msm7630 Oki Semiconductor, msm7630 Datasheet - Page 83

• Manufacturer Part Number: msm7630
• Description: Universal Speech Processor
• Manufacturer: Oki Semiconductor

¡ Semiconductor
3) Write data to the input buffer (PIB).
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
2) Verify that the PSTS (Status Register) POST bit is "1", indicating that the output buffer POB is
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
5) When POST becomes "1" and PCMD’s POIE bit is "1", then a PIO interrupt to the CPU core will
6) Repeat the operation from step 3).
(B) External operation
1) Read the output buffer full output (POBF).
2) Verify that the output buffer full output (POBF) is "1".
3) Read the output buffer (POB).
4) When the output buffer is read, PSTS's POST bit will become "1".
5) Repeat the operation from step 1).
enable output operation.
empty.
"1".
be generated. This interrupt will be released by writing "0" to PSTS’s POST bit or by writing "0"
to PCMD’s POIE bit.
Chip select input
Flag/buffer select input PIOA
Read input
Write input
Input/output bus
Chip select input
Flag/buffer select input PIOA
Read input
Write input
Chip select input
Flag/buffer select input PIOA
Read input
Write input
Input/output bus
PCS
PACK
PSTB
PD[7:0]
PCS
PACK
PSTB
PCS
PACK
PSTB
PD[7:0]
0
1
1
0
Write data
0
0
0
1
0
1
0
1
Read data
MSM7630
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