参数资料
型号: TAS3218IPZPR
厂商: TEXAS INSTRUMENTS INC
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP100
封装: GREEN, PLASTIC, TQFP-100
文件页数: 50/79页
文件大小: 1263K
代理商: TAS3218IPZPR
Slave I
2C Load RAM Block Formats
SLES235 – JULY 2008 ....................................................................................................................................................................................................... www.ti.com
Table 13. DSP Data RAM Block Structure
STARTING
DATA BLOCK FORMAT
SIZE
VALUE
NOTES
BYTE
Checksum MSB
0
2 byte
Checksum of byte 2 through N + 12
Checksum LSB
Header ID byte 1
0x00
2
2 byte
Must be 0x001F
Header ID byte 2
0x1F
Micro program RAM or micro external
4
Memory to be loaded
1 byte
0x04
data RAM
5
0x00
1 byte
0x00
Unused
Start memory address
MSB
If this is a termination header, this
6
2 byte
value is 0000
Start memory address
LSB
Total number of byte
transferred MSB
8
2 byte
Header (12) + data (N) + checksum (4)
Total number of byte
transferred LSB
10
0x00
1 byte
0x00
Unused
11
0x00
1 byte
0x00
Unused
Data byte 1 (LSB)
Data word 1 D7D0
Data byte 2
D15D8
Data byte 3
D23D16
12
6 byte
Data byte 4 (MSB)
D31D24
Data byte 5
D39D32
Data byte 6 (MSB)
D47D40
Data byte 7 (LSB)
Data byte 8
Data byte 9
18
6 byte
Data word 2
Data byte 10
Data byte 11
Data byte 12 (MSB)
0x00
Repeated checksum byte 2 through N
N + 12
6 byte
+11
Checksum MSB
Checksum LSB
The slave I2C bus permits the system controller to load the TAS3218 memories as an alternative to using the
master download from an external memory device via the I2C master bus. The transfer is performed by writing to
two I2C registers (0x04 and 0x05). The first register holds the header information, and the second register holds
eight bytes of data. Figure 39 shows the I2C slave download flow.
I2C slave download register format are described in Table 14 to Table 18. The I2C slave download process is
terminated when a termination header with zero length byte count field is received.
54
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TAS3218
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