msm7630 Oki Semiconductor, msm7630 Datasheet - Page 79

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

¡ Semiconductor
3.5 PCMD: PIO Command Register
This register specifies the parallel port mode and specifies whether interrupts are enabled or
disabled. It will be "00000000" after reset.
• bit[7:6] PMOD
• bit[5] POEN
• bit[4] PIEN
• bit[1] POIE
• bit[0] PIIE
4. PIO Register Addresses
For the MSM7630, PIO register addresses are listed below.
bit
00 : Bus control mode
01 : Handshake control mode
1x : Software control mode
0 : Output operation disabled
1 : Output operation enabled
0 : Input operation disabled
1 : Input operation enabled
0 : Output buffer empty interrupts disabled
1 : Output buffer empty interrupts enabled
0 : Input buffer full interrupts disabled
1 : Input buffer full interrupts enabled
7
M
P
O
D
6
O
N
5
P
E
N
4
P
E
I
3
0 0
2
O
1
P
E
I
0
P
E
I
I
0xFB000000
0xFB000004
0xFB000008
0xFB00000C
0xFB000010
PIO Input Buffer
PIO Output Buffer
PIO Direction Register
PIO Status Register
PIO Command Register
MSM7630
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