XRT86L30_08 Datasheet, PDF (29/284 Pages) Exar Corporation – SINGLE T1/E1/J1 FRAMER/LIU COMBO

REV. 1.0.1
SINGLE T1/E1/J1 FRAMER/LIU COMBO
MICROPROCESSOR INTERFACE
(Framer Channel Number indicated by )
XRT86L30
SIGNAL NAME
PIN #
TYPE
DESCRIPTION
PTYPE0
PTYPE1
PTYPE2
127
I Microprocessor Type Input:
126
These input pins permit the user to specify which type of Microprocessor/Micro-
125
controller to be interfaced the Framer.
MICROPROCESSOR
TYPE
000
001
101
68HC11, 8051, 80C188
MOTOROLA 68K
IBM POWER PC 403
RDY
ADDR0
ADDR1
ADDR2
ADDR3
ADDR4
ADDR5
ADDR6
ADDR7
ADDR8
ADDR9
ADDR10
ADDR11
DBEN
ALE
74
O Ready/Data Transfer Acknowledge Output:
The exact behavior of this pin depends upon which Microprocessor the Framer
is configured to interface to:
Intel Type Microprocessors
This output pin toggles "Low" when the Framer is ready to respond to the cur-
rent PIO (Programmed I/O) or Burst Transaction.
Motorola Type Microprocessors
This output pin toggles "Low" when the Framer has completed the current bus
cycle.
75
I Microprocessor Interface Address Bus Input
76
ADDR[11:0] is a direct address bus for permitting access to internal registers for
77
read and write operations.
79
80
81
82
84
89
94
95
97
73
I Data Bus Enable Input pin.
This Active-Low pin is used to enable the bi-directional databus. To disable the
databus, this pin must be pulled “High”.
93
I Address Latch Enable Input_Address Strobe
18