參數(shù)資料
型號(hào)： ISP1181
廠商： NXP Semiconductors N.V.
英文描述： Full-speed Universal Serial Bus Interface Device(全速通用串行總線接口器件)
中文描述： 全速通用串行總線接口設(shè)備（全速通用串行總線接口器件）
文件頁(yè)數(shù)： 37/69頁(yè)
文件大?。?/td> 1655K
代理商： ISP1181
Philips Semiconductors
ISP1181
Full-speed USB interface
Objective specification
Rev. 01 — 13 March 2000
37 of 69
9397 750 06896
Philips Electronics N.V. 2000. All rights reserved.
12.3.2
Unlock Device
This command unlocks the ISP1181 from write-protection mode after a ‘resume’. In
‘suspend’ state all registers and FIFOs are write-protected to prevent data corruption
by external devices during a ‘resume’. Register access for reading is not blocked.
After waking up from ‘suspend’ state, the firmware must unlock the registers and
FIFOs via this command, by writing the unlock code (AA37H) into the Lock Register
(8-bit bus: lower byte first). The bit allocation of the Lock Register is given in
Table 40
.
Code (Hex): B0 —
unlock the device
Transaction —
write 2 bytes (unlock code)
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
token CRC error
data CRC error
time-out error
babble error
unexpected end-of-packet
sent or received NAK (Not AcKnowledge)
sent Stall; a token was received, but the endpoint was stalled
overflow; the received packet was larger than the available buffer space
sent empty packet (ISO only)
bit stuffing error
sync error
wrong (unexpected) toggle bit in DATA PID; data was ignored
Table 39: Transaction error codes
Error code
(Binary)
Description
Table 40: Lock Register: bit allocation
Bit
15
Symbol
Reset
1
Access
W
Bit
7
Symbol
Reset
0
Access
W
14
13
12
11
10
9
8
UNLOCKH[7:0] = AAH
0
W
4
UNLOCKL[7:0] = 37H
1
W
0
W
6
1
W
5
1
W
3
0
W
2
1
W
1
0
W
0
0
W
1
W
0
W
1
W
1
W
1
W
Table 41: Error Code Register: bit description
Bit
Symbol
15 to 0
UNLOCK[15:0]
Description
Sending data AA37H unlocks the internal registers and FIFOs
for writing, following a ‘resume’.
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISP1181A 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Full-speed Universal Serial Bus peripheral controller
ISP1181ABS 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Full-speed Universal Serial Bus peripheral controller
ISP1181ABS,518 功能描述:USB 接口集成電路 USB 1.1 ADV DEVICE RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類(lèi)型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
ISP1181ABS,551 功能描述:USB 接口集成電路 USB 1.1 ADVANCED DEVICE RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類(lèi)型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
ISP1181ABS,557 功能描述:USB 接口集成電路 DO NOT USE ORDER -S OR -T PART RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類(lèi)型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
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