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參數(shù)資料
| 型號： | AN-05 |
| 英文描述： | SY69952 in an OC-3 Transmission System |
| 中文描述： | SY69952中的OC - 3傳輸系統(tǒng) |
| 文件頁數(shù)： | 2/6頁 |
| 文件大小： | 60K |
| 代理商： | AN-05 |
APPLICATION NOTE
AN-05
2
Micrel
PIN DEFINITIONS
Pin
Pin No.
Type
Description
ROUT+
1
Receive
If Unused NC or V
CC
. Route away from TX, & Digital Runs.
(1)
If Unused NC or V
CC
. Route away from TX, & Digital Runs.
(1)
Route away from TX, & Digital Runs.
(1)
Route away from TX, & Digital Runs.
(1)
ROUT
–
2
Receive
RIN+
3
Receive
RIN
–
4
Receive
MODE
5
Control
No/LOW Frequency Switching.
V
CC
6
Power
Isolation from system supply. Decouple with RF beads (or inductor or common mode
chokes), NPO/COG ceramic and tantalum caps.
(2)
CD
7
Control
LOW Frequency Switching. Routing should avoid noisy areas so run is not conduit. Use
common mode choke to isolate.
(2)
LOOP
8
Control
No/LOW Frequency Switching. Routing should avoid noisy areas so run is not a conduit.
Use common mode choke to isolate.
(2)
Route away from TX, & Digital Runs.
(1)
Route away from TX, & Digital Runs.
(1)
Route away from TX, & Digital Runs.
(1)
Route away from TX, & Digital Runs.
(1)
REFCLK
–
9
Reference
REFCLK+
10
Reference
TOUT
–
11
Transmit
TOUT+
12
Transmit
PLL1+
13
Transmit
Place filter components next to IC. Do not route any signal near or beneath these pins or
the TX filter connected to them. Use a ground guard around the filter components to
collapse fields.
PLL1
–
14
Transmit
Place filter components next to IC. Do not route any signal near or beneath these pins or
the TX filter connected to them. Use a ground guard around the filter components to
collapse fields.
PLL2
–
15
Receive
Place filter components next to IC. Do not route any signal near or beneath these pins or
the TX filter connected to them. Use a ground guard around the filter components to
collapse fields.
PLL2+
16
Receive
Place filter components next to IC. Do not route any signal near or beneath these pins or
the TX filter connected to them. Use a ground guard around the filter components to
collapse fields.
Route away from Receiver runs.
(1)
Route away from Receiver runs.
(1)
Route away from Receiver runs.
(1)
Route away from Receiver runs.
(1)
TSER
–
17
Transmit
TSER+
18
Transmit
TCLK+
19
Transmit
TCLK
–
20
Transmit
V
CC
21
Power
Isolation from system supply. Decouple with RF beads (or inductor or common mode
chokes), NPO/COG ceramic and tant caps.
(2)
V
EE
(GND)
22
Ground
Tie to system ground. If the system GND is noisy then isolation from system GND with RF
bead (or inductor or common mode choke). Ensure adequate current capacity.
(2)
V
CC
23
Power
Isolation from system supply. Decouple with RF beads (or inductor or common mode
chokes), NPO/COG ceramic and tant caps.
(2)
LFI
24
Alarm
LOW Frequency Switching. Routing should avoid noisy areas so run is not conduit. Use
common mode choke to isolate.
(2)
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