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參數(shù)資料
| 型號： | DS21348 |
| 英文描述： | 3.3V E1/T1/J1 Line Interface |
| 中文描述： | 3.3V、E1/T1/J1線路接口 |
| 文件頁數(shù)： | 11/73頁 |
| 文件大?。?/td> | 551K |
| 代理商： | DS21348 |
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DS21348/Q348
11 of 73
PIN DESCRIPTIONS IN PARALLEL PORT MODE
(
Sorted by Pin Name,
DS21348T Pin Numbering
) Table 4-2b
ACRONYM
PIN
I/O
DESCRIPTION
A0 to A4
11
to
7
4
I
Address Bus.
In nonmultiplexed bus operation (BIS1 = 0, BIS0 =
1), serves as the address bus. In multiplexed bus operation (BIS1 =
0, BIS0 = 0), these pins are not used and should be tied low.
Address Latch Enable (Address Strobe).
When using the parallel
port (BIS1 = 0) in multiplexed bus mode (BIS0 = 0), serves to
demultiplex the bus on a positive-going edge. In nonmultiplexed bus
mode (BIS0 = 1), should be tied low.
Bus Interface Select Bits 0 & 1.
Used to select bus interface option.
See Table 4-1 for details.
Back Plane Clock.
A 16.384MHz, 8.192MHz, 4.096MHz, or
2.048MHz clock output that is referenced to RCLK selectable via
CCR5.7 and CCR5.6. In hardware mode, defaults to 16.384MHz
output.
Chip Select.
Must be low to read or write to the device. CS* is an
active low signal.
Data Bus/Address/Data Bus.
In nonmultiplexed bus operation
(BIS1 = 0, BIS0 = 1), serves as the data bus. In multiplexed bus
operation (BIS1 = 0, BIS0 = 0), serves as an 8-bit multiplexed
address/data bus.
Hardware Reset.
Bringing HRST* low will reset the DS21348
setting all control bits to their default state of all zeros.
Interrupt [INT*] Pin 23.
Flags host controller during conditions
and change of conditions defined in the Status Register. Active low,
open drain output.
Master Clock.
A 2.048MHz (±50ppm) clock source with TTL
levels is applied at this pin. This clock is used internally for both
clock/data recovery and for jitter attenuation. Use of a T1 1.544
MHz clock source is optional.
See Note 2.
Not Assigned.
Should be tied low.
PRBS Bit Error Output.
The receiver will constantly search for a
2
15
-1 or a 2
20
-1 PRBS depending on the ETS bit setting (CCR1.7).
Remains high if out of synchronization with the PRBS pattern. Goes
low when synchronized to the PRBS pattern. Any errors in the
received pattern after synchronization will cause a positive going
pulse (with same period as E1 or T1 clock) synchronous with
RCLK. PRBS bit errors can also be reported to the ECR1 and ECR2
registers by setting CCR6.2 to a logic 1.
Parallel Bus Type Select.
When using the parallel port (BIS1 = 0),
set high to select Motorola bus timing, set low to select Intel bus
timing. This pin controls the function of the RD*(DS*), ALE(AS),
and WR*(R/W*) pins. If PBTS = 1 and BIS1 = 0, then these pins
assume the Motorola function listed in parenthesis (). In serial port
mode, this pin should be tied low.
ALE(AS)
I
BIS0/BIS1
32/33
I
BPCLK
31
O
CS*
1
I
D0 / AD0
to
D7 / AD7
19
to
12
I/O
HRST*
29
I
INT*
23
O
MCLK
30
I
NA
PBEO
-
I
24
O
PBTS
44
I
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS21348T | 3.3V E1/T1/J1 Line Interface |
| DS21348TN | 3.3V E1/T1/J1 Line Interface |
| DS21352 | 3.3V DS21352 and 5V DS21552 T1 Single-Chip Transceivers |
| DS21352L | 3.3V DS21352 and 5V DS21552 T1 Single-Chip Transceivers |
| DS21352LN | 3.3V DS21352 and 5V DS21552 T1 Single-Chip Transceivers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS21348DK | 功能描述:網(wǎng)絡(luò)開發(fā)工具 DS21348 Dev Kit RoHS:否 制造商:Rabbit Semiconductor 產(chǎn)品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評估:RCM6600W 數(shù)據(jù)速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V |
| DS21348G | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| DS21348G+ | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| DS21348G+W | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| DS21348GB | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
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