ZL50070GAC ZARLINK [Zarlink Semiconductor Inc], ZL50070GAC Datasheet - Page 42

• Manufacturer Part Number: ZL50070GAC
• Description: 24 K Channel Digital Switch with High Jitter Tolerance, Rate Conversion per Group of 4 Streams (8, 16, 32 or 64 Mbps), and 96 Inputs and 96 Outputs
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

14.4
The ZL50070 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 24 registers is used to control one group. The mapping of the Group Control Registers to the I/O
group numbers is illustrated in Table 24. The bit functions of each of the Group Control Registers are illustrated in
Table 25.
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 Invert
For normal operation, this bit is set low.
To invert the output stream, set this bit high.
0
0
TDM Group
Table 24 - Group Control Register Addressing
H
26
10
21
22
23
- 4025F
0
0
0
1
2
3
:
:
Table 25 - Group Control Register
25
ISI
0
9
H
ISPD 4
24
8
Zarlink Semiconductor Inc.
0
Group Control Register Address (Hex)
ZL50070
ISPD 3
23
7
0
42
ISPD2
OSI
22
4020C-4020F
4025C-4025F
6
40208-4020B
40258-4025B
40200-40203
40204-40207
40254-40257
Description
OSBA 1
ISPD
21
:
:
5
1
OSBA 0 OSBR 1 OSBR 0
ISPD
20
4
0
ISBR 1
19
3
ISBR 0
18
2
OSSRC 1 OSSRC 0
ISSRC 1
17
1
Data Sheet
ISSRC 0
16
0