SC2200 NSC [National Semiconductor], SC2200 Datasheet - Page 337

• Manufacturer Part Number: SC2200
• Description: Thin Client On a Chip
• Manufacturer: NSC [National Semiconductor]

Revision 3.0
Video Processor Module
6.3.2
The register space designated as Function 4 (F4) is used
to configure the PCI portion of support hardware for
accessing the Video Processor support registers, including
VIP (separate BAR). The bit formats for the PCI Header
registers are given in Table 6-6.
Index 00h-01h
Index 02h-03h
Index 04h-05h
Index 06h-07h
Index 08h
Index 09h-0Bh
Index 0Ch
Index 0Dh
Index 0Eh
Index 0Fh
Index 10h-13h
Video Processor Video Memory Address Space. This register allows PCI access to the memory mapped Video Processor configura-
tion registers. Bits [11:0] are read only (0000 0000 0000) indicating a 4 KB memory address range. See Table 6-7 on page 339 for bit for-
mats and reset values of the registers accessed through this base address register.
Index 14h-17h
Reserved
Index 18h-1Bh
VIP Address Space. This register allows access to memory mapped VIP (Video Interface Port) related registers. Bits [11:0] are read
only (0000 0000 0000), indicating a 4 KB I/O address range. Refer to Table 6-8 for the VIP register bit formats and reset values.
Index 1Ch-2Bh
Index 2Ch-2Dh
Index 2Eh-2Fh
Index 30h-3Bh
Index 3Ch
This register identifies the system interrupt controllers to which the device’s interrupt pin is connected. The value of this register is used
by device drivers and has no direct meaning to this function.
31:12
31:12
15:2
11:0
11:0
Bit
1
0
Video Processor Registers - Function 4
Description
Reserved. (Read Only)
Memory Space. Allow the Core Logic module to respond to memory cycles from the PCI bus.
0: Disable.
1: Enable.
This bit must be enabled to access memory offsets through F4BAR0, F4BAR1, and F4BAR2 (see F4 Index 10h, 14h, and
18h).
Reserved. (Read Only)
Video Processor Video Memory Base Address.
Address Range. (Read Only)
VIP Base Address.
Address Range. (Read Only)
Table 6-6. F4: PCI Header Registers for Video Processor Support Registers
(Continued)
Base Address Register 0 - F4BAR0 (R/W)
Base Address Register 1 - F4BAR1 (R/W)
Base Address Register 2 - F4BAR2 (R/W)
Vendor Identification Register (RO)
Device Identification Register (RO)
PCI Cache Line Size Register (RO)
Device Revision ID Register (RO)
PCI Latency Timer Register (RO)
PCI Class Code Register (RO)
PCI Command Register (R/W)
Interrupt Line Register (R/W)
Subsystem Vendor ID (RO)
PCI Status Register (RO)
PCI BIST Register (RO)
PCI Header Type (RO)
Subsystem ID (RO)
Reserved
Reserved
337
Located in the PCI Header Registers of F4 are three Base
Address Registers (F4BARx) used for pointing to the regis-
ter spaces designated for Video Processor support.
F4BAR0 is for Video Processor Configuration, F4BAR1 is
reserved, and F4BAR2 is for VIP configuration.
Reset Value: 00000000h
Reset Value: 00000000h
Reset Value: 00000000h
Reset Value: 030000h
Reset Value: 100Bh
Reset Value: 100Bh
Reset Value: 0504h
Reset Value: 0000h
Reset Value: 0280h
Reset Value: 0504h
Reset Value: 01h
Reset Value: 00h
Reset Value: 00h
Reset Value: 00h
Reset Value: 00h
Reset Value: 00h
Reset Value: 00h
Reset Value: 00h
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