ZL50019 ZARLINK [Zarlink Semiconductor Inc], ZL50019 Datasheet - Page 18
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ZL50019
Manufacturer Part Number
ZL50019
Description
Enhanced 2 K Digital Switch with Stratum 4E DPLL
Manufacturer
ZARLINK [Zarlink Semiconductor Inc]
Datasheet
1.ZL50019.pdf
(115 pages)
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R9, N10, P9,
M4, N6, R6,
R8, M9, N9,
M8, N8, P8,
P7, R7, N7,
PBGA Pin
H13, H15,
K13, K15,
G12, G13
J14, H12,
K14, J11,
J15, H11,
J12, J13,
Number
R10
N12
R12
B15
R11
N11
LQFP Pin
Number
16, 18,
20, 22,
23, 24,
25, 26,
27, 28,
30, 32,
34, 36,
82, 84,
86, 87,
88, 89,
90, 91,
92, 93,
94, 96,
37, 38
98, 99
141
44
40
39
42
Pin Name
DTA_RDY
R/W_WR
DS_RD
D0 - 15
A0 - 13
ODE
CS
Zarlink Semiconductor Inc.
Output Drive Enable (5 V-Tolerant Input with Internal Pull-up)
This is the output enable control for STio0 - 31 and the
output-driven-high control for STOHZ0 - 15. When it is high, STio0
- 31 and STOHZ0 - 15 are enabled. When it is low, STio0 - 31 are
tristated and STOHZ0 - 15 are driven high.
Data Bus 0 to 15 (5 V-Tolerant Slew-Rate-Limited Three-state
I/Os)
These pins form the 16-bit data bus of the microprocessor port.
Data Transfer Acknowledgment_Ready (5 V-Tolerant
Three-state Output)
This active low output indicates that a data bus transfer is
complete for the Motorola interface. For the Intel interface, it
indicates a transfer is completed when this pin goes from low to
high. An external pull-up resistor MUST hold this pin at HIGH level
for the Motorola mode. An external pull-down resistor MUST hold
this pin at LOW level for the Intel mode.
Chip Select (5 V-Tolerant Input)
Active low input used by the Motorola or Intel microprocessor to
enable the microprocessor port access.
Read/Write_Write (5 V-Tolerant Input)
This input controls the direction of the data bus lines (D0 - 15)
during a microprocessor access. For the Motorola interface, this
pin is set high and low for the read and write access respectively.
For the Intel interface, a write access is indicated when this pin
goes low.
Data Strobe_Read (5 V-Tolerant Input)
This active low input works in conjunction with CS to enable the
microprocessor port read and write operations for the Motorola
interface. A read access is indicated when it goes low for the Intel
interface.
Address 0 to 13 (5 V-Tolerant Inputs)
These pins form the 14-bit address bus to the internal memories
and registers.
ZL50019
18
Description
Data Sheet
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