IDT821068PX IDT, Integrated Device Technology Inc, IDT821068PX Datasheet - Page 8

• Manufacturer Part Number: IDT821068PX
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: General Purposer

Specifications of IDT821068PX

• Number Of Adc's: 8
• Number Of Dac's: 8
• Interface Type: Serial
• Power Supply Type: Analog/Digital
• Operating Supply Voltage (min): 4.75V
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.25V
• Pin Count: 128
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Screening Level: Industrial
• Package Type: PQFP
• Mounting: Surface Mount
• Lead Free Status / Rohs Status: Not Compliant

Linear GCI Structure
each GCI time slot consists of four 8-bit bytes. Four of the 8 time slots
are used as Monitor Channel and C/I octet, they have a common data
structure:
data/coefficients from/to the device for channel A and B.
together with an MX bit and an MR bit. All real time signaling
information is carried on the C/I channel sub-byte. The MX (Monitor
Table 2 - Time Slot Selection for linear GCI
IDT821068 OCTAL PROGRAMMABLE PCM CODEC
In GCI linear mode, one GCI frame consists of 8 GCI time slots,
- Two Don’t Care bytes.
- One monitor channel byte, which is used for reading/writing control
- One C/I byte, which contains a 6 bit width C/I channel sub-byte
IDT821068
Channels
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
FSC
DCL
DD
DU
Detail A
DD
DU
Detail B
DD
DU
Figure 5. Linear GCI Frame Structure When TS Is Low
Timeslot0
Timeslot0
Timeslot1
Timeslot1
Timeslot2
Timeslot2
Timeslot3
Timeslot3
Timeslot4
Timeslot4
Timeslot5
Timeslot5
Timeslot6
Timeslot6
Timeslot7
Timeslot7
Timeslot
Detail A
TS0
TS0
16-bit Linear Voice Data for Channel A
16-bit Linear Voice Data for Channel A
Don't Care
Don't Care
TS0-3 for Monitor and C/I
TS1
TS1
Monitor and C/I
TS2
TS2
Don't Care
Don't Care
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
8
TS3
TS3
Transmit) bit and MR (Monitor Receive) bits are used for handshaking
functions for channel A and B. Both MX and MR bits are active low.
complement). Each time slot consists of two 16-bit linear voice data
bytes: one byte contains the linear voice data for channel A, the other
byte contains the linear voice data for channel B.
TS is low, the linear GCI Frame Structure is shown in Figure 5.
the eight channels of IDT821068. See Table 2 for detailed information
about time slot assignment for linear mode.
125 s
Other four GCI time slots are used for linear voice data (16-bit 2’s
The GCI time slot assignment is determined by the TS pin. When
In linear operation, total eight GCI time slots are required to access
TS = 0
TS = 1
Detail B
Monitor Channel C/I Channel
Monitor Channel C/I Channel
TS4
TS4
16-bit Linear Voice Data for Channel B
16-bit Linear Voice Data for Channel B
TS4-7 for Linear Voice
Timeslot4
Timeslot4
Timeslot5
Timeslot5
Timeslot6
Timeslot6
Timeslot7
Timeslot7
Timeslot0
Timeslot0
Timeslot1
Timeslot1
Timeslot2
Timeslot2
Timeslot3
Timeslot3
Timeslot
TS5
TS5
Data
TS6
TS6
INDUSTRIAL TEMPERATURE RANGE
TS7
TS7
Voice Channel
M
M
R
R
M
X
M
X
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B