LSI Symbios SYM53C040 Technical Manual page 60

Table 3.5 Miscellaneous Signals (Cont.)
Pin Pin
Name Number
PSEN/ 10
WR/ 158
RD/ 160
ALE 11
SCL0 22
SCL1 149
SDA0 23
SDA1 150
MPIO0_ 32, 31, 30,
[7:0] 29, 28, 27,
26, 25
MPIO1_ 52, 51, 49,
[7:0] 48, 47, 46,
45, 44
MPIO2_ 73, 72, 70,
[7:0] 69, 67, 66,
64, 63
3-10
BGA Ball
Number
E2 Active low microcontroller
Program Space Enable
output.
B3 Active low microcontroller
write output.
A2 Active low microcontroller
read output.
E1 Address latch enable for
microcontroller bus.
G5 Two-Wire Serial Port 0 Clock
A5 Two-Wire Serial Port 1 Clock
H2 Two-Wire Serial Port 0 Data
B5 Two-Wire Serial Port 1 Data
K1, H6, Multipurpose I/O bank 0
J3, J2,
J1, H5,
H4, H3
K6, N5, Multipurpose I/O bank 1
M5, L5,
N4, K5,
M4, L4
N10, H8, Multipurpose I/O bank 2
M9, N9,
K8, L8,
M8, J7
Signal Descriptions
Description Pad Type
4 mA, 5 V tolerant
TTL bidirectional
4 mA, 5 V tolerant
TTL bidirectional
4 mA, 5 V tolerant
TTL bidirectional
4 mA, 5 V tolerant
TTL bidirectional
2 mA, 5 V tolerant
TTL Schmitt open
drain bidirectional
2 mA, 5 V tolerant
TTL Schmitt open
drain bidirectional
4 mA, 5 V tolerant
TTL bidirectional
4 mA, 5 V tolerant
TTL bidirectional
4 mA, 5 V tolerant
TTL bidirectional
Internal
Resistor
None
None
None
None
None
(external
pull-up
required)
None
(external
pull-up
required)
25 µA
pull-
down
25 µA
pull-
down
25 µA
pull-
down