ZL50074GAC ZARLINK [Zarlink Semiconductor Inc], ZL50074GAC Datasheet - Page 36

• 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]

12.3
The ZL50074 addresses the issues of a simple programming model and automatic stream configuration by defining
a basic switching bit rate of 65.536 Mbps and by grouping the I/O streams. Each TDM I/O group contains 4 input
and 4 output streams. The 4 input streams in the same group have identical input characteristics, and similarly, the
4 output streams in the same group have identical output characteristics. However, input and output streams in the
same group can have different input and output operation characteristics.
The Group Control Registers are provided for setting the operating characteristics of the TDM input and output
streams. All of the Group Control Registers are mapped long-word aligned on 32 bit boundaries in the memory
space. Each of the 32 registers is used to control one group. The mapping of the Group Control Registers to the I/O
group numbers is illustrated in Table 20. The bit functions of each of the Group Control Registers are illustrated in
Table 21.
31 - 23
External Read/Write Address: 40200
Reset Value: 000C000C
Bit
22
31
15
0
0
Group Control Registers
30
14
0
0
Unused
Name
29
13
0
0
OSI
28
12
0
0
H
27
11
Reserved. In normal functional mode, these bits MUST be set to zero.
Output Stream Inversion
For normal operation, this bit is set low.
To invert the output stream, set this bit high.
0
0
TDM Group
Table 20 - Group Control Register Addressing
H
26
10
29
30
31
- 4027F
0
0
0
1
2
3
:
:
Table 21 - Group Control Register
25
ISI
0
9
H
ISPD
24
8
Zarlink Semiconductor Inc.
0
4
Group Control Register Address (Hex)
ZL50074
ISPD
23
7
0
3
36
ISPD
OSI
22
4020C-4020F
4027C-4027F
6
2
40208-4020B
40278-4027B
40200-40203
40204-40207
40274-40277
Description
OSBA
ISPD
21
:
:
5
1
1
OSBA
ISPD
20
4
0
0
19
1
3
1
18
1
2
1
OSSRC
ISSRC
17
1
1
1
Data Sheet
OSSRC
ISSRC
16
0
0
0