IDT72V70190 Integrated Device Technology, IDT72V70190 Datasheet - Page 7

• Manufacturer Part Number: IDT72V70190
• Description: 3.3 Volt Time Slot Interchange Digital Switch 256 X 256
• Manufacturer: Integrated Device Technology

TABLE 1 — VARIABLE THROUGHPUT
DELAY VALUE
TABLE 4 — OUTPUT HIGH IMPEDANCE CONTROL
TABLE 3 — INTERNAL REGISTER AND ADDRESS MEMORY MAPPING
NOTE:
1. Bit A7 must be high for access to data and connection memory positions. Bit A7 must be low for access to registers.
IDT72V70190 3.3V TIME SLOT INTERCHANGE
DIGITAL SWITCH 256 x 256
Input Rate
2.048 Mb/s 32 – (n-m) time-slots m-n + 32 time-slots m-n time-slots
A7
0
0
0
0
0
1
1
1
1
1
OE bit in Connection
(1)
Memory
A6
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
m < n
A5
0
0
0
0
0
0
0
0
0
0
Delay for Variable Throughput Delay Mode
(m – output channel number)
(n – input channel number)
A4
0
0
0
0
0
0
0
1
1
.
m = n, n+1, n+2
A3
0
0
0
0
0
0
0
1
1
.
Don’t Care
ODE pin
0
0
1
1
A2
0
0
0
0
1
0
0
1
1
.
m > n+2
A1
0
0
1
1
0
0
0
1
1
.
A0
OSB bit in IMS
0
1
0
1
0
0
1
0
1
.
7
Don’t Care
Register
TABLE 2 — CONSTANT THROUGHPUT
DELAY VALUE
Input Rate
2.048 Mb/s
0
1
1
0
Interface Mode Selection Register, IMS
Frame Input Offset Register 0, FOR0
Frame Input Offset Register 1, FOR1
Frame Alignment Register, FAR
Delay for Constant Throughput Delay Mode
Control Register, CR
Location
Ch30
Ch31
(m – output channel number)
COMMERCIAL TEMPERATURE RANGE
Ch0
Ch1
(n – input channel number)
.
32 + (32 – n) + m time-slots
TX Output Driver
High-Impedance
High-Impedance
Per Channel
Status
Enable
Enable
Enable