S/UNI-IMA-4 Telecom Standard Product Data Sheet
Released
VSS The VSS pins should be connected to GND. VSSO
pins are ground pins for ports. VSSQ pins are “quiet” ground
pins for ports. VSSI pins are core ground pins. All grounds
should be connected together.
VSS
Ground
A12 AA2
AA3 AA7
AB12 AB15
AB21 AB8
B4 C11
(VSSI,
VSSO,
VSSQ)
C17 C19
C3 D3 D15
D19 D22
D5 D8
F1 F2 G2
G3 G19
G4 J9
J10 J11
J12 J13
J14 K3
K9 K10
K11 K12
K13 K14
L9 L10
L11 L12
L13 L14
L21 M4
M9 M10
M11 M12
M13 M14
M19 N9
N10 N11
N12 N13
N14 P9
P10 P11
P12 P13
P14 T2 U2
U3 V1 V3
V4 T3
V21 V22 W1
W21 Y1 Y11
Y14 Y17
VDD (3.3V)
Power
A18 A22
AB17 D11
D16 D4
E1 F20
L1 L19
R21 R4
V2 W16
W4 W8
Y18 Y20
Y5
VDD (3.3V) The I/O power pins (VDD) should be connected
to a well-decoupled +3.3 V DC supply. These pins include
the VDDO pins for the switching, as well as the VDDQ for
the quiet power pins.
Notes on Pin Description:
Sꢀ All S/UNI-IMA-4 I/O present minimum capacitive loading and operate at TTL logic levels and can
tolerate 5.0V levels.
Sꢀ Inputs RSTB, ALE, TCK, TMS, TDI and TRSTB, TSCLK, CTSCLK, RSCLK, RSDATA, and OE have
internal pull-up resistors.
Sꢀ All outputs and bi-directional signals have 6mA drive capability, except for the following, which have a
4mA drive capability: CBCSB, CBRASB, CBCASB, CBWEB, CBA[10:0], CBBS, CBDQM,
CBDQ[15:0], TDO.
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2020889, Issue 2
42
PMC [ PMC-SIERRA, INC ]
