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參數(shù)資料
| 型號(hào)： | OM5610 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 調(diào)諧器 |
| 英文描述： | Matchbox global FM tuner |
| 中文描述： | 1-BAND, AUDIO TUNER, XMA12 |
| 文件頁數(shù)： | 4/16頁 |
| 文件大?。?/td> | 80K |
| 代理商： | OM5610 |
1997 Apr 25
4
Philips Semiconductors
Preliminary specification
Matchbox global FM tuner
OM5610
Description of the bus
The OM5610 radio has a bus which consists of three
wires, as shown in Table 1.
Table 1
Bus signals
These three signals, together with the mono/stereo pin
(STEREO; pin 5), communicate with the microcontroller.
The mono/stereo indicator has two functions, which are
controlled by the CLCK, as shown in Table 2.
SIGNAL
DESCRIPTION
PIN
CLCK
DATA
WREN
software driven clock input
data input/output
write/read-input
4
6
3
Table 2
Bus-clock functions
The OM5610 has a 25-bit shift register; see Table 3 for an
explanation of the shift register bits.
If in search mode no transmitter can be found, all
frequency bits of the shift register are set to logic 0.
The bus protocol is depicted in Figs 2 and 3 and 4.
CLCK
STEREO (PIN 5)
RESULT
LOW
LOW
HIGH
HIGH
LOW
HIGH
LOW
HIGH
stereo
mono
tuned
not tuned
Table 3
Explanation of the shift register bits
BIT
DESCRIPTION
LOGIC STATE
RESULT
S.24 (MSB)
search start/end
0
1
0
1
0
1
0
0
0
1
0
after a search when a station is found or after a preset
during the search action
indicates if the radio has to search down
indicates if the radio has to search up
stereo is allowed
mono is required (radio switched to forced mono)
selects FM band
selects FM band
local
DX
D.23
search up/down
M.22
mono/stereo
B0.21
B1.20
P0.19
band
band
local/DX
P1.18
S0.17
S1.16
15
F.14 to F.0 (LSB)
not used
search-level of station
see Table 4
determines the locking field strength during a search
operation
dummy
frequency
0
buffer
determine the tuning frequency of the radio;
see Table 5 for the bit values
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