PM7344 S/UNI-MPH
DATA SHEET
PMC-950449
ISSUE 6
MULTI-PHY USER NETWORK INTERFACE
Registers 055H, 155H, 255H and 355H: PDVD Interrupt Enable/Status
Bit
Type
Function
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Unused
Unused
Unused
PDV
Z16DI
PDVI
X
X
X
0
0
0
0
0
R
R
R
R/W
R/W
Z16DE
PDVE
These registers are used to monitor pulse density violations when the T1 format
is enabled.
PDVE:
The PDVE bit enables an interrupt to be generated on the INTB pin when a
change in the pulse density is detected. When PDVE is set to logic 1, an
interrupt is generated whenever a pulse density violation occurs or when the
pulse density ceases to exist. When PDVE is set to logic 0, interrupt
generation by pulse density violations is disabled.
Z16DE:
The Z16DE bit enables an interrupt to be generated on the INTB pin when
16 consecutive zeros are detected. When Z16DE is set to logic 1, interrupt is
generation is enabled. When Z16DE is set to logic 0, interrupt generation is
disabled.
PDVI, Z16DI:
The PDVI and Z16DI bits identify the source of a generated interrupt. PDVI is
a logic 1 whenever a change in the pulse density violation state occurs. PDVI
is cleared to 0 when this register is read. Z16DI is a logic 1 whenever 16
consecutive zeros are detected. Z16DI is cleared to 0 when this register is
read.
PDV:
The PDV bit indicates the current state of the pulse density violation detector.
When PDV is a logic 1, a violation of the pulse density rule has been
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167
PMC [ PMC-SIERRA, INC ]
