F65510

Manufacturer Part NumberF65510
DescriptionControllers, Flat Panel VGA Controller
ManufacturerIntel Corporation
F65510 datasheet
 
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Standby Mode
In the Standby mode of operation, the 65510
suspends all CPU, memory, and display activites.
The 65510 places the DRAM in its self-refresh
mode of operation, and the 65510's clock input can
be shut off after a delay of 64µs from STNDBY/
going low. The VGA sub-system dissipates mini-
mum power during Standby mode. Since the 65510
is a fully static device, the contents of the
controller's registers and on-chip palette are
maintained during Standby.
mode provides fast Suspend/Resume modes.
Standby mode is activated when the STNDBY/ pin
is forced low. The status of the video interface sig-
nals during standby is shown in the table below:
T65510
F65510
SIGNAL
PIN#
PIN#
NAME
51
53
FLM
Inactive - driven low
50
52
LP
Inactive - driven low
62
64
SHFCLK Inactive - driven low
63
65
ACDCLK Inactive - driven low
53
55
P0
Inactive - driven low
54
56
P1
Inactive - driven low
55
57
P2
Inactive - driven low
56
58
P3
Inactive - driven low
57
59
P4
Inactive - driven low
58
60
P5
Inactive - driven low
59
61
P6
Inactive - driven low
60
62
P7
Inactive - driven low
CPU BUS INTERFACE
The 65510 provides a direct interface to the 386
DX/SX local bus, x86 SL PI ("Peripheral Interface")
bus, MC (MicroChannel) bus and EISA/ISA
(PC/AT) bus.
Strap options allow the user to
configure the chip for the type of interface desired.
Control signals for all interface types are integrated
on chip.
The 65510's linearly addressable video
memory allows the CPU to linearly address the 512
KBytes of video memory, enabling the use of high-
performance 32-bit software drivers.
PROGRAMMABLE OUTPUT DRIVE
The 65510 provides register programmable func-
tionality to double the output drive on all the output
pins. Refer to the pin list tables for the T65510
(TQFP)
and
F65510
(PQFP)
specifications. Extension register 6C (XR6C), the
programmable output drive register, bits 2-4
provide selection of normal drive or "doubled"
Revision 0.7
drive on the panel interface outputs, bus interface
output and memory interface outputs respectively.
For example, memory address lines MA0-MA8
have 2mA drive and the output drive can be dou-
bled to 4mA by setting XR6C bit-4 to 1.
CPU ACTIVITY INDICATOR
In the ISA bus configuration, the 65510 provides an
output pin called ACTIND (pin 49 on F65510) to
facilitate an orderly powerdown sequence.
Therefore, Standby
ACTIND output is an active high signal which is
driven high every time a valid VGA
read/write operation or VGA I/O read/write opera-
tion is executed by the CPU. This signal may be
used by the power management circuitry to put the
65510 in PNLOFF or STANDBY power down
modes. The ACTIND output (pin 49 on F65510)
SIGNAL
may be configured to be the ERMEN/ output in the
STATUS
ISA Bus configuration. When the CPU executes a
memory read or write cycle in text mode, ERMEN/
goes low two MCLK cycles prior to the fall of
RAS/ and stays active until RAS/ is asserted.
ERMEN/ is driven high in graphics modes and
during all display refresh accesses. The ACTIND
pin may be configured to be ERMEN/ by setting
XR28 bit-3.
HIGH PERFORMANCE FEATURES
The 65510 includes a number of performance-
enhancement techniques, which provide good
performance at low clock frequencies (resulting in
low power consumption). The 65510's x86 SL PI
and 386 DX/SX local bus operation provide
significantly higher performance than the slower
ISA bus. The 65510's 8-bit internal data path
provides high performance in 256-color modes.
The 65510's internal asynchronous FIFO design
provides minimum wait-state reads and fast display
updates. The 65510's linearly addressable video
memory allows the CPU to linearly address the 512
KBytes of video memory, enabling the use of high-
performance 32-bit software drivers.
DISPLAY ENHANCEMENT FEATURES
Display quality is one of the most important
features for the success of any flat panel-based
system.
enhance the flat panel display quality.
Superior Display Quality
for
drive
The 65510 produces up to 64 flicker-free gray
scales on monochrome or grayscale panels.
Because most application software is written for
7
Introduction
The 65510 provides many features to
Preliminary 65510
The
memory