xrt75r12 Exar Corporation, xrt75r12 Datasheet - Page 50

• Manufacturer Part Number: xrt75r12
• Description: Twelve Channel E3/ds3/sts-1 Line Interface Unit With Jitter
• Manufacturer: Exar Corporation

XRT75R12
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
F
5. After the µP toggles the Write signal "Low", the LIU will toggle the RDY output pin "Low". The LIU does this
6. The CS input pin must be pulled "High" before a new command can be issued.
IGURE
S
YMBOL
to inform the µP that the data has been written into the internal register location, and that it is ready for the
next command.
NA
NA
t
t
t
t
t
0
1
2
3
4
Addr[7:0]
35. A
RDY
D[7:0]
WR
RD
CS
Valid Address to CS Falling Edge
CS Falling Edge to RD Assert
RD Assert to RDY Assert
RD Pulse Width (t
CS Falling Edge to WR Assert
WR Assert to RDY Assert
WR Pulse Width (t
SYNCHRONOUS
t
0
t
1
µP I
2
4
)
T
)
ABLE
P
Valid Address
READ OPERATION
ARAMETER
NTERFACE
t
2
15: A
SYNCHRONOUS
Valid Data for Readback
S
IGNALS
D
47
URING
T
IMING
P
ROGRAMMED
t
0
S
PECIFICATIONS
M
70
70
t
3
0
0
0
-
-
IN
I/O R
Data Available to Write Into the LIU
WRITE OPERATION
t
4
EAD AND
Valid Address
M
65
65
AX
-
-
-
-
-
W
RITE
O
PERATIONS
U
REV. 1.0.4
NITS
ns
ns
ns
ns
ns
ns
ns