ZL50074GAC ZARLINK [Zarlink Semiconductor Inc], ZL50074GAC Datasheet - Page 33

• Manufacturer Part Number: ZL50074GAC
• Description: 32 K x 32 K Channel TDM Switch with 128 Input and 128 Output Streams
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

12.1.2
The Connection Memory Least Significant Byte field is provided to give a convenient alternative way to modify the
output data for a stream in message mode. In this memory address range, all of the connection memory least
significant bytes (bits 7 - 0) are available for read/write in consecutive address locations. This feature is provided for
programming convenience. It can allow higher programming bandwidth on message mode streams. For example,
one longword access to this memory space can read or set the message bytes in four consecutive connection
memory locations. Access to this memory space is big-endian, with the most significant bytes on the data bus
accessing the lower address of the connection memory. For example, for 32-bit data bus, to access the Connection
Memory LSB associated with channels 3 - 0 on a particular stream, the data bus D31 - 24 carry data for channel 0,
D23 - 16 carry data for channel 1, D15 - 8 carry data for channel 2, and D7 - 0 carry data for channel 3. Addressing
into each of the streams is illustrated in Table 16.
Connection Memory LSB
Output
Group
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
Address
020C00
021C00
022C00
023C00
020000
020400
020800
021000
021400
021800
022000
022400
022800
023000
023400
023800
Table 16 - Connection Memory LSB Group Address Mapping
(Hex)
Start
020C00 - 020FFF
021C00 - 021FFF
022C00 - 022FFF
023C00 - 023FFF
020000 - 0203FF
020400 - 0207FF
020800 - 020BFF
021000 - 0213FF
021400 - 0217FF
021800 - 021BFF
022000 - 0223FF
022400 - 0227FF
022800 - 022BFF
023000 - 0233FF
023400 - 0237FF
023800 - 023BFF
Address Range
(Hex)
Zarlink Semiconductor Inc.
ZL50074
33
Output
Group
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Address
024C00
025C00
026C00
027C00
024000
024400
024800
025000
025400
025800
026000
026400
026800
027000
027400
027800
(Hex)
Start
024C00 - 024FFF
025C00 - 025FFF
026C00 - 026FFF
027C00 - 027FFF
024800 - 024BFF
025800 - 025BFF
026800 - 026BFF
027800 - 027BFF
024000 - 0243FF
024400 - 0247FF
025000 - 0253FF
025400 - 0257FF
026000 - 0263FF
026400 - 0267FF
027000 - 0273FF
027400 - 0277FF
Address Range
(Hex)
Data Sheet