Epson Research and Development
Page 17
Vancouver Design Center
Interfacing to the Motorola MPC821 Microprocessor
S1D13505
Issue Date: 01/02/05
X23A-G-008-05
Note
Note that the bit numbering of the Power PC bus signals is reversed. e.g. the most
significant address bit is A0, the next is A1, A2, etc.
D8
P12-A15
DB7
D9
P12-C15
DB6
D10
P12-D15
DB5
D11
P12-A14
DB4
D12
P12-B14
DB3
D13
P12-D14
DB2
D14
P12-B13
DB1
D15
P12-C13
DB0
SRESET
P9-D15
RESET#
SYSCLK
P9-C2
BUSCLK
CS4
P6-D13
CS#
TS
P6-B7
BS#
TA
P6-B6
WAIT#
R/W
P6-D8
RD/WR#
TSIZ0
P6-B18
RD#
TSIZ1
P6-C18
WE0#
BI
P6-B9
WE1#
Gnd
P12-A1, P12-B1, P12-A2, P12-B2,
P12-A3, P12-B3, P12-A4, P12-B4,
P12-A5, P12-B5, P12-A6, P12-B6,
P12-A7
Vss
Table 4-1: List of Connections from MPC821ADS to S1D13505 (Continued)
MPC821 Signal Name
MPC821ADS Connector and Pin Name
S1D13505 Signal Name