參數資料
型號: MSM7630
廠商: OKI SEMICONDUCTOR CO., LTD.
英文描述: Universal Speech Processor(通用語音處理器)
中文描述: 通用語音處理器(通用語音處理器)
文件頁數: 77/89頁
文件大?。?/td> 430K
代理商: MSM7630
MSM7630
Semiconductor
77/89
3) Write data to the input buffer (PIB).
Chip select input
Flag/buffer select input PIOA
Read input
Write input
Input/output bus
PCS
0
1
1
0
Write data
PACK
PSTB
PD[7:0]
4) Repeat the operation from step 1).
5.3.2 Data Output to External Device
(A) SCP operation
1) Write "00" to the PCMD (Command Register) PMOD bits. Also write "1" to PCMD’s POEN bit to
enable output operation.
2) Verify that the PSTS (Status Register) POST bit is "1", indicating that the output buffer POB is
empty.
3) Write data to the output buffer POB.
4) Write "0" to PSTS’s POST bit. When POST is "0", the output buffer full output (POBF) will become
"1".
5) When POST becomes "1" and PCMD’s POIE bit is "1", then a PIO interrupt to the CPU core will
be generated. This interrupt will be released by writing "0" to PSTS’s POST bit or by writing "0"
to PCMD’s POIE bit.
6) Repeat the operation from step 3).
(B) External operation
1) Read the output buffer full output (POBF).
Chip select input
Flag/buffer select input PIOA
Read input
Write input
PCS
0
0
0
1
PACK
PSTB
2) Verify that the output buffer full output (POBF) is "1".
3) Read the output buffer (POB).
Chip select input
Flag/buffer select input PIOA
Read input
Write input
Input/output bus
PCS
0
1
0
1
Read data
PACK
PSTB
PD[7:0]
4) When the output buffer is read, PSTS's POST bit will become "1".
5) Repeat the operation from step 1).
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