HFC-U Cologne Chip AG, HFC-U Datasheet - Page 11

• Manufacturer Part Number: HFC-U
• Description: Isdn HDLC Basic Rate Controller
• Manufacturer: Cologne Chip AG

2.6
2.7
2.8
March 1997
Pin No.
35, 36,
100
94
95
96
97
98
99
34
37
44
43
48
46
1)
2)
Interrupt outputs
Reset
Miscellaneous pins
open drain, external pull up resistor required
open source, external pull down resistor required
IRQ_A
/IRQ_P
IRQ_B
IRQ_P
IRQ_C
/WD_RES
IRQ_D
WD_RES
IRQ_E
IRQ_F
/RESOUT
RESET
NC
IN0
IN1
OUT0
OUT1
Pin Name
Tristate
Output
Input
OT
OT
OT
OT
OT
OT
OT
OT
OT
OT
O
O
O
I
I
I
1)
2)
1)
2)
1
2,3,4
1
2,3,4
1
2,3,4
1
2,3,4
1
1
all
all
all
all
all
all
Mode Function
PC bus interrupt request A
processor interrupt request low active
PC bus interrupt request B
processor interrupt request high active
PC bus interrupt request C
Watchdog expired, external reset low active
PC bus interrupt request D
Watchdog expired, external reset high active
PC bus interrupt request E
PC bus interrupt request F
Reset output for external device (low active)
/RESOUT becomes active when RESET is active
or soft reset is active
Reset for HFC-U (high active)
No connection (leave pins open)
input pin 0, e. g. for power U-line detect
input pin 1, e. g. for power U-line detect
output pin 0, e. g. for external LEDs
output pin 1, e. g. for external LED
HFC-U
11 of 43