at7601fg AME, Inc., at7601fg Datasheet - Page 2

• Manufacturer Part Number: at7601fg
• Description: Printer Port Controller
• Manufacturer: AME, Inc.

4. Pin Description
2
AT7601F
I - TTL level input
O12 - Out buffer with 12mA drive/sink current
OD12
ICLK - Clock Input
OCLK - Clock Output
Pin No.
25, 35
4 - 11
42-44
13
14
15
16
17
18
40
41
45
46
48
2
3
1
- Open-drain with 12mA sink current
AME, Inc.
XTAL1/CLKIN
Pin name
CS2# /A10
IOCHRDY
DB [0: 7]
PS/PDIR
DACK#
RESET
A [0: 2]
XTAL2
CS1#
IOW#
DRQ
PINT
IOR#
AEN
NC
TC
Table 1. Host Interface
I/O Type
OD12/O12
OCLK
OD12
I/O12
ICLK
O12
O12
I
I
I
I
I
I
I
I
I
I
DMA Address Enable: active high, DMA controller has control of the
address bus.
I/O channel Ready: active High
Data Bus: bi-direction data port
DMA Acknowledge: Active low
DMA Request: Active high
Terminal count:
Crystal oscillator input,
Crystal oscillator output,
System Reset: active high
Power on strapping
Printer Port Direction Indicator
Print Interrupt
Address select line 0 - 2
A10: Address select line 10
Chip Select 2: active low, enables the parallel port / CPU data
transfer operation
Chip Select 1: active low, enables the parallel port / CPU data
transfer operation
I/O write: active low
I/O read: active low
Function
Printer Port Cotroller
Rev. B.02