ACLAS PP7X - USB Interface

17
Pin No.
Source
Compatibility
Mode
Nibble Mode
Byte Mode
9
Host/Printer
Data 7
-
Data 7
10
Printer
nAck
PtrClk
PtrClk
11
Printer
Busy
PtrBusy/Data3,7
PtrBusy
12
Printer
PError
AckDataReq/Data2.6
AckDataReq
13
Printer
Select
Xflag/Data1,5
Xflag
14
Host
nAutoFd
HostBusy
HostBusy
15
Printer
nFault
nDataAvail/Data0,4
nDataAvail
16
Host
nInit
nInit
nInit
17
Host
nSelectIn
1284-Active
1284-Active
18~25
GND
GND
GND
5.3 USB Interface
Pin No.
Signal Name
Function
Shell
Shield
Frame Ground
1
VBUS
Host Power
2
D
Data Line（D-）
3
D
Data Line（D+）
4
GND
Signal Ground