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S1D13705 Hardware Functional Specification
X27A-A-001-10 Issue Date: 02/02/01
7.1.5 Generic #1 Interface Timing

Figure 7-5: Generic #1 Timing

Note

BCLK may be turned off (held low) between accesses - see Section 13.5, “Turning Off

BCLK Between Accesses” on page 84

Table 7-5: Generic #1 Timing

Symbol Parameter Min Max Units
fBCLK Bus Clock frequency 50 MHz
TBCLK Bus Clock period 1/fBCLK MHz
t1 A[16:0], CS# valid to WE0#, WE1# low (write cycle) or RD0#, RD1#
low (read cycle) 0ns
t2 WE0#, WE1# high (write cycle) or RD0#, RD1# high (read cycle) to
A[16:0], CS# invalid 0ns
t3 WE0#, WE1# low to D[15:0] valid (write cycle) TBCLK
t4 RD0#, RD1# low to D[15:0] driven (read cycle) 17 ns
t5 WE0#, WE1# high to D[15:0] invalid (write cycle) 0 ns
t6 D[15:0] valid to WAIT# high (read cycle) 0 ns
t7 RD0#, RD1# high to D[15:0] high impedance (read cycle) 10 ns
t8 WE0#, WE1# low (write cycle) or RD0#, RD1# low (read cycle) to
WAIT# driven low 16 ns
t9 BCLK to WAIT# high 16 ns
t10 WE0#, WE1# high (write cycle) or RD0#, RD1# high (read cycle) to
WAIT# high impedance 16 ns
t11 WAIT# high to WE0#, WE1#, RD0#, RD1# high 1TBCLK
TBCLK
t8
t5
t9
t3
t1
t10
BCLK
A[16:0]
CS#
WE0#,WE1#
WAIT#
VALID
t2
Hi-Z
Hi-Z
Hi-Z
VALID
t6 t7
VALID
Hi-Z Hi-Z
D[15:0]
D[15:0]
t4
RD0#, RD1#
(write)
(read)
t11