IDT72V70190 Integrated Device Technology, IDT72V70190 Datasheet - Page 12

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

TABLE 10 — CONNECTION MEMORY BITS
NOTE:
1. If bit 13 (PC) of the corresponding connection memory location is 1 (device in processor mode), then these entire 8 bits (SAB0, bits 6-5, CAB4 - CAB0) are output on the
IDT72V70190 3.3V TIME SLOT INTERCHANGE
DIGITAL SWITCH 256 x 256
9,8,7
4-0
6,5
Bit
15
14
13
12
11
10
LPBK
output channel and stream associated with this location.
15
(1)
(1)
(1)
LPBK
(Per Channel Loopback)
V/C
(Variable/Constant
Throughput Delay)
PC
(Processor Channel)
CCO
(Control Channel Output)
OE
(Output Enable)
Unused
SAB2-0
(Source Stream Address Bits)
Unused
CAB4-0
(Source Channel Address Bits)
V/C
14
PC
Name
13
CCO
12
OE
11
When 1, the RX n channel m data comes from the TX n channel m. For proper per channel loopback
operations, set the delay offset register bits OFn[2:0] to zero for the streams which are in the loopback mode.
This bit is used to select between the variable (LOW) and constant delay (HIGH) mode on a
per-channel basis.
When 1, the contents of the connection memory are output on the corresponding output channel and stream.
Only the lower byte (bit 7 – bit 0) will be output to the TX output pins. When 0, the contents of the connection
memory are the data memory address of the switched input channel and stream.
This bit is output on the CCO pin one channel early. The CCO bit for stream 0 is output first.
This bit enables the TX output drivers on a per-channel basis. When 1, the output driver functions
normally. When 0, the output driver is in a high-impedance state.
Must be zero for normal operation.
The binary value is the number of the data stream for the source of the connection.
Must be zero for normal operation.
The binary value is the number of the channel for the source of the connection.
10
0
SAB2
9
SAB1
8
SAB0
7
12
6
0
Description
5
0
CAB4
4
CAB3
3
COMMERCIAL TEMPERATURE RANGE
CAB2
2
CAB1
1
CAB0
0