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DS33R11 Ethernet Mapper with Integrated T1/E1/J1 Transceiver
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NAME PIN
TYPE
FUNCTION
RD
/
DS
B11 I
Read Data Strobe (Intel Mode):
The DS33R11 drives the data bus
(D0-D7) with the contents of the addressed register while
RD
and
CS
are both low.
Data Strobe (Motorola Mode):
Used to latch data through the
microprocessor interface.
DS
must be low during read and write
operations.
CS
A11 I
Chip Select for Protocol Conversion Device:
This pin must be
taken low for read/write operations. When
CS
is high, the
RD
/
DS
and
WR
signals are ignored.
CST
D7 I
Chip Select for the T1/E1/J1 Transceiver:
Must be low to read or
write the T1/E1/J1 transceiver.
INT
A10 OZ
Interrupt Output:
Outputs a logic zero when an unmasked
interrupt event is detected.
INT
is deasserted when all interrupts
have been acknowledged and serviced. Active low. Inactive state is
programmable in register
GL.CR1
. is deasserted when all
interrupts have been acknowledged and serviced. Active low.
Inactive state is programmable in register
GL.CR1
.