XRT73R06 Datasheet, PDF (14/68 Pages) Exar Corporation – SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT

XRT73R06
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SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
MICROPROCESSOR INTERFACE
LEAD # SIGNAL NAME TYPE
DESCRIPTION
T3
RDY
O Ready Acknowledge:
NOTE: This pin must be connected to VDD via 3 kΩ ± 1% resistor.
U3
INT
O INTERRUPT Output:
A transition to “Low” indicates that an interrupt has been generated. The inter-
rupt function can be disabled by clearing the interrupt enable bit in the Channel
Control Register.
NOTES:
1. This pin will remain asserted “Low” until the interrupt is serviced.
2. This pin must be conneced to VDD via 3 kΩ ± 1% resistor.
B4
ADDR[0]
I ADDRESS BUS:
A3
ADDR[1]
8 bit address bus for the microprocessor interface
B3
ADDR[2]
C4
ADDR[3]
C3
ADDR[4]
C2
ADDR[5]
D3
ADDR[6]
D4
ADDR[7]
N4
D[0]
I/O DATA BUS:
P3
D[1]
8 bit Data Bus for the microprocessor interface
P4
D[2]
P5
D[3]
R5
D[4]
R4
D[5]
R3
D[6]
R2
D[7]
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