MT90880/1/2/3
Data Sheet
12
Zarlink Semiconductor Inc.
3.0 External Interface Description
The following key applies to all tables:
O
I
D
U
Output
Input
internal 100 K
pull-down resistor present
internal 100 K
pull-up resistor present
3.1 WAN Access Interface
All WAN Access Interface signals are 5 V tolerant.
All WAN Access Interface outputs are high impedance while S_RST is low.
Signal
I/O
Package Balls
Description
WAN_STO[31:24]
O
T22 [31], U26 [30], R26 [29], P26 [28],
N25 [27], M24 [26], L25 [25], K24 [24]
WAN Interface serial output streams
Operate at 2.048 Mbs
All variants
WAN_STO[23:8]
O
J25 [23], G26 [22], G25 [21], G24 [20],
D26 [19], D22 [18], B24 [17], B23 [16],
B22 [15], A22 [14], E18 [13], E17 [12],
C18 [11], E16 [10], A17 [9], A16 [8]
WAN Interface serial output streams
Operate at 2.048 Mbs
MT90880 and MT90881 variants only.
WAN_STO[7:0]
O
B15 [7], A14 [6], B13 [5], B12 [4],
E11 [3], A10 [2], E10 [1], E9 [0]
WAN Interface serial output streams
Operate at 2.048 and 8.192 Mbs
MT90880 and MT90881 variants only.
WAN_STI[31:24]
I D
W26 [31], U25 [30], R25 [29], M23
[28],
L23 [27], L22 [26], K22 [25], K25 [24]
WAN Interface serial input streams
Operate at 2.048 Mbs
All variants.
WAN_STI[23:8]
I D
J22 [23], H25 [22], G23 [21], F25 [20],
E25 [19], C24 [18], D21 [17], E20 [16],
D20 [15], D19 [14], A21 [13], C19 [12],
A19 [11], A18 [10], B17 [9], E15 [8]
WAN Interface serial input streams
Operate at 2.048 Mbs
MT90880 and MT90881 variants only
WAN_STI[7:0]
I D
D14 [7], B14 [6], D12 [5], A12 [4],
A11 [3], C11 [2], A9 [1], C9 [0]
WAN Interface serial input streams
Operate at 2.048 and 8.192 Mbs
MT90880 and MT90881 variants only
WAN_FRMI[31:24]
I D
W25 [31], U24 [30], R24 [29], P25 [28],
N26 [27], M25 [26], L26 [25], K26 [24]
WAN Interface frame pulse inputs.
Programmable as active high or low.
All variants
WAN_FRMI[23:0]
I D
J26 [23], H26 [22], H24 [21], F26 [20],
F23 [19], C26 [18], A25 [17], C23 [16],
C22 [15], C21 [14], C20 [13], D18 [12],
B19 [11], D17 [10], D16 [9], B16 [8],
C15 [7], C14 [6], A13 [5], C13 [4],
D11 [3], D10 [2], C10 [1], D9 [0]
WAN Interface frame pulse inputs.
Programmable as active high or low.
MT90880 and MT90881 variants only.
WAN_CLKI[31:24]
I D
U22 [31], V26 [30], N23 [29], P24 [28],
M22 [27], N24 [26], K23 [25], L24 [24]
WAN Interface clock inputs.
Programmable as active high or low.
All variants
Table 4 - WAN Access Interface