W83877ATG Nuvoton Technology Corporation of America, W83877ATG Datasheet - Page 92

• Manufacturer Part Number: W83877ATG
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83877ATG

• Lead Free Status / RoHS Status: Supplier Unconfirmed

7.2.6
7.2.7
nWrite
PD<0:7>
Intr
nWait
PE
Select
nDStrb
nError
nInits
nAStrb
Data Port (R/W)
Status Buffer (Read)
Control Swapper (Read)
Control Latch (Write)
EPP Address Port
(R/W)
EPP Data Port 0 (R/W)
EPP Data Port 1
(R/W)
EPP Data Port 2 (R/W)
EPP Data Port 3 (R/W)
EPP NAME
Bit Map of Parallel Port and EPP Registers
EPP Pin Descriptions
REGISTER
TYPE
I/O
O
O
O
O
I
I
I
I
I
Denotes an address or data read or write operation.
Bi-directional EPP address and data bus.
Used by peripheral device to interrupt the host.
Inactive to acknowledge that data transfer is completed. Active to indicate
that the device is ready for the next transfer.
Paper end; same as SPP mode.
Printer selected status; same as SPP mode.
This signal is active low. It denotes a data read or write operation.
Error; same as SPP mode.
This signal is active low. When it is active, the EPP device is reset to its
initial operating mode.
This signal is active low. It denotes an address read or write operation.
BUSY
PD7
PD7
PD7
PD7
PD7
PD7
1
7
1
ACK
PD6
PD6
PD6
PD6
PD6
PD6
1
1
6
PD5
PD5
PD5
PD5
PD5
PD5
DIR
PE
5
1
- 85 -
IRQEN
SLCT
PD4
PD4
PD4
PD4
PD4
PD4
IRQ
EPP DESCRIPTION
4
W83877ATF/W83877ATG
ERROR
SLIN
SLIN
Publication Release Date:November 2006
PD3
PD3
PD3
PD3
PD3
PD3
3
PD2
INIT
INIT
PD2
PD2
PD2
PD2
PD2
1
2
AUTOFD
AUTOFD
PD1
PD1
PD1
PD1
PD1
PD1
1
1
Version 1.0
STROBE
STROBE
TMOUT
PD0
PD0
PD0
PD0
PD0
PD0
0