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參數(shù)資料
| 型號(hào)： | MSM7582B |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | pie/4 Shift QPSK MODEM |
| 中文描述： | 餡餅/ 4移調(diào)制調(diào)制解調(diào)器 |
| 文件頁數(shù)： | 6/24頁 |
| 文件大?。?/td> | 181K |
| 代理商： | MSM7582B |
Semiconductor
MSM7582/7582B
6/24
MSM7582B
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9
D10 D11 D12 D13
Dn-1
Dn
TXD
TXCI
(384 kHz)
TXW
TXCO
(384 kHz)
I, Q
Ramp rise-up
2 symbols
Delay of 6.25 symbols
Ramp fall-down
2 symbols
Delay of 6.25 symbols
(1) CR0 – B6 = "0"
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9
D10 D11 D12 D13
Dn-1
Dn
TXD
TXCI
(3.84 MHz)
TXW
TXCO
(384 kHz)
I, Q
Ramp rise-up
2 symbols
Delay of 6.25 symbols
Ramp fall-down
2 symbols
Delay of 6.25 symbols
(2) CR0 – B6 = "1"
Figure 1-2 Transmit Timing Diagram
I+, I–
Quadrature modulation signal I component differential analog outputs.
Their output levels are 500 mV
pp
with 1.6 Vdc as the center value. The output pin load conditions
are: R
≥
10 k
W
, C
≤
20 pF. The gain of these pins can be adjusted using the control register CR1
– B7 to B4, and the offset voltage at the I– pin can be adjusted using CR3 – B7 to B3.
Q+, Q–
Quadrature modulation signal Q component differential analog outputs.
Their output levels are 500 mV
PP
with 1.6 Vdc as the center value. The output pin load conditions
are: R
≥
10 k
W
, C
≤
20 pF. The gain of these pins can be adjusted using the control register CR1
– B3 to B0, and the offset voltage at the Q– pin can be adjusted by using CR4 – B7 to B3.
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