28478G-18 Mindspeed Technologies, 28478G-18 Datasheet - Page 149

• Manufacturer Part Number: 28478G-18
• Description: Multichannel Synchronous Communications Controller 208-Pin BGA
• Manufacturer: Mindspeed Technologies

Specifications of 28478G-18

• Package: 208BGA
• Maximum Data Rate: 32768 Kbps
• Transmission Media Type: Wire
• Power Supply Type: Analog
• Typical Supply Current: 250 mA
• Typical Operating Supply Voltage: 3.3 V
• Minimum Operating Supply Voltage: 3 V
• Maximum Operating Supply Voltage: 3.6 V

Table 6-12.
Table 6-13.
6.4.7
Each channel group provides two separate Bit-Level Processors (BLP) to service the transmit and receive
directions separately. Also, each channel group provides two separate Direct Memory Access Controllers (DMAC)
to service the transmit and receive directions separately. The BLP and DMAC work in conjunction to transfer serial
data between the serial interface and shared memory. BLPs perform the required bit-level processing based on the
protocol mode assigned to the channel and direction.
28478-DSH-002-E
Channel
Number
(0–31)
31
0
1
x
Field
31:27
26:25
23:16
14:0
Bit
24
15
Memory Map for Message Configuration Descriptor Table
Message Configuration Descriptor
Address of Message Configuration Descriptor for a channel in a
06180h
06184h
061FCh
Bit-Level Operation
0
06180h + (Group_Number[0:3]•00800h) +
(Channel_Number[31:0]•00008h)
PADCNT[7:0]
Preliminary Information / Mindspeed Proprietary and Confidential
REPEAT
PADEN
Name
RSVD
RSVD
06980h
06984h
069FCh
IC
1
in Specific Group (0–3) (Byte offset from Base Address Register)
group
Mindspeed Technologies
07180h
07184h
071FCh
Location of Message Configuration Descriptor
2
Value
0
0
1
2
3
0
1
0
0
1
0
07980h
07984h
079FCh
3
Reserved.
Idle Code Select –7Eh (0111 1110b)
Idle Code Select –FFh (1111 1111b)
Idle Code Select –00h (0000 0000b)
Idle Code Select –Reserved.
Pad Fill Disabled. One shared opening/closing flag (7Eh) is
inserted before sending next message
Pad Fill Enabled. Also, see PADCNT bit field.
Pad Count. When PADEN = 1, PADCNT indicates the minimum
number of idle codes to be inserted between the closing flags
and the next opening flag (7Eh).
pattern 7Eh..FFh..FFh..7Eh
number of idle codes are inserted.
Repeat Message Transmission Disabled.
Repeat Message Transmission Enabled.
Reserved.
Address of Message Configuration Descriptor for a channel in a
If PADCNT = 2 and IC = 1, for example, yields the bit
There is no indication by MUSYCC if more than PADCNT
®
16180h
16184h
161FCh
4
16180h + (Group_Number[4:7]•00800h) +
(Channel_Number[31:0]•00008h)
16980h
16984h
169FCh
5
Description
group
17180h
17184h
171FCh
6
Basic Operation
17980h
17984h
179FCh
7
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