ds26504 Maxim Integrated Products, Inc., ds26504 Datasheet - Page 19

• Manufacturer Part Number: ds26504
• Description: Ds26504 T1/e1/j1/64kcc Bits Element
• Manufacturer: Maxim Integrated Products, Inc.

A4/CPHA/
NAME
E1TS
TAIS
BTS/
HBE
A3/
A2/
A1/
A0/
L2
L1
L0
TYPE
I
I
I
I
I
I
Address Bus Bit A[4]/Serial Port Clock Phase Select/Line Build-Out
Select 2
A4: In nonmultiplexed bus operation (BIS[1:0] = 01), this pin serves as A[4]. In
multiplexed bus operation (BIS[1:0] = 00), these pins are not used and should
be tied low.
CPHA: In Serial Port Mode (BIS[1:0] = 10), this pin selects the serial port
clock phase. See the functional timing diagrams for the Serial Port Interface.
L2: In Hardware Mode (BIS[1:0] = 11), this pin selects the line build-out value.
Address Bus Bit A[3]/Line Build-Out Select 1
A3: In nonmultiplexed bus operation (BIS[1:0] = 01), this pin serves as A[3]. In
multiplexed bus operation (BIS[1:0] = 00), these pins are not used and should
be tied low.
L1: In Hardware Mode (BIS[1:0] = 11), this pin selects the line build-out value.
Address Bus Bit A[2]/Line Build-Out Select 0
A2: In nonmultiplexed bus operation (BIS[1:0] = 01), this pin serves as A[2]. In
multiplexed bus operation (BIS[1:0] = 00), these pins are not used and should
be tied low.
L0: In Hardware Mode (BIS[1:0] = 11), this pin selects the line build-out value.
Address Bus Bit A[1]/Transmit AIS
A1: In nonmultiplexed bus operation (BIS[1:0] = 01), this pin serves as A[1]. In
multiplexed bus operation (BIS[1:0] = 00), these pins are not used and should
be tied low.
TAIS: When set to 0 and in T1/E1 operating modes, the transmitter transmits an
AIS pattern. Set to 1 for normal operation.
TAIS (64KCC): When set = 0 and in any 64KCC mode, the device transmits an
all-ones signal without BPVs. When set = 1, normal 64KCC transmission is
enabled.
Address Bus Bit A[0]/E1 Termination Select
A0: In nonmultiplexed bus operation (BIS[1:0] = 01), this pin serves as A[0]. In
multiplexed bus operation (BIS[1:0] = 00), these pins are not used and should
be tied low.
E1TS: In Hardware Mode (BIS[1:0] = 11), this pin selects the E1 internal
termination value (0 = 75Ω, 1 = 120Ω).
Bus Type Select/Transmit and Receive B8ZS/HDB3 Enable
BTS: Strap high to select Motorola bus timing; strap low to select Intel bus
timing. This pin controls the function of the RD (DS), ALE (AS), and WR
(R/W) pins. If BTS = 1, then these pins assume the function listed in
parentheses ().
HBE: In Hardware Mode (BIS[1:0] = 11), this pin enables transmit and receive
B8ZS/HDB3 when in T1/E1 operating modes.
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FUNCTION
DS26504 T1/E1/J1/64KCC BITS Element