saa7893hl-02 NXP Semiconductors, saa7893hl-02 Datasheet - Page 19

• Manufacturer Part Number: saa7893hl-02
• Description: Saa7893hl Super Audio Media Player
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 11:
[1]
[2]
9397 750 10925
Product data
Symbol
t
t
t
t
wt(en)
tri
set
h(D)
Fig 13. Host interface connection.
When the SAA7893HL SAD16 interface is programmed to generate always a H_WAIT signal of at least 7 sys_clk cycles, then it is no
longer required that the minimum time of t
of the H_WAIT signal. The host can deactivate the H_CS signal after the negative edge of the H_WAIT signal and when it has read the
data at the H_DQ lines. When a H_WAIT signal is always generated then the timing diagrams in
applicable.
When the SAA7893HL SAD16 interface is programmed to generate always a H_WAIT signal, the minimum time will be 2 sys_clk cycles
and the maximum time will be 3 sys_clk cycles.
Timing numbers of reading registers via PI-bus
Parameter
time from H_WAIT negative slope to data set-up
time that data bus is set from 3-state to output
time that data is valid before CS is set to logic 1
hold time from CS to H_data bus
8.2.5 Host interface connection
8.3 SAD16_03 mode
To save physical pins on the SAA7893HL, the data bus is used to write the 16 MSB
address bits, hereafter called ‘the base address’, into the SAA7893HL. Therefore, to
access an address inside the SAA7893HL first this 16 MSB bits of the address must
be written as a base address for the SAA7893HL indicated by the H_A_sel line.
Pin H_A_sel can be mapped to a physical address pin of the host device.
CPU_ADDR(15:0)
SAD16_01
CPU_ADDR(6:1)
CPU_PROCCLK
CPU_ADDR(7)
mode
tot
CPU_WAIT
is 14 sys_clk cycles. The data at the H_DQ output is always available at the negative edge
CPU_RW
IRQ_x
CE2n
Rev. 02 — 26 February 2003
15, 16, 22, 23, 25
GND_IO
GND_IO
GND_IO
2, 3, 5, 6, 7, 8, 9,
124, 125, 126,
11, 12, 13, 14,
Conditions
…continued
127, 128, 1
10
k
123
26
24
27
18
28
21
62
63
H_RWn
H_CSn
H_WAIT
H_A_sel
H_A[6:1]
H_DQ[15:0]
H_procclk
H_IRQn
sys_clk
H_sel[0]
H_sel[1]
SAA7893HL
MCE039
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
Figure 9
Min
-
1
30
0
Super audio media player
SAA7893HL
and
Typ
-
-
-
-
Figure 10
Max
0
3
-
-
are no longer
Unit
ns
sys_clk
ns
ns
19 of 66