Microchip Technology dsPIC30F - Page 728

dsPIC30F Family Reference Manual
DS70074C-page 26-30 © 2004 Microchip Technology Inc.
Figure C-4: AC-Link Data Frame
Figure C-5: SDATA_IN Bit Locations for SLOT#0, SLOT#1, SLOT#2
Tag
Frame
Command
Address
Command
Data
Slot3
Left PCM
Data
Slot 4
Right PCM
Data
Slot 10
Line 2
DAC
Slot 11
Handset
DAC
Slot 12
Codec I/O
Control
Tag
Frame
Status
Address
Status
Data
Slot3
Left PCM
Data
Slot 4
Right PCM
Data
Slot 10
Line 2
ADC
Slot 11
Handset
ADC
Slot 12
Codec I/O
Status
16 20 20 20 20 20 20 20
256
SDATA_OUT
SDATA_IN
SYNC
SLOT#0: TAG Slot
SLOT#1: Control Address Echo And SLOTREQ Bits
Codec
Ready
Slot 1
Valid
Slot 2
Valid
Slot 3
Valid
Slot 4
Valid
Slot 5
Valid
Slot 6
Valid
Slot 7
Valid
Slot 9
Valid
Slot 10
Valid
Slot 11
Valid
Slot 12
Valid
Slot 8
Valid
___ ___ ___
bit 0
bit 15
Resvd
0
Slot 4 Slot 5 Slot 6 Slot 7Slot 3 Slot 8 Slot 9 Slot 10
bit 0
bit 19 bit 18 bit 12
Control Register Index Echo
(Set to 0siftaggedinvalidbyAC'97codec.)
Slot 11
Slot 12
Reserved
(set to 0)
bits 11-2: On demand data request flags – 0 = send data, 1 = do NOTsend data
bit 11
bit 2
bit 0
bit 19
Control Register 16-bit Read Data
(Set to 0siftaggedinvalidbyAC'97codec.)
Reserved
(set to 0)
bit 4
SLOT#2: Codec Control Register Read Data