CONTROLLER, PQFP64
封裝： 10 X 10 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-314-2, LQFP-64
文件頁(yè)數(shù)： 7/82頁(yè)
文件大?。?/td> 1965K
代理商： 935268625518
Philips Semiconductors
ISP1581
Hi-Speed USB interface device
Product data
Rev. 05 — 26 February 2003
15 of 78
9397 750 10766
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
8.
Modes of operation
The ISP1581 has two bus conguration modes, selected via pin BUS_CONF/DA0 at
power-up:
Split Bus mode (BUS_CONF = 0): 8-bit multiplexed address/data bus and
separate 8-bit/16-bit DMA bus
Generic Processor mode (BUS_CONF = 1); separate 8-bit address and 16-bit
data bus
Details of the bus congurations for each mode are given in Table 3. Typical interface
circuits for each mode are given in Section 15.
9.
Register descriptions
Table 3:
Bus conguration modes
BUS_CONF
PIO width
DMA width
Description
DMAWD = 0 DMAWD = 1
0
AD[7:0]
D[7:0]
D[15:0]
Split Bus mode: multiplexed address/data on pins AD[7:0];
separate 8/16-bit DMA bus on pins DATA[15:0]
1
A[7:0]
D[15:0]
D[7:0]
D[15:0]
Generic Processor mode: separate 8-bit address on pins
AD[7:0]; 16-bit data (PIO and DMA) on pins DATA[15:0]
Table 4:
Register summary
Name
Destination
Address
(Hex)
Description
Size
(bytes)
Initialization registers
Address
device
00
USB device address + enable
1
Mode
device
0C
power-down options, global interrupt
enable, SoftConnect
1
Interrupt Conguration
device
10
interrupt sources, trigger mode, output
polarity
1
Interrupt Enable
device
14
interrupt source enabling
4
DMA Conguration
DMA controller
38
see sub-section “DMA registers”
2
DMA Hardware
DMA controller
3C
see sub-section “DMA registers”
1
Data ow registers
Endpoint Index
endpoints
2C
endpoint selection, data ow direction
1
Control Function
endpoint
28
endpoint buffer management
1
Data Port
endpoint
20
data access to endpoint FIFO
2
Buffer Length
endpoint
1C
packet size counter
2
Endpoint MaxPacketSize
endpoint
04
maximum packet size
2
Endpoint Type
endpoint
08
selects endpoint type: control,
isochronous, bulk or interrupt
2
Short Packet
endpoint
24
short packet received on OUT endpoint
2
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