PM4314 QDSX
DATA SHEET
PMC-950857
ISSUE 5
QUAD T1/E1 LINE INTERFACE DEVICE
Pin Name
Type
Pin
No.
Function
VSSI[15]
VSSI[14]
VSSI[13]
VSSI[12]
VSSI[11]
VSSI[10]
VSSI[9]
VSSI[8]
VSSI[7]
VSSI[6]
VSSI[5]
VSSI[4]
VSSI[3]
VSSI[2]
VSSI[1]
TAVD[4]
TAVD[3]
TAVD[2]
TAVD[1]
Ground 116 Core Ground Pins (VSSI[15:1]).These pins must
be connected to a common ground together with
the VSSO[6:1], TAVS[4:1], and RAVS[4:1]pins.
115
102
83
82
81
80
65
52
51
38
23
22
21
1
Care must be taken to avoid coupling noise
between these pins.These pins also act as
thermal-dissipation grounds, and as such should
be thermally well-connected to a ground plane.
TX
58
Transmit Analog Power Pins (TAVD[4:1]).These
pins provide the +5 V supply to the transmit
analog line interfaces. The transmit analog line
interface remains in a low power consumption
state after reset until enabled. TAVD[4:1] must be
connected to a common well decoupled +5 V DC
power supply together with the VDDO[6:1],
VDDI[3:1], and RAVD[4:1] pins. Care must be
taken to avoid coupling noise between these
pins.
Analog 45
Power 109
122
TAVS[4]
TAVS[3]
TAVS[2]
TAVS[1]
TX
53
Transmit Analog Ground Pins (TAVS[4:1]).These
pins provide the ground supply to the transmit
analog line interface. TAVS[4:1] must be
connected to a common ground together with the
VSSO[6:1], VSSI[15:1], and RAVS[4:1] pins.
Care must be taken to avoid coupling noise
between these pins.
Analog 50
Ground 114
117
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
28
PMC [ PMC-SIERRA, INC ]
