參數(shù)資料
型號(hào)： PCF50732H
廠商： NXP SEMICONDUCTORS
元件分類： 通信及網(wǎng)絡(luò)
英文描述： Baseband and audio interface for GSM
中文描述： SPECIALTY TELECOM CIRCUIT, PQFP48
封裝： PLASTIC, LQFP-48
文件頁數(shù)： 29/64頁
文件大?。?/td> 322K
代理商： PCF50732H
1999 May 03
29
Philips Semiconductors
Objective specification
Baseband and audio interface for GSM
PCF50732
12.3.6
V
OICE BAND CONTROL REGISTER
The Voice band control register is used to control the following functionality of the voice band CODEC:
Analog input source: microphone (MICAMP) or auxiliary (AUXMIC) input
Analog output device: earphone (EARAMP), auxiliary (AUXAMP) or buzzer (BUZAMP) output; this register allows
individual control of all three output amplifiers
EARAMP output mode: single-ended (EARP) or differential (EARN/EARP). This selects the input source for the
EARAMP-N amplifier. In single-ended mode EARAMP-N will be at V
ref
, in differential mode it will carry the output signal
General purpose output pin: AMPCTRL
Receive and transmit path delay values
ASI clock mode
TX gain boost (MICHI).
Table 22
Voice band control register (address 1010 and subaddresses)
X = don’t care during a read/or write access.
FUNCTION
SUBADDRESS
VALUE
FUNCTION SETTING
11
(s2)
10
(s1)
9
(s0)
8
7
6
5
4
3
2
1
0
Select input source
0
0
0
don’t care
0
1
0
1
X
X
X
X
X
X
0
1
0
1
a
a
0
1
0
1
MICAMP (default)
AUXMIC
EARAMP-P off
EARAMP-P on (default)
EARAMP-N off
EARAMP-N on (default)
AUXAMP off (default)
AUXAMP on
BUZAMP off (default)
BUZAMP on
single-ended
differential (default)
active LOW
active HIGH (default)
Select output amplifier
0
0
1
don’t care
X
X
X
X
X
X
0
1
X
X
X
X
0
1
X
X
X
X
0
1
X
X
X
X
EARAMP output mode
0
1
0
don’t care
AMPCTRL pin polarity
0
1
1
don’t care
Receive path data channel
Transmit path data channel
1
1
0
0
0
1
don’t care
d
d
c
c
b
b
4-bit delay value (default = 0)
ASI clock mode
1
1
0
don’t care
single clock (default)
double clock
7 dB
35 dB (default)
TX gain boost (MICHI)
1
1
1
don’t care
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