zl50073 Zarlink Semiconductor, zl50073 Datasheet - Page 43

• Manufacturer Part Number: zl50073
• Description: 32 K Channel Digital Switch With High Jitter Tolerance, Rate Conversion Per Group Of 4 Streams 8, 16, 32 Or 64 Mbps
• Manufacturer: Zarlink Semiconductor

14.4
The ZL50073 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 24. The bit functions of each of the Group Control Registers are illustrated in
Table 25.
BER Input Group
Group Control Registers
31
0
1
2
.
.
.
Table 23 - BER Counter Group and Stream Address Mapping
BER Input Stream
TDM Group
Table 24 - Group Control Register Addressing
0
1
2
STiC31
STiD31
STiA31
STiB31
STiA0
STiB0
STiC0
STiD0
STiA1
STiB1
STiC1
STiD1
STiA2
STiB2
STiC2
STiD2
.
.
.
Zarlink Semiconductor Inc.
Group Control Register Address (Hex)
ZL50073
43
Start Address (Hex)
40208 - 4020B
40200 - 40203
40204 - 40207
400FC
401FC
4007C
4017C
40000
40080
40100
40180
40004
40084
40104
40184
40008
40088
40108
40188
.
.
.
End Address (Hex)
4000B
4008B
4010B
4018B
400FF
401FF
40003
40083
40103
40183
40007
40087
40107
40187
4007F
4017F
.
.
.
Data Sheet