h8s2277 Renesas Electronics Corporation., h8s2277 Datasheet - Page 498

• Manufacturer Part Number: h8s2277
• Description: Hitachi Single-chip Microcomputer H8s/2276 Series
• Manufacturer: Renesas Electronics Corporation.

decoder II clears the buffer, turns off decoding by clearing the ON bit in the Control Packet, and
sets this bit. Cleared when read. This bit is initialized to 0 when the FLEX™ decoder II is reset.
x: Unused bits. The value of these bits is not guaranteed.
14.4.8
The Part ID Packet is sent by the FLEX™ decoder II whenever the FLEX™ decoder II is disabled
due to the checksum feature. See 14.3.1, Checksum Packet for a description of the checksum
feature. Since the FLEX™ decoder II is disabled after reset, this is the first packet that will be
received by the host after reset. The ID of the Part ID Packet is 255 (decimal).
Table 14.29 Part ID Packet Bit Assignments
Byte 3
Byte 2
Byte 1
Byte 0
MDL: Model. This identifies the FLEX™ decoder II model. Current value is 0.
CID: Compatibility ID. This value describes the FLEX™ decoders to which this part is
backwards compatible. See table below for meaning and current value.
Notes: *1 Compatibility to FLEX Alphanumeric Decoder II is indicated by MDL set to 0, CID 0 set
REV: Revision. This identifies the revision and manufacturer of the FLEX™ decoder II. The
following table lists the currently available part ID’s of the FLEX™ decoder II family.
476
Bit
CID
CID
CID
0
1
2
*2 Compatibility to FLEX Roaming Decoder II is indicated by MDL set to 0, CID 1 set to 1,
Bit 7
1
MDL
CID
REV
Indicates this IC can be used in place of
FLEX Alphanumeric Decoder I*
FLEX Roaming Decoder I*
FLEX Numeric Decoder
Part ID Packet
to 1, and REV greater than or equal to 7.
and REV greater than or equal to 8.
7
1
7
Bit 6
1
MDL
CID
REV
6
0
6
Bit 5
1
CID
CID
REV
13
5
2
5
1
Bit 4
1
CID
CID
REV
4
12
4
Bit 3
1
CID
CID
REV
Value for FLEX Roaming Decoder II
1 (TRUE)
1 (TRUE)
0 (FALSE)
11
3
3
Bit 2
1
CID
CID
REV
10
2
2
Bit 1
1
CID
CID
REV
9
1
1
Bit 0
1
CID
CID
REV
8
0
0