MN85571AC PANASONIC [Panasonic Semiconductor], MN85571AC Datasheet - Page 12

• Manufacturer Part Number: MN85571AC
• Description: Single-Chip Audio/Video MPEG2 Encoder
• Manufacturer: PANASONIC [Panasonic Semiconductor]

MN85571AC
12
1. Host interface (continued)
2) Indirect addressing access
Interfaces (continued)
(1) The indirect address value is written to INADR0 (HA[3:0] = $6). This sets the indirect address.
(2) Data is read from INDAT0 (HA[3:0] = $8). At this time the data at the address set in INADR0 is read out over
(1) The indirect address value is written to INADR0 (HA[3:0] = $6). This sets the indirect address. (Since writes
(2) Data is written to INDAT0 (HA[3:0] = $8). This latches the lower 16 bits of the data.
(3) Another data is written to INDAT0 (HA[3:0] = $8). This, in conjunction with the 16 bits of data acquired in
[Read]
[Write]
HA[3:0]
NHCS
NHWE
NHRE
HD[15:0]
HA[3:0]
NHCS
NHWE
NHRE
HD[15:0]
this device's internal bus, although it appears to be read out from INDAT0. This completes the read operation.
At the same time, the value stored in INADR0 is automatically incremented (auto increment).
are performed in 32-bit units, the set indirect address must be an even value.)
step (2) above, forms a 32-bit data unit, which is then written over the internal data bus. At the same time, the
value stored in INADR0 is automatically incremented by 2 (auto increment).
Write to INADR0
HA[3:0] $6
Write to INADR0
HA[3:0] $6
Address
Address
SDD00023AEM
Write to INADR0
HA[3:0] $8
Data[15:0]
"H"
Read from INDAT0
HA[3:0] $8
The value in INADR0 is incremented
and now points to <address + 1>.
Write to INADR0
Read Data
HA[3:0] $8
The data (Data[31:0]) is written and
INADR0 is incremented by 2. INADR0
now points to <address + 2>.
Data[31:16]