SC2200 NSC [National Semiconductor], SC2200 Datasheet - Page 232
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SC2200
Manufacturer Part Number
SC2200
Description
Thin Client On a Chip
Manufacturer
NSC [National Semiconductor]
Datasheet
1.SC2200.pdf
(433 pages)
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Core Logic Module
Offset 14h-17h
Offset 18h-1Bh
Offset 1Ch-1Fh
31:16
31:16
31:0
15:0
15:0
Bit
Description
GPIO Data In. Bits [31:0] of this register correspond to GPIO63-GPIO32 signals, respectively. Reading each bit returns the
value of the corresponding GPIO signal, regardless of the signal configuration and the GPDO1 register (F0BAR0+I/O Offset
10h) value. Writes to this register are ignored.
0: Corresponding GPIO signal level low.
1: Corresponding GPIO signal level high.
Reserved. Must be set to 0.
GPIO Power Management Event (PME) Enable. Bits [15:0] of this register correspond to GPIO47-GPIO32 signals,
respectively. Each bit allows PME generation by the corresponding GPIO signal.
0: Disable PME generation.
1: Enable PME generation.
Notes: 1) All of the enabled GPIO PMEs are always reported at F1BAR1+I/O Offset 10h[3].
Reserved. Must be set to 0.
GPIO Status. Bits [15:0] correspond to GPIO47-GPIO32 signals, respectively. Each bit reports a 1 when hardware detects
the edge (rising/falling on the GPIO signal) that is programmed in F0BAR0+I/O Offset 24h[5]. If the corresponding bit in
F0BAR0+I/O Offset 18h is set, this edge generates a PME.
0: No active edge detected since the bit was last cleared.
1: Active edge detected.
Writing 1 to the a Status bit clears it to 0.
This is the third level of SMI status reporting to the second level at F0 Index 87h/F7h[7] and the top level at F1BAR0+I/O
Offset 00h/02h[0]. Clearing the third level also clears the second and top levels.
This is the second level of SCI status reporting to the top level at F1BAR1+Offset 10h[3]. The status must be cleared at both
the this level and the top level (i.e., the top level is not automatically cleared when a bit in this register is cleared).
Table 5-30. F0BAR0+I/O Offset: GPIO Configuration Registers (Continued)
2) Any enabled GPIO PME can be selected to generate an SCI or SMI at F1BAR1+I/O Offset 0Ch[0].
If SCI is selected, the individually selected GPIO PMEs are globally enabled for SCI generation at
F1BAR1+I/O Offset 12h[3] and the status is reported at F1BAR1+I/O Offset 10h[3].
If SMI is selected, the individually selected GPIO PMEs generate an SMI and the status is reported at
F1BAR0+I/O Offset 00h/02h[0].
(Continued)
GPIEN1 — GPIO Interrupt Enable 1 Register (R/W)
GPST1 — GPIO Status 1 Register (R/W1C)
GPDI1 — GPIO Data In 1 Register (RO)
232
Reset Value: FFFFFFFFh
Reset Value: 00000000h
Reset Value: 00000000h
Revision 3.0
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