ZL30226/GA ZARLINK [Zarlink Semiconductor Inc], ZL30226/GA Datasheet - Page 63

• Manufacturer Part Number: ZL30226/GA
• Description: 4/8/16 Port IMA/TC PHY Device for xDSL
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

Note: The content of the counter for all cells in the Utopia Transmit block for the IMA Group 7 is not reset by the latch
command when the counters are operating in latch mode. The counter will contain a cumulative count of the ATM
cells that were received on the corresponding Utopia port address. This counter is defined by the value 0x0177 in
the Select Counter Register (0x0432).
6.2
The ZL30226/7/8 can generate interrupts from many sources. All interrupt sources can be enabled or disabled. Write
action is required to clear the source of interrupt. Interrupts are grouped on a per link basis, with six sub-categories
for each link and two special types for the IMA Group configuration. These special interrupts are only present in the
Link 0 IRQ Status register. Refer to Figure 15 for a representation of the interrupt register hierarchy.
Transfer
Interrupt Block
Frame
Pulse
Done
Handler Register
TX ICP Cell
0
7
7
0
RX FIFO Overflow
S
T
A
T
U
S
E
N
A
B
E
L
READY BIT/ICP CELL TIME *
4 UTOPIA
TC Link Overflow Status
Counters
1 UTOPIA
Counters
Counters
4 RX
4 TX
Overflow in ICP pre-proc
IMA GRP CNTRS *
Figure 15 - IRQ Register Hierarchy
Link 15
End of LODS
New RX ICP
End of LCD
End of LIF
Link 14
S
T
A
T
U
S
Zarlink Semiconductor Inc.
Link 13
ZL30226/7/8
1 set of registers
Group Counters
LODS
OVERFLOW
.......
UTOPIA IMA
LCD
IMA Group
LIF
Link 3
IV
Registers
E
N
A
B
E
L
16 x IRQ
Link 2
Link
11
63
0
S
T
A
T
U
S
Link 1
S
T
A
T
U
S
Link 0
E
N
A
B
E
L
7
OVERFLOW
0
8 registers
IMA
S
T
A
T
U
S
Link 15
Link 0
1 UTOPIA
RX FIFO Overflow
4 UTOPIA
Counters
Registers
1 x IRQ
Master
S
T
A
T
U
S
Note *: These 2 IRQ signals are
only present in IRQ Link Status
register (0x0435) for Link 0.
E
N
A
B
E
L
IRQ PIN
Data Sheet