參數(shù)資料
型號: DS21Q44T+
廠商: Maxim Integrated Products
文件頁數(shù): 9/105頁
文件大?。?/td> 0K
描述: IC FRAMER ENHANCED E1 4X 128TQFP
標(biāo)準(zhǔn)包裝: 72
控制器類型: E1 調(diào)幀器
接口: 并行/串行
電源電壓: 2.97 V ~ 3.63 V
電流 - 電源: 75mA
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 128-LQFP
供應(yīng)商設(shè)備封裝: 128-LQFP(14x20)
包裝: 管件
DS21Q44
11 of 105
Table 2-2. PIN DESCRIPTION SORTED BY PIN FUNCTION, FMS = 0
PIN
SYMBOL
TYPE
DESCRIPTION
108
8MCLK
O
8MHz Clock
23
A0
I
Address Bus Bit 0; LSB
24
A1
I
Address Bus Bit 1
25
A2
I
Address Bus Bit 2
26
A3
I
Address Bus Bit 3
27
A4
I
Address Bus Bit 4
28
A5
I
Address Bus Bit 5
29
A6/ALE (AS)
I
Address Bus Bit 6; MSB or Address Latch Enable (Address
Strobe)
46
A7
I
Address Bus Bit 7
61
BTS
I
Bus Type Select for Parallel Control Port
112
CLKSI
I
8MCLK Clock Reference Input
60
CS*
I
Chip Select
117
D0 or AD0
I/O
Data Bus Bit or Address/Data Bit 0; LSB
118
D1 or AD1
I/O
Data Bus Bit or Address/Data Bit 1
119
D2 or AD2
I/O
Data Bus Bit or Address/Data Bit 2
120
D3 or AD3
I/O
Data Bus Bit or Address/Data Bit 3
121
D4 or AD4
I/O
Data Bus Bit or Address/Data Bit 4
122
D5 or AD5
I/O
Data Bus Bit or Address/Data Bit 5
123
D6 or AD6
I/O
Data Bus Bit or Address/Data Bit 6
124
D7 or AD7
I/O
Data Bus Bit or Address/Data Bit 7; MSB
47
FMS
I
Framer Mode Select
58
FS0
I
Framer Select 0 for Parallel Control Port
59
FS1
I
Framer Select 1 for Parallel Control Port
30
INT*
O
Receive Alarm Interrupt for all Four Framers
52
JTCLK
I
JTAG Test Clock
84
JTDI
I
JTAG Test Data Input
86
JTDO
O
JTAG Test Data Output
50
JTMS
I
JTAG Test Mode Select
18
JTRST
I
JTAG Reset
64
MUX
I
Nonmultiplexed or Multiplexed Bus Select
10
RCHBLK0
O
Receive Channel Block from Framer 0
44
RCHBLK1
O
Receive Channel Block from Framer 1
80
RCHBLK2
O
Receive Channel Block from Framer 2
104
RCHBLK3
O
Receive Channel Block from Framer 3
6
RCLK0
I
Receive Clock for Framer 0
40
RCLK1
I
Receive Clock for Framer 1
74
RCLK2
I
Receive Clock for Framer 2
100
RCLK3
I
Receive Clock for Framer 3
62
RD*/(DS*)
I
Read Input (Data Strobe)
17
RFSYNC0
O
Receive Frame Sync from Framer 0
51
RFSYNC1
O
Receive Frame Sync from Framer 1
85
RFSYNC2
O
Receive Frame Sync from Framer 2
109
RFSYNC3
O
Receive Frame Sync from Framer 3
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