參數(shù)資料
型號: C5NPD0-DS
英文描述: QUAD BILATERAL SWITCH FOR TRANSMISSION OR MULTIPLEXING OF ANALOG OR DIGITAL SIGNALS
中文描述: 的C - 5網(wǎng)絡(luò)處理器的數(shù)據(jù)資料硅修訂D0
文件頁數(shù): 41/100頁
文件大小: 2163K
代理商: C5NPD0-DS
Pin Descriptions Grouped by Function
41
MOTOROLA GENERAL BUSINESS INFORMATION
C5NPD0-DS/D REV 04
of the devices connected to the bus must have either an open-drain or open-collector in
order to perform the wired-AND function required for its arbitration mechanism.
PROM Interface Signals
The PROM interface is a low speed I/O port that allows the C-5 NP to communicate
through external logic to PROM. The PROM clock is
1
/
2
to
1
/
16
the core clock rate. The
maximum PROM size is 4MBytes x 16, and configuration is required. The PROM signals are
listed in
Table 16
.
Figure 4
shows the connections between the PROM Interface and external board logic.
The application is required to provide an external shift register with parallel-in and
parallel-out capabilities, and a parallel load register. Both devices should be
Table 15
Serial Port Signals
SIGNAL NAME
PIN #
TOTAL
TYPE
I/O
SIGNAL DESCRIPTION
SICL
O14
1
LVTTL
I/O
Serial Clock line
SIDA
N14
1
LVTTL
I/O
Serial Data line
TOTAL PINS
2
Table 16
PROM Interface Signals
SIGNAL
NAME
PIN #
TOTAL
TYPE
I/O
SIGNAL DESCRIPTION
SPDO
N15
1
LVTTL
O
Serial Data Out
SPDI
N16
1
LVTTL
I
Serial Data In
SPLD
M16
1
LVTTL
O
When load is asserted on a positive clock
edge, the external logic performs a parallel
load. On each positive clock edge when
load is de-asserted, the shift registers shift.
When the PROM interface is idle:
if SPLD is asserted HI it indicates low
speed serial protocol,
if asserted LOW it indicates MDIO serial
protocol.
SPCK
M14
1
LVTTL
O
Clock
TOTAL PINS
4
F
n
.
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