參數(shù)資料
型號(hào)： T8538A
廠商： Lineage Power
元件分類(lèi)： Codec
英文描述： Quad Programmable Codec(四通道可編程編解碼器)
中文描述： 四可編程編解碼器（四通道可編程編解碼器）
文件頁(yè)數(shù)： 11/42頁(yè)
文件大?。?/td> 1019K
代理商： T8538A
Lucent Technologies Inc.
11
Advance Data Sheet
October 2000
T8538A Quad Programmable Codec
Functional Description
(continued)
The Control Interface
(continued)
Protocol
(continued)
* Location of memory bank selection. All user controls are in memory bank 0; other memory banks contain internal state information for the
device.
Note: Data field length is in bytes for all operations. All data is transmitted in bytes with the LSB for each byte transmitted first. For 16-bit mem-
ory operations, the least significant byte of the first memory location is transmitted first, followed by the most significant byte; each byte is
transmitted LSB first. Additional memory locations are loaded in ascending sequence.
Figure 4. Command Frame Format, Master to Slave, Read or Write Commands
Note: All data is transmitted in bytes with the LSB for each byte transmitted first. For memory operations, the least significant byte of the first
memory location is transmitted first, followed by the most significant byte, each byte transmitted LSB first. Additional memory locations
are loaded in ascending sequence.
Figure 5. Command Frame Format, Slave to Master, Read Commands
LSB
COMMAND (8 bits)
MSB LSB
MSB LSB
MSB LSB
START ADDRESS (8 bits)
DATA FIELD LENGTH (8 bits)
DATA FIELD (VARIABLE LENGTH) WRITE OPERATIONS ONLY
TIME
7
6
5
4
3
2
1
0
MSB
LSB
START ADDRESS:
7
6
5
4
3
2
1
0
MSB
LSB
DATA FIELD LENGTH:
7
6
5
4
3
2
1
0
MSB
0*
LSB
COMMAND:
0*
CKT
SELECT
0
0
COMMAND
CKT SELECT:
CKT a:
CKT b:
CKT c:
CKT d:
00
01
10
11
COMMANDS: FAST SCAN MODE:
WRITE MEMORY:
WRITE ALL CHANNELS:
READ MEMORY:
10
01
11
00
LSB
DATA FIELD (VARIABLE LENGTH) READ OPERATIONS ONLY
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