XRT83L34ES Exar, XRT83L34ES Datasheet - Page 52

• Manufacturer Part Number: XRT83L34ES
• Description: Peripheral Drivers & Components - PCIs
• Manufacturer: Exar

Specifications of XRT83L34ES

• Product Category: Peripheral Drivers & Components - PCIs
• Rohs: yes

XRT83L34
REV. 1.0.1
THE MICROPROCESSOR INTERFACE
XRT83L34 is equipped with a microprocessor interface for easy device configuration. The parallel port of the
XRT83L34 is compatible with both the Intel-Asynchronous and the Motorola-Asynchronous address and data
buses. The XRT83L34 has an 7-bit address A[6:0] input and 8-bit bi-directional data bus D[7:0].
THE PINS OF THE MICROPROCESSOR INTERFACE
Table 16
the XRT83L34 device.
µPCLK
µPTS1
µPTS2
D[7:0]
A[6:0]
presents a list and a brief description of each of the pins that make up the Microprocessor Interface block, within
QUAD T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
Bi-Directional Data Bus pins:
These pins are used to drive and receive data over the bi-directional data bus, whenever the Micro-
processor performs READ or WRITE operations with the Microprocessor Interface of the XRT83L34
device.
Address Bus Input pins:
These input pins permit the Microprocessor to identify on-chip registers (within the XRT83L34 device)
whenever it performs READ and WRITE operations with the XRT83L34 device.
Microprocessor Type Select:
µPTS2 should be tied to GND. µPTS1 selects the microprocessor type.
Microprocessor Clock Input: This pin should be tied to GND for asychronous microprocessor inter-
face.
N
OTE
: This pin is internally pulled “Low” for asynchronous microprocessor operation when no clock is
T
present.
ABLE
16: M
ICROPROCESSOR INTERFACE SIGNAL DESCRIPTION
µPTS2
0
0
µPTS1
0
1
49
Intel Asynchronous Mode
Motorola Asynchronous Mode
µP Type
xr