參數(shù)資料
型號(hào)： PCF50732
廠商： NXP Semiconductors N.V.
英文描述： Baseband and audio interface for GSM
中文描述： 用于GSM基帶和音頻接口
文件頁數(shù)： 20/64頁
文件大?。?/td> 322K
代理商： PCF50732
1999 May 03
20
Philips Semiconductors
Objective specification
Baseband and audio interface for GSM
PCF50732
10.3.2.3
Audio Serial Interface (ASI) timing characteristics
Table 7
ASI timing characteristics
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNIT
t
16
t
17
t
18
t
19
t
20
t
21
t
40
frame sync (AFS) set-up time to falling edge of ACLK
frame sync (AFS) hold time from falling edge of ACLK
ACLK rising edge to data (ADO) valid
data (ADI) set-up time to falling edge of ACLK
data (ADI) hold time from falling edge of ACLK
first data valid (ADO) after AFS rising edge
ACLK period
single clock mode
double clock mode
AFS period
ACLK LOW before AFS rising edge
70
40
30
50
80
0
+30
60
ns
ns
ns
ns
ns
ns
0.5
0.5
40
125
7.8
3.9
μ
s
μ
s
μ
s
ns
t
41
t
42
Fig.9 Timing of the Audio Serial Interface (ASI).
handbook, full pagewidth
MGR994
single
clock
mode
ADO
ACLK
AFS
ADI
t41
last slot
last bit
last slot
last bit
first slot
first bit
MSB
LSB
first slot
second bit
last slot
last bit
last slot
last bit
first slot
first bit
MSB
LSB
first slot
second bit
double
clock
mode
ADO
ADI
last slot
last bit
last slot
last bit
first slot
first bit
MSB
LSB
high-Z
high-Z
slot 1
bit 2
last slot
last bit
last slot
last bit
first slot
first bit
MSB
LSB
slot 1
bit 2
t16
t42
t17
t40
t21
t20
t18
t19
t19
t20
t21
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