
DS31256 256-Channel, High-Throughput HDLC Controller
14 of 183
PIN
NAME
TYPE
FUNCTION
T20
R18
P17
R19
R20
P18
P19
P20
N18
N19
N20
M17
L18
L19
M18
K20
M19
H18
K18
H19
LD4
LD5
LD6
LD7
LD8
LD9
LD10
LD11
LD12
LD13
LD14
LD15
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
O
I
I/O
I
I/O
I
I/O
Local Bus Data Bit 4
Local Bus Data Bit 5
Local Bus Data Bit 6
Local Bus Data Bit 7
Local Bus Data Bit 8
Local Bus Data Bit 9
Local Bus Data Bit 10
Local Bus Data Bit 11
Local Bus Data Bit 12
Local Bus Data Bit 13
Local Bus Data Bit 14
Local Bus Data Bit 15, MSB
Local Bus Hold Acknowledge (Local Bus Grant)
Local Bus Hold (Local Bus Request)
Local Bus Intel/Motorola Bus Select
Local Bus Interrupt
Local Bus Mode Select
Local Bus Read Enable (Local Bus Data Strobe)
Local Bus PCI Bridge Ready
Local Bus Write Enable (Local Bus Read/Write Select)
LHLDA (
LBG
)
LHOLD (
LBR
)
LIM
LINT
LMS
LRD
(
LDS
)
LRD
Y
LWR
(LR/
W
)
A2, A8, A11, A19,
B2, B18, J18, J19,
K1–K3, L1–L3,
M20, U14, W2, W9,
Y1, Y19
V17
U16
Y18
W17
V16
Y17
W16
V15
W15
V14
Y15
W14
Y14
V13
W13
Y13
V9
U9
Y8
W8
V8
Y7
W7
V7
U7
V6
Y5
N.C.
—
No Connect. Do not connect any signal to this pin.
PAD0
PAD1
PAD2
PAD3
PAD4
PAD5
PAD6
PAD7
PAD8
PAD9
PAD10
PAD11
PAD12
PAD13
PAD14
PAD15
PAD16
PAD17
PAD18
PAD19
PAD20
PAD21
PAD22
PAD23
PAD24
PAD25
PAD26
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
PCI Multiplexed Address and Data Bit 0
PCI Multiplexed Address and Data Bit 1
PCI Multiplexed Address and Data Bit 2
PCI Multiplexed Address and Data Bit 3
PCI Multiplexed Address and Data Bit 4
PCI Multiplexed Address and Data Bit 5
PCI Multiplexed Address and Data Bit 6
PCI Multiplexed Address and Data Bit 7
PCI Multiplexed Address and Data Bit 8
PCI Multiplexed Address and Data Bit 9
PCI Multiplexed Address and Data Bit 10
PCI Multiplexed Address and Data Bit 11
PCI Multiplexed Address and Data Bit 12
PCI Multiplexed Address and Data Bit 13
PCI Multiplexed Address and Data Bit 14
PCI Multiplexed Address and Data Bit 15
PCI Multiplexed Address and Data Bit 16
PCI Multiplexed Address and Data Bit 17
PCI Multiplexed Address and Data Bit 18
PCI Multiplexed Address and Data Bit 19
PCI Multiplexed Address and Data Bit 20
PCI Multiplexed Address and Data Bit 21
PCI Multiplexed Address and Data Bit 22
PCI Multiplexed Address and Data Bit 23
PCI Multiplexed Address and Data Bit 24
PCI Multiplexed Address and Data Bit 25
PCI Multiplexed Address and Data Bit 26