mt90520 Zarlink Semiconductor, mt90520 Datasheet - Page 118

• Manufacturer Part Number: mt90520
• Description: 8-port Primary Rate Circuit Emulation Aal1 Sar
• Manufacturer: Zarlink Semiconductor

6.2
Note: Unused bits (labeled as “Reserved”) are reserved for future use and although most of them are read-only (R/
O) bits, they should be written with ‘0’ to ensure software compatibility with future versions of the MT90520.
6.2.1
Address: 0002 (Hex)
Label: MSR
Reset Value: 0000 (Hex)
RX_TIMEOUT_SRV
Note: An interrupt will be generated on the IRQ pin if any of the above Service Request bits is asserted and the corresponding Interrupt
Enable bit is set in the Main Interrupt Enable Register at 000Ah.
Address: 0004 (Hex)
Label: LAWI
Reset Value: 0000 (Hex)
SDT_RXSAR_SRV
UDT_RXSAR_SRV
Address: 0000 (Hex)
Label: CWRR
Reset Value: 0001 (Hex)
DATA_RXSAR_
TX_SAR_SRV
UTOPIA_SRV
XMEMA_SRV
TDM_SRV
CPU_SRV
Reserved
Reserved
Reserved
RESET
Register Description
Label
Label
Label
LAW
SRV
Microprocessor Interface Module
Position
Position
Position
15:1
Bit
15:1
15:9
Bit
0
Bit
0
0
1
2
3
4
5
6
7
8
Table 28 - Low Address Word Indirection Register
Type
R/W
R/O
Type
Type
R/W
R/O
R/O
R/O
R/O
R/O
R/O
R/O
R/O
R/O
R/O
R/O
Table 26 - Chip Wide Reset Register
Table 27 - Main Status Register
When set to 1, the chip is put into reset mode.
Always reads “0000_0000_0000_000”.
TX_SAR Service Request.
SDT RX_SAR Service Request.
UDT RX_SAR Service Request.
External Memory Arbiter Service Request.
Data RX_SAR Service Request.
Always reads ‘0’.
Low Address Word.
These bits represent bits<15:1> of the indirection address (in bytes). This register must
be written before the HAIC register at 0006h.
TDM Service Request.
UTOPIA Service Request.
Reassembly-Side Timeout Service Request.
CPU Service Request
Always reads “0000_000”.
Zarlink Semiconductor Inc.
MT90520
118
Description
Description
Description
Data Sheet