PT7A6632 Datasheet, PDF (22/61 Pages) Pericom Semiconductor Corporation – PT7A6632 32-Channel HDLC Controller

Data Sheet
PT7A6632 32-Channel HDLC Controller
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Figure 21b. Activation Memory Map Locations (MDFS = LOW)
b. MDFS = LOW (iAPX 86 Based)
(Address)
(HEX)
7
XX00 ^Active
XX01 _~~
XX7F
XX80
XX81
XX82
XX83
(Contents)
6
5
4
3
2
1
x Rx/Tx
Channel Number
Byte Addresses xx01 Through
xx7F Are Not Used by PT7A6632
Transmit Channel 0 Start Address (Low-Order Byte)
Transmit Channel 0 Start Address (High-Order Byte)
Transmit Channel 1 Start Address (Low-Order Byte)
Transmit Channel 1 Start Address (High-Order Byte)
~~
XXBE
XXBF
XXC0
XXC1
Transmit Channels 2 to 30 Start Addresses
Transmit Channel 31 Start Address (Low-Order Byte)
Transmit Channel 31 Start Address (High-Order Byte)
Receive Channel 0 Start Address (Low-Order Byte)
Receive Channel 0 Start Address (High-Order Byte)
~~
XXFE
XXFF
Receive Channels 1 to 30 Start Address
Receive Channel 31 Start Address (Low-Order Byte)
Receive Channel 31 Start Address (High-Order Byte)
0
Channel Activation Byte
~~
~~
Channel Buffer Pointers
~~
PT019(05/02)
22
Ver:2