參數(shù)資料
型號: MT312
廠商: ZARLINK SEMICONDUCTOR INC
元件分類: 消費家電
英文描述: Satellite Channel Decoder
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP80
封裝: MQFP-80
文件頁數(shù): 80/90頁
文件大?。?/td> 318K
代理商: MT312
MT312
Electrical Characteristics
80
12.5 MT312 Pinout Description
Pin
Name
Description
I/O
Note
V
mA
4,5,6,7,8,11,12
ADDR[7:1]
Primary 2-wire bus address de
fi
ning pins
I/O
CMOS
3.3
5
1
1
14
MICLK
MPEG clock input used to generate
MOCLK. Enabled when both register 96
bit 7 and register 97 bit 7 are set high. In
this mode, MICLK must be continuous.
I
CMOS
16
TESTCLK
External ADC mode clock.
O
PECL
Tri-
state
3.3
18
XTI
Crystal clock input or external reference
clock input.
I
CMOS
3.3
19
XTO
Crystal output. An internal feedback
resistor to XTI is included
O
CMOS
3.3
23
PLL1
Phase Locked Loop test output
23
26
VRT
ADC Voltage top reference level
26
27
IREF
I channel de-coupling input
I
28
ISINGP
I channel input
I
29
NC
No connection
I
32
VRM
ADC Voltage middle reference level
33
QSINGP
Q channel input
I
34
QREF
Q channel de-coupling input
I
35
VRB
ADC Voltage bottom reference level
38
RREF
Bias level
39
TEST1
For factory test only. This pin must be
connected to VSS in normal operation
I
CMOS
3.3
40
TEST2
For factory test only. This pin must be
connected to VSS in normal operation
I
CMOS
3.3
43
AGC
AGC sigma-delta output
O
Open
drain
5
1
6
46,45,44
GPP[2:0]
(DISEQC2)
General Purpose Port for tuner control,
register de
fi
ned.
GPP0 = secondary CLK2,
GPP1 = secondary DATA2,
GPP2 = DiSEqC
v2.2 input signal.
I/O
Open
drain
5
1
6
47
DISEQC1
DiSEqC
Horizontal/Vertical control
O
CMOS
3.3
1
48
DISEQC0
DiSEqCTM 22kHz output
O
CMOS
3.3
5
1
1
49
RESET
Active low reset input
I
CMOS
52
STATUS
Audio BER or Status output, register
de
fi
ned
O
CMOS
3.3
1
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