參數(shù)資料
型號: AD1817A
廠商: Analog Devices, Inc.
英文描述: Multimedia Audio Subsystem For Concurrently Processing Multiple Digital Streams Of 16-bit Stereo Audio In Personal Computers.(可處理個人電腦的16位立體聲多重數(shù)字流的多媒體聲音子系統(tǒng))
中文描述: 多媒體音頻子系統(tǒng),為同時處理中的16多個數(shù)字信息流,在個人電腦。位立體聲音頻(可處理個人電腦的16位立體聲多重數(shù)字流的多媒體聲音子系統(tǒng))
文件頁數(shù): 38/44頁
文件大?。?/td> 269K
代理商: AD1817A
AD1817A
–38–
REV. 0
PRELIMINARY
DATA
O (2)
O (2)
O (2)
MDM_IRQ
I
MDM_SEL
O
IRQ(12)
O (2)
IRQ(13)
O (2)
LD_SEL
O
No Connect
O
96
LD_DRQ
VOL_UP
TECHNICAL
O (2)
USING T HE AD1817A WIT HOUT AN E E PROM
If the EEPROM is absent (EE_CLK pin = GND), then the flags are set as shown below:
MODEM_EN = X T RA_EN = SUPER_EN = X T RA_HV = RST B_EN = IRQ_EN = 0
IRQSEL9_14 = MIRQINV = X IRQINV = 0
IRQSEL4_10 = IRQSEL11_15 = IRQSEL4_9_11 = 1
I
2
S0_HV = EE_DAT A pin
PIN MUX ING IN T HE AD1817A
Some AD1817A options are mutually exclusive because there are a limited number of pins on the device to support them all. T he
tables below map functions to pin, and show how the flags must be set to assign functions to pins. For each pin, the first function
listed is the default; that function is used if the EEPROM is absent or invalid.
T able X II. AD1817A Pin Muxing
PQFP
Pin Function
I/O
Flags Required
1
2
3
VOL_UP
VOL_DN
I
I2S0_HV
GND
X CT L0/PCLK O
PNPRST
X CT L1/RING
LED_SEL1
IRQ(15)
IRQ(11)
IRQ(11)
IRQ(9)
IRQ(4)
IRQ(10)
IRQ(4)
IRQ(9)
IRQ(14)
IRQ(3)
IRQ(9)
O
O
O(1)
O
O (2)
O (2)
O (2)
O (2)
O (2)
O (2)
O (2)
I2S0_HV
!RST B_EN
RST B_EN
!X T RA_EN + !X T RA_CS
RST B_EN
IRQSEL15_11
IRQSEL4_9_11
!IRQSEL4_9_11* !MODEM_EN
!IRQSEL4_9_11* MODEM_EN
IRQSEL4_10
!IRQSEL4_10
!IRQSEL9_14
IRQSEL9_14
(MODEM_EN * SUPER_EN * IRQ_EN) * !IRQSEL3_9
(MODEM_EN * SUPER_EN * IRQ_EN) * IRQSEL3_9
MODEM_EN
MODEM_EN * !SUPER_EN
(!MODEM_EN + SUPER_EN) * IRQ_EN * !IRQSEL12_13
(!MODEM_EN + SUPER_EN) * IRQ_EN * IRQSEL12_13
X T RA_EN
!X T RA_EN * X T RA_HV
I
X T RA_EN * !X T RA_HV
I
X T RA_HV
68
69
75
76
77
78
81
82
83
97
98
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