XRT94L31IB Exar Corporation, XRT94L31IB Datasheet - Page 3

• Manufacturer Part Number: XRT94L31IB
• Description: IC MAPPER DS3/E3/STS-1 504TBGA
• Manufacturer: Exar Corporation

Specifications of XRT94L31IB

• Applications: Network Switches
• Interface: Bus
• Voltage - Supply: 3.14 V ~ 3.47 V
• Package / Case: 504-LBGA
• Mounting Type: Surface Mount
• Product: Mapper
• Lead Free Status / RoHS Status: Contains lead / RoHS Compliant

REV. 1.0.1
PIN DESCRIPTION OF THE XRT94L31 (REV. B)
PIN #
AD25
AD23
AC21
AD27
AB25
AD26
AC25
AA24
AE24
AB20
AD22
AC20
AD21
AE23
AF24
W23
Y22
Y24
Y23
PTYPE_0PTYPE_1P
SIGNAL NAME
PADDR_10
PADDR_12
PADDR_13
PADDR_14
PADDR_11
PADDR_0
PADDR_1
PADDR_2
PADDR_3
PADDR_4
PADDR_5
PADDR_6
PADDR_7
PADDR_8
PADDR_9
TYPE_2
PCLK
I/O
I
I
I
TTL
TTL
TTL
TYPE
MICROPROCESSOR INTERFACE
Microprocessor Interface Clock Input:
This clock input signal is only used if the Microprocessor Interface has
been configured to operate in one of the Synchronous Modes (e.g.,
Power PC 403 Mode). If the Microprocessor Interface is configured to
operate in one of these modes, then it will use this clock signal to do the
following.·
•
N
Microprocessor Type Select input:
These three input pins are used to configure the Microprocessor Inter-
face block to readily support a wide variety of Microprocessor Interfaces.
The relationship between the settings of these input pins and the corre-
sponding Microprocessor Interface configuration is presented below.
PTYPE[2:0]
Address Bus Input pins (Microprocessor Interface):
These pins permit the Microprocessor to identify on-chip registers and
Buffer/Memory locations (within the XRT94L31) whenever it performs
READ and WRITE operations with the XRT94L31.
OTES
To sample the CS*, WR*/R/W*, A[14:0], D[7:0], RD*/DS* and DBEN
input pins, and· To update the state of D[7:0] and the RDY/DTACK
output signals.
000
001
010
011
100
101
111
1. The
2. This pin is inactive if the Microprocessor Interface has been
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC
:
frequencies ranging up to 33MHz.
configured to operate in either the Intel-Asynchronous or the
Motorola-Asynchronousl Modes. In this case, tie this pin to
GND.
3
Microprocessor Interface Mode
Microprocessor
Intel I960
Intel-Asynchronous Mode
Motorola - Asynchronous Mode
Intel X86
Motorola 860
IDT3051/52 (MIPS)
Power PC 403 Mode
DESCRIPTION
Interface
can
work
XRT94L31
with
mPCLK